Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/10/2024, 08:15

General

  • Target

    46af882c1bc6f0f16c5b1f1a7aa13e6f_JaffaCakes118.exe

  • Size

    251KB

  • MD5

    46af882c1bc6f0f16c5b1f1a7aa13e6f

  • SHA1

    9553b760ae0fb2684d45fea3b6751d3397499223

  • SHA256

    d97f102ce229fe965177a624b359e620a26fd48d4da96dcc7f3205aaf9612e6c

  • SHA512

    7b94fb2e36f21492f3d0d41211d6bb97c29537576b91de48c172d5f8a40cabdf513031b9c7b6efc14f84a56449f14fe0e1a920597b74c20a6c07cf2fe1e3fba7

  • SSDEEP

    6144:7cNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37E:7cW7KEZlPzCy37

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

jasondi916.no-ip.biz:1604

Mutex

DC_MUTEX-5NX1AM1

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    4Vwdt4wCbKD7

  • 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
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • 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
  • Adds Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 21 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.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 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\46af882c1bc6f0f16c5b1f1a7aa13e6f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\46af882c1bc6f0f16c5b1f1a7aa13e6f_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1220
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\46af882c1bc6f0f16c5b1f1a7aa13e6f_JaffaCakes118.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3984
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\46af882c1bc6f0f16c5b1f1a7aa13e6f_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:3416
    • 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:3892
      • 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:1880
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1976
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
      2⤵
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • 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:2076
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1656

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

    Filesize

    251KB

    MD5

    46af882c1bc6f0f16c5b1f1a7aa13e6f

    SHA1

    9553b760ae0fb2684d45fea3b6751d3397499223

    SHA256

    d97f102ce229fe965177a624b359e620a26fd48d4da96dcc7f3205aaf9612e6c

    SHA512

    7b94fb2e36f21492f3d0d41211d6bb97c29537576b91de48c172d5f8a40cabdf513031b9c7b6efc14f84a56449f14fe0e1a920597b74c20a6c07cf2fe1e3fba7

  • memory/1220-1-0x0000000000AB0000-0x0000000000AB1000-memory.dmp

    Filesize

    4KB

  • memory/1220-0-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1220-20-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1656-17-0x0000000001290000-0x0000000001291000-memory.dmp

    Filesize

    4KB

  • memory/1976-5-0x00000000004A0000-0x00000000004A1000-memory.dmp

    Filesize

    4KB

  • memory/2076-26-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-29-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-22-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-23-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-24-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-25-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-16-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-27-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-28-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-18-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-30-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-31-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-32-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-33-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-34-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-35-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-36-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2076-37-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB