Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 11:12

General

  • Target

    JaffaCakes118_64a9f6a45ed94db7d8dfefba95c41de0.exe

  • Size

    385KB

  • MD5

    64a9f6a45ed94db7d8dfefba95c41de0

  • SHA1

    c0d1cff470733f2020dcdf15b79c666ea8ddf9e0

  • SHA256

    0c4e9477ef7584816fd3b90d5ad8b3c8bc65bd5aa3fffe848b79f286257c4ac8

  • SHA512

    dccf91a636b1ffb3426436634d92115b1702b415dd52328ae2e4c210c86de82a0df592dfe8aa5fa002a16a6fb8544ec46d92976cc873e6b3f851e22152419991

  • SSDEEP

    6144:ycNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37RtGj1OhH4BKdy8gPX:ycW7KEZlPzCy37PYgHeUy8g

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

game.servehttp.com:1604

game.servehttp.com:1605

Mutex

DC_MUTEX-GDLX7NM

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    FgD3os4239TA

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

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
  • Disables RegEdit via registry modification 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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 10 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 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64a9f6a45ed94db7d8dfefba95c41de0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64a9f6a45ed94db7d8dfefba95c41de0.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4224
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64a9f6a45ed94db7d8dfefba95c41de0.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1964
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64a9f6a45ed94db7d8dfefba95c41de0.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:3896
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4716
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:1280
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2596
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4964
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

    Filesize

    385KB

    MD5

    64a9f6a45ed94db7d8dfefba95c41de0

    SHA1

    c0d1cff470733f2020dcdf15b79c666ea8ddf9e0

    SHA256

    0c4e9477ef7584816fd3b90d5ad8b3c8bc65bd5aa3fffe848b79f286257c4ac8

    SHA512

    dccf91a636b1ffb3426436634d92115b1702b415dd52328ae2e4c210c86de82a0df592dfe8aa5fa002a16a6fb8544ec46d92976cc873e6b3f851e22152419991

  • memory/2596-4-0x0000000001380000-0x0000000001381000-memory.dmp

    Filesize

    4KB

  • memory/2612-63-0x0000000001050000-0x0000000001051000-memory.dmp

    Filesize

    4KB

  • memory/4224-0-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4224-1-0x0000000000B00000-0x0000000000B01000-memory.dmp

    Filesize

    4KB

  • memory/4224-64-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4964-66-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4964-68-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4964-70-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4964-72-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4964-74-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4964-76-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB

  • memory/4964-78-0x0000000000400000-0x00000000004FA000-memory.dmp

    Filesize

    1000KB