Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 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 5 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 46 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 62 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⤵
    • Loads dropped DLL
    • 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:2676
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6d2ca378dca854f53ab93733bc6a66e0.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2560
      • 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:2856
        • 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:2592
      • 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:2996
        • 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:2636
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:2600
      • C:\Users\Admin\AppData\Roaming\Java\JavawsJRE06.exe
        "C:\Users\Admin\AppData\Roaming\Java\JavawsJRE06.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • 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:2588
        • 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:2288

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    6KB

    MD5

    cfa2d457ba7732041050688bbe654b82

    SHA1

    30dabbe4a737835662c3bb5fe460182167970841

    SHA256

    6e9abf64201189f769ebc4959ac077918332fb8aebf75961f657fd4d8992d320

    SHA512

    1d9f90bab00a748bd46e032b110e3a4647b9f8838c396acd9352246037a0ec5642fe782e3548433ebbab77603776b36a45d347d71225ca665013ca9982ca44ec

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

    Filesize

    1022KB

    MD5

    6d2ca378dca854f53ab93733bc6a66e0

    SHA1

    faea17001089803c8cb4d5d0d972e80884638986

    SHA256

    4b0f1329d7c4bd996157b31609646bc42335155b01d4458da058ef836604768e

    SHA512

    961ddc6c0a9f9a4f77a5a16feee9519ed19a070db69f2569d3d434dc42b15ac38b6949029eb206d6b4666311459f1a0658d436eed40181aeb092e09ce6d464dc

  • memory/2560-32-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-16-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-10-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-65-0x0000000003A40000-0x0000000003B01000-memory.dmp

    Filesize

    772KB

  • memory/2560-28-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-31-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-26-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-24-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-22-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-20-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-18-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-13-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-14-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-67-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2560-33-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/2588-102-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

  • memory/2600-37-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2600-61-0x0000000000170000-0x0000000000171000-memory.dmp

    Filesize

    4KB

  • memory/2676-0-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

  • memory/2676-30-0x0000000000400000-0x00000000004C1000-memory.dmp

    Filesize

    772KB

  • memory/2676-8-0x0000000000260000-0x0000000000261000-memory.dmp

    Filesize

    4KB