Cheerscrypt 랜섬웨어 탐지: 중국 배후 해커, Emperor Dragonfly 또는 Bronze Starlight, 지속적인 사이버 공격의 배후에 있다

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Veronika Telychko

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10월 05, 2022 · 3 분 읽기

Cheerscrypt 랜섬웨어 탐지: 중국 배후 해커, Emperor Dragonfly 또는 Bronze Starlight, 지속적인 사이버 공격의 배후에 있다

사이버 보안 연구원들은 최근 Cheerscrypt Linux 기반 랜섬웨어를 새롭게 발견했습니다. 랜섬웨어 변종의 전달은 Emperor Dragonfly로 추적되는 중국 후원 그룹 Bronze Starlight과 관련이 있습니다. 이 해킹 집단은 과거 사이버 공격에서도 암호화된 Cobalt Strike 비콘을 VMware Horizon 서버에 초기 접근을 얻은 후 악명 높은 Log4Shell 취약점을.

Emperor Dragonfly가 확산한 Cheerscrypt 랜섬웨어 및 Cobalt Strike 비콘 악성코드 변종 탐지

Emperor Dragonfly 해커의 공격 능력에 맞서 조직을 돕기 위해, SOC Prime의 플랫폼은 최근 편집된 Sigma 규칙 세트를 출시했습니다. 이 Sigma 규칙은 우리 위협 현상금 프로그램 개발자인 Zaw Min Htun (ZETA)와 and Chayanin이 작성한 것으로, 업계 최고 SIEM, EDR, XDR 플랫폼과 호환되며 MITRE ATT&CK® 프레임워크에매핑되어 있습니다.

Zaw Min Htun (ZETA)이 작성한 탐지 알고리즘은 Initial Access와 Execution 전술을 대응하며, Exploit Public-Facing Application (T1190) 및 System Services (T1569) ATT&CK 기술과 관련되고, Chayanin의 DLL 사이드 로딩 탐지를 위한 Sigma 규칙은 Defense Evasion 전술 레퍼토리의 Hijack Execution Flow (T1574) 기술을 대응합니다.

아래의 탐지 탐색 버튼을 클릭하여 중국 후원 배우 Emperor Dragonfly의 적대적 행동과 관련된 Sigma 규칙에 즉시 도달하고 포괄적인 사이버 위협 맥락을 탐색하세요.

탐지 탐색

Emperor Dragonfly 공격 분석: 중국 해커의 최신 악성 캠페인의 배후

중국 후원 APT 그룹은 현재 다양한 사이버 스파이 활동에 참여하고 있습니다. 2022년 초, Bronze Starlight로도 알려진 Emperor Dragonfly 또는 DEV-0401가 ShadowPad 백도어분배의 배후에 있었습니다. 이후 중국과 연계된 그룹은 최신 악성 캠페인에서도 새로 발견된 Cheerscrypt Linux 기반 랜섬웨어를 확산하는 것으로 나타났습니다. Cheerscrypt는 이전에 중국 위협 행위자들이 사용한 다양한 랜섬웨어 패밀리, 예를 들어 Atom Silo and LockBit 2.0매핑되어 있습니다.

와 같은 최신 추가 사항입니다. Sygnia 보고서에 따르면

업계 전문가들이 Cheerscrypt를 배포하는 최근의 적대적 캠페인을 공개했으며 이를 Night Sky로 알려진 중국 후원 위협 행위자들과 연결했습니다. 연구원들은 Cheerscrypt와 Night Sky가 Emperor Dragonfly로 추적되는 동일한 중국 연계 그룹의 재브랜드일 가능성이 있다고 제안합니다. Trend Micro의 보고서

는 VMware ESXi 서버를 타겟으로 하는 이 랜섬웨어 변형과 유출된 Babuk 소스 코드와 관련이 있는 Cheerscrypt를 처음으로 조명했습니다. CVE-2021-44228 (소위 Log4Shell)로 추적된 Apache Log4j의 치명적인 RCE 제로데이를 악용하여, Emperor Dragonfly 랜섬웨어 운영자들은 2022년 1월로 거슬러 올라가는 이전 캠페인에서도 암호화된 Cobalt Strike 비콘 배포에 참여했습니다. 이 캠페인에서 위협 행위자들은 PowerShell을 적용하여 감염을 확산시키고 Cobalt Strike 비콘 배포로 이어졌습니다. Cheerscrypt의 배포는 초기 접근 벡터, 측면 움직임 접근 방법, DLL 사이드 로딩을 통한 Cobalt Strike 비콘 전달을 포함하여 관찰된 적대적 TTP의 유사성을 기반으로 Emperor Dragonfly에 기인할 수 있습니다.

Emperor Dragonfly가 다른 랜섬웨어 운영자와 차별화되는 점은 전체 악성 캠페인을 스스로 수행하고 페이로드를 재브랜드하는 경향이 있다는 것입니다. 이는 사이버 수비수들에게 심각한 위협을 제기하며 탐지를 회피할 수 있게 합니다.

The SOC Prime 위협 현상금 프로그램 은 업계의 동료들이 공격 능력을 능가할 수 있도록 돕기 위해 전 세계의 열망하는 위협 연구원들을 연결합니다. Sigma 규칙을 작성하여 우리의 크라우드소싱 이니셔티브에 참여하고, 그것을 전 세계와 공유하며 기여도에 대한 보상을 받으세요.

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동료들과 좋아요를 누르고 공유하세요.

SOC Prime의 Detection as Code 플랫폼에 가입하세요 귀하의 비즈니스와 가장 관련 있는 위협에 대한 가시성을 향상시키세요. 시작하고 즉각적인 가치를 창출하기 위해 지금 SOC Prime 전문가와의 미팅을 예약하세요.

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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.
c	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.
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.

Cheerscrypt 랜섬웨어 탐지: 중국 배후 해커, Emperor Dragonfly 또는 Bronze Starlight, 지속적인 사이버 공격의 배후에 있다

Emperor Dragonfly가 확산한 Cheerscrypt 랜섬웨어 및 Cobalt Strike 비콘 악성코드 변종 탐지

Emperor Dragonfly 공격 분석: 중국 해커의 최신 악성 캠페인의 배후

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사이버 방어를 강화하세요 위협 탐지 마켓플레이스

Cheerscrypt 랜섬웨어 탐지: 중국 배후 해커, Emperor Dragonfly 또는 Bronze Starlight, 지속적인 사이버 공격의 배후에 있다

Emperor Dragonfly가 확산한 Cheerscrypt 랜섬웨어 및 Cobalt Strike 비콘 악성코드 변종 탐지

Emperor Dragonfly 공격 분석: 중국 해커의 최신 악성 캠페인의 배후

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