Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-08-2024 07:53

General

  • Target

    7fb95a278a19e2e617103073ce277949_JaffaCakes118.exe

  • Size

    1.0MB

  • MD5

    7fb95a278a19e2e617103073ce277949

  • SHA1

    b35d3abe168e600e479fe4ee0a9bbd0d16896293

  • SHA256

    e10ceccfa2079cd2c7fbd113a12b2543089858353aa864120ac4fa4293a44c82

  • SHA512

    f3a7abb1041b9cb894e11d240e651e1874f4698a426f652afa82360065da05cbbed3e7910b8cd3a82bc38b35e6ce5a07b8cc110e7c3823816fc4e4104fb112b8

  • SSDEEP

    24576:FhXEizcghu+seL01pUbWm/FZk8KDdZprnIRWmAZfwv:z0rgw+s8k8KZ6DA1e

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

rat298.no-ip.biz:1604

Mutex

DC_MUTEX-0GZYHZ0

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    z8rgSbLtXLFl

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 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 8 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7fb95a278a19e2e617103073ce277949_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7fb95a278a19e2e617103073ce277949_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3420
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      C:\Users\Admin\AppData\Local\Temp\svchost.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1176
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3252
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\svchost.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1772
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2360
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:4620
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:808
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1288

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe

    Filesize

    34KB

    MD5

    e118330b4629b12368d91b9df6488be0

    SHA1

    ce90218c7e3b90df2a3409ec253048bb6472c2fd

    SHA256

    3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

    SHA512

    ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

  • memory/808-23-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

    Filesize

    4KB

  • memory/1176-17-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1176-81-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1176-19-0x00000000025C0000-0x00000000025C1000-memory.dmp

    Filesize

    4KB

  • memory/1176-7-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1176-10-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1176-15-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/3420-4-0x0000000075420000-0x00000000759D1000-memory.dmp

    Filesize

    5.7MB

  • memory/3420-18-0x0000000075420000-0x00000000759D1000-memory.dmp

    Filesize

    5.7MB

  • memory/3420-0-0x0000000075422000-0x0000000075423000-memory.dmp

    Filesize

    4KB

  • memory/3420-2-0x0000000075420000-0x00000000759D1000-memory.dmp

    Filesize

    5.7MB

  • memory/3420-1-0x0000000075420000-0x00000000759D1000-memory.dmp

    Filesize

    5.7MB