Analysis

  • max time kernel
    161s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    30-12-2023 10:29

General

  • Target

    15eeb17996e5c5e1411b99e174cfc1f8.exe

  • Size

    676KB

  • MD5

    15eeb17996e5c5e1411b99e174cfc1f8

  • SHA1

    ba259020e5ed3a88ee0b6ee64a9d6c496eb380de

  • SHA256

    9d74405394bf0ef10eef52f08f41522a0643e6f0d837eff489fee63c1049d753

  • SHA512

    7ad8e6830ca685b33d2b38b2ee27fad68a755f5e07f52a02b477bd5132f44351dadd012082845b3c0a9831703bc0a9b9b6f6472c3385d4bbc204f2751c8bf02b

  • SSDEEP

    12288:oZm8IssHeJm1BcK7BBlQB2klG+KbW/m3HN/cEhxipgOAvxt7YHji:oQ8dw57BBlQBVI+WWiEWOE3UDi

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • 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.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 10 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

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

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

  • 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\15eeb17996e5c5e1411b99e174cfc1f8.exe
    "C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe
      "C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe"
      2⤵
      • Maps connected drives based on registry
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2324
      • C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe
        "C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2916
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2544
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe" +s +h
            5⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:2920
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Users\Admin\AppData\Local\Temp\15eeb17996e5c5e1411b99e174cfc1f8.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2876
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2144
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1620
          • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
            "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
            5⤵
            • Executes dropped EXE
            • Maps connected drives based on registry
            • Suspicious use of SetThreadContext
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1196
            • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
              "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:2660
  • C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    1⤵
    • Sets file to hidden
    • Views/modifies file attributes
    PID:3048
  • C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 4
    1⤵
    • Runs ping.exe
    PID:3040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    676KB

    MD5

    15eeb17996e5c5e1411b99e174cfc1f8

    SHA1

    ba259020e5ed3a88ee0b6ee64a9d6c496eb380de

    SHA256

    9d74405394bf0ef10eef52f08f41522a0643e6f0d837eff489fee63c1049d753

    SHA512

    7ad8e6830ca685b33d2b38b2ee27fad68a755f5e07f52a02b477bd5132f44351dadd012082845b3c0a9831703bc0a9b9b6f6472c3385d4bbc204f2751c8bf02b

  • memory/1196-119-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1196-82-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1620-66-0x0000000000400000-0x00000000004AA000-memory.dmp

    Filesize

    680KB

  • memory/2324-5-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-15-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-17-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-13-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-3-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-14-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-7-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-11-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2324-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2324-48-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2660-120-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/2916-49-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-44-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-34-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-51-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-52-0x0000000000240000-0x0000000000241000-memory.dmp

    Filesize

    4KB

  • memory/2916-27-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-20-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-41-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-22-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-67-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-38-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-30-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2916-24-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/3020-2-0x0000000000400000-0x00000000004AA000-memory.dmp

    Filesize

    680KB