Analysis

  • max time kernel
    139s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/07/2024, 20:15

General

  • Target

    64a5ad1ffd99bcf6fa6432952ae24ca4_JaffaCakes118.exe

  • Size

    306KB

  • MD5

    64a5ad1ffd99bcf6fa6432952ae24ca4

  • SHA1

    f5eb9e1a261ec135905e52302a8701c90d5ba51d

  • SHA256

    3a8c1bb90d28ddbd9533ced5ddec204318b998de78493428e8391ff489daf622

  • SHA512

    08f0050db0dd906ad39ba4127f39c8d6399ebd7386efedd598d7bade3190abee16811794b7360d8d4401f24e3a934a68535bcd29301654d24c088c4186b5fcc3

  • SSDEEP

    6144:p7xtd6v1sY8BcxKt8AIMakwpxyPQAfme3vhzaBTnssgsA:p7xHYqY8Bcxvb01Vfme3MTK

Malware Config

Extracted

Family

darkcomet

Botnet

íãÏíß

C2

khdt1.zapto.org:5432

Mutex

DC_MUTEX-9Y1VFXW

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    wurFyAv8D8DZ

  • 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 1 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 1 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).

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\64a5ad1ffd99bcf6fa6432952ae24ca4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\64a5ad1ffd99bcf6fa6432952ae24ca4_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1452
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:244
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4444
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2376

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    306KB

    MD5

    64a5ad1ffd99bcf6fa6432952ae24ca4

    SHA1

    f5eb9e1a261ec135905e52302a8701c90d5ba51d

    SHA256

    3a8c1bb90d28ddbd9533ced5ddec204318b998de78493428e8391ff489daf622

    SHA512

    08f0050db0dd906ad39ba4127f39c8d6399ebd7386efedd598d7bade3190abee16811794b7360d8d4401f24e3a934a68535bcd29301654d24c088c4186b5fcc3

  • memory/1956-0-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/1956-1-0x00000000022A0000-0x00000000022A3000-memory.dmp

    Filesize

    12KB

  • memory/1956-2-0x00000000022F0000-0x00000000022F1000-memory.dmp

    Filesize

    4KB

  • memory/1956-70-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB

  • memory/1956-71-0x00000000022A0000-0x00000000022A3000-memory.dmp

    Filesize

    12KB

  • memory/4444-64-0x0000000002280000-0x0000000002283000-memory.dmp

    Filesize

    12KB

  • memory/4444-65-0x0000000002420000-0x0000000002421000-memory.dmp

    Filesize

    4KB

  • memory/4444-69-0x0000000002280000-0x0000000002283000-memory.dmp

    Filesize

    12KB

  • memory/4444-68-0x0000000000400000-0x00000000004D0000-memory.dmp

    Filesize

    832KB