General

  • Target

    ProgramData.7z

  • Size

    18.1MB

  • Sample

    240705-vyfr7avcmg

  • MD5

    dc65afefc3993dc92b4d314af09f9a6f

  • SHA1

    7014f558d82d38735077f371a39fb31202293ebc

  • SHA256

    8221954f5351f4ea3de7cb800e280be493201c6fa8f3edc8e36ab5d2fd78e432

  • SHA512

    8cb13e2b21970ccb4eb30535dd3e175e15036930125c7904d52da655678e520e14be2c3bbb7b43a8bbc06d70c102c093b9871abdfd81883061c9b3ceaab59626

  • SSDEEP

    393216:Eg89Jur+0WoXfapGmkHsPlow5Ys4lK38pjJCMvvPunp2Nm4N/sOb+:EgAuZVfapf9C/rCY2p2NdG

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/sendDocument?chat_id=-1002245526003&caption=%F0%9F%93%82%20-%20Browser%20data%0A%E2%94%9C%E2%94%80%E2%94%80%20%F0%9F%93%82%20-%20cookies(0%20kb

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/sendMessage?chat_id=-1002245526003

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/getUpdates?offset=-

https://api.telegram.org/bot7258239318:AAE_J6DhWLSRk9YOV8l1ienRdy5HsJZuR6I/sendDocument?chat_id=-1002245526003&caption=%F0%9F%93%B8Screenshot%20take

Targets

    • Target

      main.exe

    • Size

      5.6MB

    • MD5

      3d3c49dd5d13a242b436e0a065cd6837

    • SHA1

      e38a773ffa08452c449ca5a880d89cfad24b6f1b

    • SHA256

      e0338c845a876d585eceb084311e84f3becd6fa6f0851567ba2c5f00eeaf4ecf

    • SHA512

      dd0e590310392b0543d47a2d24d55f6f091ba59acc0d7ea533039ffb48f1b8938587889bcfa19b0538a62ba26fcde2172253860ceab34af40fd7bf65b6587b00

    • SSDEEP

      98304:nsl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6UcR6s:nPOuK6mn9NzgMoYkSIvUcwti7TQlvciY

    • Gurcu, WhiteSnake

      Gurcu is a malware stealer written in C#.

    • MilleniumRat

      MilleniumRat is a remote access trojan written in C#.

    • Event Triggered Execution: Image File Execution Options Injection

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Target

      setup.exe

    • Size

      5.4MB

    • MD5

      1274cbcd6329098f79a3be6d76ab8b97

    • SHA1

      53c870d62dcd6154052445dc03888cdc6cffd370

    • SHA256

      bbe5544c408a6eb95dd9980c61a63c4ebc8ccbeecade4de4fae8332361e27278

    • SHA512

      a0febbd4915791d3c32531fb3cf177ee288dd80ce1c8a1e71fa9ad59a4ebddeef69b6be7f3d19e687b96dc59c8a8fa80afff8378a71431c3133f361b28e0d967

    • SSDEEP

      98304:Dei3W2HJn8hqIOLmRLRSo+QqvCRs19A3JIkLJQrAtjRQii7yXdmMpy2N:6Z2i4OcxQECE6ZIkLJIAt8y4

    Score
    10/10
    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • Target

      svchost.exe

    • Size

      12.0MB

    • MD5

      48b277a9ac4e729f9262dd9f7055c422

    • SHA1

      d7e8a3fa664e863243c967520897e692e67c5725

    • SHA256

      5c832eda59809a4f51dc779bb00bd964aad42f2597a1c9f935cfb37f0888ef17

    • SHA512

      66dd4d1a82103cd90c113df21eb693a2bffde2cde41f9f40b5b85368d5a920b66c3bc5cadaf9f9d74dfd0f499086bedd477f593184a7f755b7b210ef5e428941

    • SSDEEP

      196608:HWweM4sJFPpGAjMGhuPD5U4iDfyGgVwBdnpkYRMoSENsS3Mcj0kilsl:0SP8AxYDMDfDgVc6J4pMcj9Wsl

    • Contacts a large (3137) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Loads dropped DLL

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks