Analysis

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

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-10-2024 22:21

General

  • Target

    7aea190b92c70f343710ae3c35ec0e8e_JaffaCakes118.exe

  • Size

    305KB

  • MD5

    7aea190b92c70f343710ae3c35ec0e8e

  • SHA1

    650813bdc0da6705e4bcb1d23086359006448520

  • SHA256

    cb7f71a83062cda857227953540a5e1746ee83738f818cba61a8528b09b80dd0

  • SHA512

    d8054328bf93a637da4d7191702284607e745093d4b2c0d1373b98ce280eac9a9437c0710d5aa0913b714d2f9ef245cec751dde923d04a030f12c83e2f03cbce

  • SSDEEP

    6144:1hMw9ZXp+CsZY0Rsu9sOTBAOxturMor+dWyx7jEPerbIdpYYBntFsodXJ:1T92CsZVsul1FxtonS9xC/51

Malware Config

Extracted

Family

darkcomet

Botnet

Favoris sil

C2

zapto666.zapto.org:111

Mutex

DC_MUTEX-BMLGN0C

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    K6Q9xEzsyCy3

  • install

    true

  • offline_keylogger

    false

  • 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
  • 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 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 31 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 10 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 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7aea190b92c70f343710ae3c35ec0e8e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7aea190b92c70f343710ae3c35ec0e8e_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2952
    • C:\Users\Admin\AppData\Local\Temp\7aea190b92c70f343710ae3c35ec0e8e_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\7aea190b92c70f343710ae3c35ec0e8e_JaffaCakes118.exe"
      2⤵
      • 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:3652
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\7aea190b92c70f343710ae3c35ec0e8e_JaffaCakes118.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\7aea190b92c70f343710ae3c35ec0e8e_JaffaCakes118.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1744
      • 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:4912
        • 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:3624
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:4684
      • C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3876
        • C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe
          "C:\Users\Admin\Favorites\MSDCSC\msdcsc.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3460
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:3004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    305KB

    MD5

    7aea190b92c70f343710ae3c35ec0e8e

    SHA1

    650813bdc0da6705e4bcb1d23086359006448520

    SHA256

    cb7f71a83062cda857227953540a5e1746ee83738f818cba61a8528b09b80dd0

    SHA512

    d8054328bf93a637da4d7191702284607e745093d4b2c0d1373b98ce280eac9a9437c0710d5aa0913b714d2f9ef245cec751dde923d04a030f12c83e2f03cbce

  • memory/2952-0-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2952-7-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/3004-62-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

    Filesize

    4KB

  • memory/3460-71-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-65-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-79-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-78-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-77-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-76-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-75-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-57-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-56-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-74-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-60-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-63-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-73-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-61-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-66-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-72-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-67-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-68-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-69-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3460-70-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3652-3-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3652-9-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3652-5-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3652-53-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3652-8-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3652-11-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3652-10-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3876-59-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/4684-14-0x00000000006D0000-0x00000000006D1000-memory.dmp

    Filesize

    4KB