Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-01-2025 14:06

General

  • Target

    JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe

  • Size

    1022KB

  • MD5

    6d2ca378dca854f53ab93733bc6a66e0

  • SHA1

    faea17001089803c8cb4d5d0d972e80884638986

  • SHA256

    4b0f1329d7c4bd996157b31609646bc42335155b01d4458da058ef836604768e

  • SHA512

    961ddc6c0a9f9a4f77a5a16feee9519ed19a070db69f2569d3d434dc42b15ac38b6949029eb206d6b4666311459f1a0658d436eed40181aeb092e09ce6d464dc

  • SSDEEP

    24576:XA6tUdbj3z+q2R2Xh9LBu6CDLYS1eXZO+NJqoyhZBERuOZ:XAOUdbjz+q2cXhLu68LZ1eJOGyJEss

Malware Config

Extracted

Family

darkcomet

Botnet

JAVAappDrBy

C2

yolofu.zapto.org:1604

Mutex

DC_MUTEX-7GD0C71

Attributes
  • InstallPath

    Java\JavawsJRE06.exe

  • gencode

    jVbPS4va9ElN

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    JavaUpdater

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
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.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
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2236
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4128
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2040
      • 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:3844
        • 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:692
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:908
      • C:\Users\Admin\AppData\Roaming\Java\JavawsJRE06.exe
        "C:\Users\Admin\AppData\Roaming\Java\JavawsJRE06.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1404
        • C:\Users\Admin\AppData\Roaming\Java\JavawsJRE06.exe
          "C:\Users\Admin\AppData\Roaming\Java\JavawsJRE06.exe"
          4⤵
          • Modifies firewall policy service
          • Modifies security service
          • Windows security bypass
          • Executes dropped EXE
          • Windows security modification
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe

    Filesize

    1022KB

    MD5

    6d2ca378dca854f53ab93733bc6a66e0

    SHA1

    faea17001089803c8cb4d5d0d972e80884638986

    SHA256

    4b0f1329d7c4bd996157b31609646bc42335155b01d4458da058ef836604768e

    SHA512

    961ddc6c0a9f9a4f77a5a16feee9519ed19a070db69f2569d3d434dc42b15ac38b6949029eb206d6b4666311459f1a0658d436eed40181aeb092e09ce6d464dc

  • C:\Users\Admin\AppData\Local\Temp\iwatbct

    Filesize

    6KB

    MD5

    cfa2d457ba7732041050688bbe654b82

    SHA1

    30dabbe4a737835662c3bb5fe460182167970841

    SHA256

    6e9abf64201189f769ebc4959ac077918332fb8aebf75961f657fd4d8992d320

    SHA512

    1d9f90bab00a748bd46e032b110e3a4647b9f8838c396acd9352246037a0ec5642fe782e3548433ebbab77603776b36a45d347d71225ca665013ca9982ca44ec

  • memory/908-20-0x0000000000CA0000-0x0000000000CA1000-memory.dmp

    Filesize

    4KB

  • memory/908-41-0x00000000003F0000-0x000000000041E000-memory.dmp

    Filesize

    184KB

  • memory/908-22-0x00000000003F0000-0x000000000041E000-memory.dmp

    Filesize

    184KB

  • memory/1396-14-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

  • memory/1396-8-0x0000000000A80000-0x0000000000A81000-memory.dmp

    Filesize

    4KB

  • memory/1396-0-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

  • memory/1404-49-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

  • memory/2236-15-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2236-16-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2236-12-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2236-9-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2236-32-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2236-11-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-51-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-58-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-52-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-50-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-53-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-54-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-55-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-56-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-57-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-47-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-59-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-60-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-61-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-62-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-63-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-64-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-65-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2856-66-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB