Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 02:21

General

  • Target

    98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe

  • Size

    804KB

  • MD5

    98a05811eb6b0faeaba9937bb089af44

  • SHA1

    508c223b6147744d85d821b9f01caa1c1abb39e9

  • SHA256

    bce53cc6169641be9c7ffa7c5a4fc542066fa82e7cdfa832af71e8b27ad60d70

  • SHA512

    153e7494595f3a49cb2fb95bfb1f0a3214de740d64982e199801c188c38bedc21f0835b6b18668cc4122c42c58de25cbb6d2f2f1827b169d2e6ac5b92600df96

  • SSDEEP

    12288:eSTnw+tBhvxFDsE4cx/DbnD7Yj19/8LDt9aQFonL7XT8Y1+AYnvJmES:vnBpFYE4ctDikB9af/XZI9vsT

Malware Config

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 3 IoCs
  • Windows security bypass 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.

  • Executes dropped EXE 3 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4028
    • C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe"
      2⤵
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4128
      • C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe"
        3⤵
        • 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:2236
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe" +s +h
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2628
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe" +s +h
            5⤵
            • Sets file to hidden
            • System Location Discovery: System Language Discovery
            • Views/modifies file attributes
            PID:112
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:5008
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
            5⤵
            • Sets file to hidden
            • System Location Discovery: System Language Discovery
            • Views/modifies file attributes
            PID:1148
        • C:\Realtek\audio.exe
          "C:\Realtek\audio.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:552
          • C:\Realtek\audio.exe
            "C:\Realtek\audio.exe"
            5⤵
            • Executes dropped EXE
            • Writes to the Master Boot Record (MBR)
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1664
            • C:\Realtek\audio.exe
              "C:\Realtek\audio.exe"
              6⤵
              • Modifies firewall policy service
              • Windows security bypass
              • Executes dropped EXE
              • Windows security modification
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:3568
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\98a05811eb6b0faeaba9937bb089af44_JaffaCakes118.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:1292
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 5
            5⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:2908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Realtek\audio.exe

    Filesize

    804KB

    MD5

    98a05811eb6b0faeaba9937bb089af44

    SHA1

    508c223b6147744d85d821b9f01caa1c1abb39e9

    SHA256

    bce53cc6169641be9c7ffa7c5a4fc542066fa82e7cdfa832af71e8b27ad60d70

    SHA512

    153e7494595f3a49cb2fb95bfb1f0a3214de740d64982e199801c188c38bedc21f0835b6b18668cc4122c42c58de25cbb6d2f2f1827b169d2e6ac5b92600df96

  • memory/1664-88-0x0000000000400000-0x00000000004AE000-memory.dmp

    Filesize

    696KB

  • memory/1664-82-0x0000000000400000-0x00000000004AE000-memory.dmp

    Filesize

    696KB

  • memory/2236-79-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2236-7-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2236-8-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2236-12-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2236-11-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/2236-13-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-94-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-97-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-87-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-107-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-91-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-106-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-93-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-92-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-90-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-95-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-96-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-105-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-98-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-99-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-100-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-101-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-102-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-103-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/3568-104-0x0000000000400000-0x00000000004B3000-memory.dmp

    Filesize

    716KB

  • memory/4128-9-0x0000000000400000-0x00000000004AE000-memory.dmp

    Filesize

    696KB

  • memory/4128-2-0x0000000000400000-0x00000000004AE000-memory.dmp

    Filesize

    696KB

  • memory/4128-4-0x0000000000400000-0x00000000004AE000-memory.dmp

    Filesize

    696KB