Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-11-2024 16:54

General

  • Target

    f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe

  • Size

    5.4MB

  • MD5

    616fd2b3429b816fc7ebc62d103cc995

  • SHA1

    5a202f24dda9c7b9407b1bc41c27a84c29ea964f

  • SHA256

    f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6

  • SHA512

    a0c1a065d6d6b18127c92597baccbcd4fd2136eee4462182899a928c163a2adad065ceabd6a12bf369a8e5ceafb318c29782100ebfc3e63e014602b7253d1bc2

  • SSDEEP

    98304:9uv8pxJvkLXr8+VOOrjL6eRhzvBG40st9Rl0E4dV0Q89XbrnH:9dY4+QOrjpRhzBL0K9H05dCQwH

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
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • VMProtect packed file 6 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Drops file in System32 directory 3 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 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.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe
    "C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2808
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2580
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2600
    • 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:2588
      • 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:2564
    • C:\Windows\SysWOW64\Runtime Broker.exe
      "C:\Windows\system32\Runtime Broker.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2612
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
          PID:2604
        • C:\Windows\explorer.exe
          "C:\Windows\explorer.exe"
          3⤵
            PID:748
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            3⤵
            • System Location Discovery: System Language Discovery
            PID:2020

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • \Windows\SysWOW64\Runtime Broker.exe

        Filesize

        5.4MB

        MD5

        616fd2b3429b816fc7ebc62d103cc995

        SHA1

        5a202f24dda9c7b9407b1bc41c27a84c29ea964f

        SHA256

        f461b17cf839f10db53155f207682533d99a056ee3a883ff7e0e6f5bc77f87c6

        SHA512

        a0c1a065d6d6b18127c92597baccbcd4fd2136eee4462182899a928c163a2adad065ceabd6a12bf369a8e5ceafb318c29782100ebfc3e63e014602b7253d1bc2

      • memory/2612-62-0x0000000000270000-0x0000000000271000-memory.dmp

        Filesize

        4KB

      • memory/2612-65-0x0000000000280000-0x0000000000281000-memory.dmp

        Filesize

        4KB

      • memory/2612-67-0x0000000000280000-0x0000000000281000-memory.dmp

        Filesize

        4KB

      • memory/2612-70-0x0000000000290000-0x0000000000291000-memory.dmp

        Filesize

        4KB

      • memory/2612-75-0x00000000002A0000-0x00000000002A1000-memory.dmp

        Filesize

        4KB

      • memory/2612-77-0x00000000002A0000-0x00000000002A1000-memory.dmp

        Filesize

        4KB

      • memory/2612-72-0x0000000000290000-0x0000000000291000-memory.dmp

        Filesize

        4KB

      • memory/2612-60-0x0000000000270000-0x0000000000271000-memory.dmp

        Filesize

        4KB

      • memory/2808-14-0x0000000000340000-0x0000000000341000-memory.dmp

        Filesize

        4KB

      • memory/2808-42-0x0000000000400000-0x0000000000D3E000-memory.dmp

        Filesize

        9.2MB

      • memory/2808-9-0x0000000000330000-0x0000000000331000-memory.dmp

        Filesize

        4KB

      • memory/2808-32-0x0000000000380000-0x0000000000381000-memory.dmp

        Filesize

        4KB

      • memory/2808-34-0x0000000000380000-0x0000000000381000-memory.dmp

        Filesize

        4KB

      • memory/2808-7-0x0000000000330000-0x0000000000331000-memory.dmp

        Filesize

        4KB

      • memory/2808-6-0x00000000002E0000-0x00000000002E1000-memory.dmp

        Filesize

        4KB

      • memory/2808-4-0x00000000002E0000-0x00000000002E1000-memory.dmp

        Filesize

        4KB

      • memory/2808-2-0x00000000002E0000-0x00000000002E1000-memory.dmp

        Filesize

        4KB

      • memory/2808-36-0x0000000000380000-0x0000000000381000-memory.dmp

        Filesize

        4KB

      • memory/2808-37-0x0000000000390000-0x0000000000391000-memory.dmp

        Filesize

        4KB

      • memory/2808-39-0x0000000000390000-0x0000000000391000-memory.dmp

        Filesize

        4KB

      • memory/2808-41-0x0000000000390000-0x0000000000391000-memory.dmp

        Filesize

        4KB

      • memory/2808-11-0x0000000000330000-0x0000000000331000-memory.dmp

        Filesize

        4KB

      • memory/2808-44-0x0000000000400000-0x0000000000D3E000-memory.dmp

        Filesize

        9.2MB

      • memory/2808-46-0x0000000000400000-0x0000000000D3E000-memory.dmp

        Filesize

        9.2MB

      • memory/2808-0-0x00000000004A4000-0x00000000007D9000-memory.dmp

        Filesize

        3.2MB

      • memory/2808-16-0x0000000000340000-0x0000000000341000-memory.dmp

        Filesize

        4KB

      • memory/2808-19-0x0000000000350000-0x0000000000351000-memory.dmp

        Filesize

        4KB

      • memory/2808-21-0x0000000000350000-0x0000000000351000-memory.dmp

        Filesize

        4KB

      • memory/2808-24-0x0000000000360000-0x0000000000361000-memory.dmp

        Filesize

        4KB

      • memory/2808-26-0x0000000000360000-0x0000000000361000-memory.dmp

        Filesize

        4KB

      • memory/2808-29-0x0000000000370000-0x0000000000371000-memory.dmp

        Filesize

        4KB

      • memory/2808-31-0x0000000000370000-0x0000000000371000-memory.dmp

        Filesize

        4KB

      • memory/2808-1-0x0000000000400000-0x0000000000D3E000-memory.dmp

        Filesize

        9.2MB

      • memory/2808-139-0x0000000000400000-0x0000000000D3E000-memory.dmp

        Filesize

        9.2MB

      • memory/2808-140-0x00000000004A4000-0x00000000007D9000-memory.dmp

        Filesize

        3.2MB