Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2024 19:50

General

  • Target

    b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe

  • Size

    713KB

  • MD5

    b9e35c88cd9ad3d9ab974984da9c46a3

  • SHA1

    673de3456726901eef20fa19c98f08f0c50e35d4

  • SHA256

    e1d10981abcaacfe456b45c752433ab5494df4544dbfa4ed85623ebdecde7bc4

  • SHA512

    d48324a72109333b53c66813fce02a3b6c49ecacd5865088d6051353eb1e53a22d64e56e1532c3791e0e4670b4e572b7a0b67fb331543a03b4d08cb023e39900

  • SSDEEP

    12288:gaAchpWsuVtDnBsBDJIcynnC90levX4CuYf2D82T3s99+VHuNKD:RAEE3uBDhynCylQgi63O9+VuNy

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Windows security bypass 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b9e35c88cd9ad3d9ab974984da9c46a3_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4332
    • C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      2⤵
      • Modifies firewall policy service
      • Windows security bypass
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Windows security modification
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:4464

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windupdt\winupdate.exe

    Filesize

    713KB

    MD5

    b9e35c88cd9ad3d9ab974984da9c46a3

    SHA1

    673de3456726901eef20fa19c98f08f0c50e35d4

    SHA256

    e1d10981abcaacfe456b45c752433ab5494df4544dbfa4ed85623ebdecde7bc4

    SHA512

    d48324a72109333b53c66813fce02a3b6c49ecacd5865088d6051353eb1e53a22d64e56e1532c3791e0e4670b4e572b7a0b67fb331543a03b4d08cb023e39900

  • memory/4332-0-0x0000000002830000-0x0000000002831000-memory.dmp

    Filesize

    4KB

  • memory/4332-35-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-41-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-43-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-38-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-39-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-40-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-36-0x00000000021B0000-0x00000000021B1000-memory.dmp

    Filesize

    4KB

  • memory/4464-42-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-37-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-44-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-45-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-46-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-47-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-48-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-49-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/4464-50-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB