Analysis

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

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2024 15:40

General

  • Target

    be120e8100e8c055cb064f11c520dac4_JaffaCakes118.exe

  • Size

    681KB

  • MD5

    be120e8100e8c055cb064f11c520dac4

  • SHA1

    86f20ff0700aed633b8395a907033412c744146e

  • SHA256

    d8fb1d97c11512623a7a031706af0db394d45043d9f1130153ad7fb7b4295dbb

  • SHA512

    0668d35a1f96b49c7fe1188794dc84909b8a796adec28286073c4c8e8b978c965275903348614c4318727f0211e44feec3bb031bfd04ee6342ae81305582edc8

  • SSDEEP

    12288:69HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hO:2Z1xuVVjfFoynPaVBUR8f+kN10EBA

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

amanj.no-ip.biz:1604

amanjhawlere.no-ip.biz:1604

Mutex

DC_MUTEX-N3GNXE8

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    7yDEHkqf9CLX

  • 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 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 3 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 7 IoCs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\be120e8100e8c055cb064f11c520dac4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\be120e8100e8c055cb064f11c520dac4_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2288
    • 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:2732
      • 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:2576
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2748
    • 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
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2568
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry 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
        PID:2768
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    681KB

    MD5

    be120e8100e8c055cb064f11c520dac4

    SHA1

    86f20ff0700aed633b8395a907033412c744146e

    SHA256

    d8fb1d97c11512623a7a031706af0db394d45043d9f1130153ad7fb7b4295dbb

    SHA512

    0668d35a1f96b49c7fe1188794dc84909b8a796adec28286073c4c8e8b978c965275903348614c4318727f0211e44feec3bb031bfd04ee6342ae81305582edc8

  • memory/2288-0-0x0000000000270000-0x0000000000271000-memory.dmp

    Filesize

    4KB

  • memory/2288-73-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2568-33-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2608-72-0x0000000000030000-0x0000000000031000-memory.dmp

    Filesize

    4KB

  • memory/2748-22-0x00000000001D0000-0x00000000001D1000-memory.dmp

    Filesize

    4KB

  • memory/2748-3-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2768-32-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB