UAC-0050 활동 감지: 해커가 원격 유틸리티를 사용하여 우크라이나 SSSCIP 및 국가 비상 서비스 위장

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Veronika Telychko

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1월 22, 2024 · 2 분 읽기

UAC-0050 활동 감지: 해커가 원격 유틸리티를 사용하여 우크라이나 SSSCIP 및 국가 비상 서비스 위장

UAC-0050 그룹이 우크라이나를 공격한 지 약 일주일 조금 지난 후 Remcos RAT, Quasar RAT, Remote Utilities를 활용하여적들은 사이버 위협 무대에 다시 등장했습니다. CERT-UA는 최근 국방자들에게 그룹의 캠페인이 대량 이메일 배포와 우크라이나의 특별 통신 및 정보 보호 서비스(SSSCIP) 및 우크라이나 긴급 서비스로 가장하는 발신자와 관련이 있음을 알렸습니다.

UAC-0050 피싱 공격 설명: Remote Utilities를 사용한 우크라이나에 대한 새로운 공격 활동

2024년 1월 22일 CERT-UA 팀은 다시 한번 사이버 방어자들의 주의를 끌었습니다. 그들은 UAC-0050 위협 행위자의 증가하는 활동을 강조했습니다. 새로운 보안 경고는 SSSCIP 및 우크라이나 긴급 서비스를 사칭하는 피싱 이메일의 대량 배포를 강조합니다. 확인된 피싱 이메일에는 ‘바이러스 제거’ 또는 ‘대피’와 같은 낚시 주제가 포함되어 있으며 RAR 아카이브와 Bitbucket 웹 서비스 링크가 포함되어 있습니다.

위 언급된 파일 중 하나가 열리면 Bitbucket에서 다운로드한 파일을 포함해 MSI 설치 프로그램이 시작됩니다. 후자는 Remote Utilities 원격 제어 프로그램을 감염된 시스템에 설치합니다. 특히 소프트웨어 구성 파일에는 적대적 C2 서버의 15개 다른 IP 주소가 포함되어 있습니다.

Bitbucket 통계에 따르면 악성 파일은 이미 3,000회 이상 다운로드되었습니다. 그러나 긴급 사이버보안 조치 덕분에 방어자들이 공격을 저지했기 때문에 성공적으로 감염된 컴퓨터의 수는 수십대에 이를 수 있습니다.

CERT-UA#8654 경고에 포함된 UAC-0050 피싱 공격 감지

UAC-0050 그룹으로 인한 우크라이나에 대한 공격 작업이 지속적으로 증가함에 따라 방어자들은 이러한 공격을 예방하기 위해 더욱 정교한 조치를 모색하고 있습니다. SOC Prime의 업계 최초의 집합적 사이버 방어 플랫폼은 UAC-0050 활동과 연결된 적대적 운영을 포함한 새로 떠오르는 사이버 위협에 대한 미래 지향적이고 공급업체에 구애받지 않는 탐지 알고리즘으로 보안 팀을 장비합니다. 아래 링크를 따라 로그인하여 경고 ID와 일치하는 ‘CERT-UA#8654’ 태그로 필터링된 관련 배포 준비가 된 Sigma 규칙 목록에 액세스하십시오:

CERT-UA#8654 경고에서 언급된 UAC-0050 공격 탐지를 위한 Sigma 규칙

UAC-0050 해커와 관련된 기존 및 새로 등장한 위협에 대한 방어를 강화하려면 SOC Prime 플랫폼에서 제공되는 관련 탐지 알고리즘 전체 컬렉션을 활용할 가치가 있습니다. 다음을 눌러 탐지 탐색 이 Sigma 규칙을 MITRE ATT&CK®과 정밀한 CTI로 풍부해지고, 여러 보안 분석 플랫폼의 언어 형식으로 자동 변환할 수 있습니다.

탐지 탐색

Uncoder IO는 보안 엔지니어가 IOCs를 원활하게 탐색하도록 합니다. CERT-UA에서 제공한 위협 인텔을 사용 중인 SIEM 또는 EDR 환경에 맞춘 맞춤형 검색 쿼리로 자동 변환하여 UAC-0050 악의적 활동과 연결된 위협 인텔을 제공함으로써.

MITRE ATT&CK 컨텍스트

MITRE ATT&CK을 활용하면 UAC-0050과 관련된 최신 공격 캠페인의 문맥에 대한 자세한 통찰력을 얻을 수 있습니다. 아래 표에서 ATT&CK 전술, 기술 및 하위 기술과 관련된 전용 Sigma 규칙의 포괄적인 세트를 볼 수 있습니다.

Tactics	Techniques	Sigma Rule
Initial Access	Phishing: Spearphishing Attachment (T1566.001)	Suspicious Archive in Archive Execution (via process_creation)
		Execution from RAR Archive [WinRAR] (via process_creation)
		Execution from Zip (via process_creation)
Execution	Exploitation for Client Execution (T1203)	Suspicious Archive in Archive Execution (via process_creation)
	Exploitation for Client Execution (T1203)	Execution from RAR Archive [WinRAR] (via process_creation)
	User Execution: Malicious File (T1204.002)	Possible Self-Extracting Archive was Executed (via file_event)
	User Execution: Malicious File (T1204.002)	Possible 7Zip Self-Extracting Archive was Executed (via cmdline)
	Software Deployment Tools (T1072)	Alternative Remote Access Software (via system)
		Alternative Remote Access Software (via audit)
		Alternative Remote Access Software (via process_creation)
Defense Evasion	Obfuscated Files or Information (T1027)	Possible Self-Extracting Archive was Executed (via file_event)
Lateral Movement	Remote Services (T1021)	Possible Remote Utilities RMM Remote Command and Scripts Execution (via cmdline)
Command and Control	Remote Access Software (T1219)	Alternative Remote Access Software (via system)
		Alternative Remote Access Software (via audit)
		Alternative Remote Access Software (via process_creation)
		Possible Remote Utilities RMM Remote Command and Scripts Execution (via cmdline)
		Possible Command and Control Activity by Remote Access Software Domain Communication Attempt (via dns)

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Name	Descripiton
PHPSESSID	Preserves user session state across page requests. Cookie generated by applications based on the PHP language. This is a general purpose identifier used to maintain user session variables. It is normally a random generated number, how it is used can be specific to the site, but a good example is maintaining a logged-in status for a user between pages.
sp_i	Used to store information about authenticated User.
sp_r	Used to store information about authenticated User.
sp_a	Used to store information about authenticated User.

Name	Descripiton
tuuid	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
tuuid_last_update	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
um	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
umeh	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
na_sc_x	Used by the social sharing platform AddThis to keep a record of parts of the site that has been visited in order to recommend other parts of the site.
APID	Collects anonymous data related to the user's visits to the website.
IDSYNC	Collects anonymous data related to the user's visits to the website.
_cc_aud	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
_cc_cc	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
_cc_dc	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
_cc_id	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
dpm	Via a unique ID that is used for semantic content analysis, the user's navigation on the website is registered and linked to offline data from surveys and similar registrations to display targeted ads.
acs	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded, with the purpose of displaying targeted ads.
clid	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded, with the purpose of displaying targeted ads.
KRTBCOOKIE_#	Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.
PUBMDCID	Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.
PugT	Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.
ssi	Registers a unique ID that identifies a returning user's device. The ID is used for targeted ads.
_tmid	Registers a unique ID that identifies the user's device upon return visits. The ID is used to target ads in video clips.
wam-sync	Used by the advertising platform Weborama to determine the visitor's interests based on pages visits, content clicked and other actions on the website.
wui	Used by the advertising platform Weborama to determine the visitor's interests based on pages visits, content clicked and other actions on the website.
AFFICHE_W	Used by the advertising platform Weborama to determine the visitor's interests based on pages visits, content clicked and other actions on the website.
B	Collects anonymous data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The registered data is used to categorise the users' interest and demographical profiles with the purpose of customising the website content depending on the visitor.
1P_JAR	These cookies are used to gather website statistics, and track conversion rates.
APISID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
HSID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
NID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
SAPISID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
SID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
SIDCC	Security cookie to protect users data from unauthorised access.
SSID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
__utmx	This cookie is associated with Google Website Optimizer, a tool designed to help site owners improve their wbesites. It is used to distinguish between two varaitions a webpage that might be shown to a visitor as part of an A/B split test. This helps site owners to detemine which version of a page performs better, and therefore helps to improve the website.
__utmxx	This cookie is associated with Google Website Optimizer, a tool designed to help site owners improve their wbesites. It is used to distinguish between two varaitions a webpage that might be shown to a visitor as part of an A/B split test. This helps site owners to detemine which version of a page performs better, and therefore helps to improve the website.

Name	Descripiton
_hjid	Hotjar cookie. This cookie is set when the customer first lands on a page with the Hotjar script. It is used to persist the random user ID, unique to that site on the browser. This ensures that behavior in subsequent visits to the same site will be attributed to the same user ID.
_hjIncludedInSample	This cookie is associated with web analytics functionality and services from Hot Jar, a Malta based company. It uniquely identifies a visitor during a single browser session and indicates they are included in an audience sample.
intercom-id-[xxx]	This cookie is used by Intercom as a session so that users can continue a chat as they move through the site.
intercom-session-[xxx]	Used to keeping track of sessions and remember logins and conversations.
demdex	Via a unique ID that is used for semantic content analysis, the user's navigation on the website is registered and linked to offline data from surveys and similar registrations to display targeted ads.
CookieConsent	Stores the user's cookie consent state for the current domain.
__cfduid	Used by the content network, Cloudflare, to identify trusted web traffic.
ss	These cookies enable the website to provide enhanced functionality and personalisation . They may be set by us or by third party providers whose services we have added to our pages. These services may include the Live Chat facility, Contact Us form(s), the Product Quotation forms and submission process, and the Email Newsletter sign up functionality .

Name	Descripiton
_ga	This cookie name is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page. Registers a unique ID that is used to generate statistical data on how the visitor uses the website. request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.
_gat	Used by Google Analytics to throttle request rate. This cookie name is associated with Google Universal Analytics, according to documentation it is used to throttle the request rate - limiting the collection of data on high traffic sites. It expires after 10 minutes.
_gid	This cookie name is asssociated with Google Universal Analytics. This appears to be a new cookie and as of Spring 2017 no information is available from Google. It appears to store and update a unique value for each page visited. Registers a unique ID that is used to generate statistical data on how the visitor uses the website.
IDE	Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.
r/collect	Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.
test_cookie	Used to check if the user's browser supports cookies.
collect	Used to send data to Google Analytics about the visitor's device and behaviour. Tracks the visitor across devices and marketing channels.
ads/user-lists/#	These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites.
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khaos	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
put_#	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
rpb	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
rpx	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
tap.php	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.

UAC-0050 활동 감지: 해커가 원격 유틸리티를 사용하여 우크라이나 SSSCIP 및 국가 비상 서비스 위장

UAC-0050 피싱 공격 설명: Remote Utilities를 사용한 우크라이나에 대한 새로운 공격 활동

CERT-UA#8654 경고에 포함된 UAC-0050 피싱 공격 감지

MITRE ATT&CK 컨텍스트

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관련 게시물

사이버 방어를 강화하세요위협 탐지 마켓플레이스

UAC-0050 활동 감지: 해커가 원격 유틸리티를 사용하여 우크라이나 SSSCIP 및 국가 비상 서비스 위장

UAC-0050 피싱 공격 설명: Remote Utilities를 사용한 우크라이나에 대한 새로운 공격 활동

CERT-UA#8654 경고에 포함된 UAC-0050 피싱 공격 감지

MITRE ATT&CK 컨텍스트

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사이버 방어를 강화하세요위협 탐지 마켓플레이스

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