Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-07-2024 13:45

General

  • Target

    4a152e4035f9c9e98a81519881394cfa_JaffaCakes118.exe

  • Size

    253KB

  • MD5

    4a152e4035f9c9e98a81519881394cfa

  • SHA1

    3dd73c4fcde3b7dc477d1c99835032f7a732681b

  • SHA256

    726f0333e1ef67ca0f9bf1ca37f63b0cdd1f4112241c7a208bca73de5462f6ba

  • SHA512

    e764ce719989812948a53459c0f61ed73fd597faa8ad04cafe247894a451c1bce8b70f265ac1e3ecfff8387f44b1a76d06caaef2d691f565dd56c8a55df7264b

  • SSDEEP

    6144:WD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZ:Wl8E4w5huat7UovONzbXw

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

vzlomzokrk.ddns.net:1604

vzlomzokrk.ddns.net:27015

vzlomzokrk.ddns.net:27016

Mutex

DC_MUTEX-J0D6D42

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    nHTAViDmi43W

  • install

    true

  • offline_keylogger

    false

  • persistence

    false

  • 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
  • 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
  • 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.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 19 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 3 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a152e4035f9c9e98a81519881394cfa_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4a152e4035f9c9e98a81519881394cfa_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3300
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\4a152e4035f9c9e98a81519881394cfa_JaffaCakes118.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4520
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\4a152e4035f9c9e98a81519881394cfa_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4736
    • 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:588
      • 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:3948
    • C:\Windows\MSDCSC\msdcsc.exe
      "C:\Windows\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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1672
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3480

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\MSDCSC\msdcsc.exe

    Filesize

    253KB

    MD5

    4a152e4035f9c9e98a81519881394cfa

    SHA1

    3dd73c4fcde3b7dc477d1c99835032f7a732681b

    SHA256

    726f0333e1ef67ca0f9bf1ca37f63b0cdd1f4112241c7a208bca73de5462f6ba

    SHA512

    e764ce719989812948a53459c0f61ed73fd597faa8ad04cafe247894a451c1bce8b70f265ac1e3ecfff8387f44b1a76d06caaef2d691f565dd56c8a55df7264b

  • memory/1672-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-65-0x0000000000690000-0x0000000000691000-memory.dmp

    Filesize

    4KB

  • memory/1672-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-73-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-72-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-81-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-67-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-68-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-80-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-61-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-79-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-78-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-74-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-75-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-76-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1672-77-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3300-64-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3300-1-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

    Filesize

    4KB

  • memory/3300-0-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3480-66-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

    Filesize

    4KB