Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2025 04:33

General

  • Target

    bitbot_v2.8_SETUP.exe

  • Size

    394KB

  • MD5

    83b9c0ccfc41bcf9900d13d3de74ba3b

  • SHA1

    d2dddf0c6c5e6ce45f3ebf3d89826ed64fdab610

  • SHA256

    32b7afcb5c386847d67df435dd1ee685d7afa39bc0fac4437f054c5546af25dd

  • SHA512

    2181189443bda3126c4e2335d355454eee3c9576292fd9485dc75839c04cf64dc0f13c58db52f202f513d5ff342c688ca1b44f013db66d68423d22b0b5caa139

  • SSDEEP

    6144:gMU81mKGzOr2+krxLCPy95PNbyIn+dmge0qOxS+NfMA90ZnMaN/j:gMdmKWOa+wxWPiPNbDfCS+FMA90ZnD/

Malware Config

Extracted

Family

darkcomet

Botnet

Day1

C2

epicdust.servecounterstrike.com:1604

Mutex

DC_MUTEX-FE50JVD

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    85dtHfaBqD8E

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • 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 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 15 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 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bitbot_v2.8_SETUP.exe
    "C:\Users\Admin\AppData\Local\Temp\bitbot_v2.8_SETUP.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2584
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2424
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2768
    • C:\Users\Admin\AppData\Local\Temp\wdisplay.exe
      "C:\Users\Admin\AppData\Local\Temp\wdisplay.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2940
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "Shell" /d "C:\Windows\explorer.exe, C:\Users\Admin\AppData\Local\Temp\wdisplay.exe" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2704
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /v "Shell" /d "C:\Windows\explorer.exe, C:\Users\Admin\AppData\Local\Temp\wdisplay.exe" /f
          4⤵
          • Modifies WinLogon for persistence
          • System Location Discovery: System Language Discovery
          PID:2412
      • C:\Users\Admin\AppData\Local\Temp\memtest.exe
        "C:\Users\Admin\AppData\Local\Temp\memtest.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2724
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1152
    • C:\Users\Admin\AppData\Local\Temp\wdisplay.exe
      "C:\Users\Admin\AppData\Local\Temp\wdisplay.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\wdisplay.exe

    Filesize

    9KB

    MD5

    08ab5643b6469e0563d02f25a5d45de6

    SHA1

    32556b524c38559de2bf31e08883ca20e20a2b66

    SHA256

    fc070a7f806d5ad7df330bb774d3a2708ed5576d6a113dad3f20a52e3400d7b7

    SHA512

    090cf8e8f9478e2dd9c9d86cec7d3be1c846903b652d2cccfb01114ce2a689403ccb2527f74fccd37fb4ef84a3ab0bf2ea84fdce1429c48e05020a8dc9a2595f

  • \Users\Admin\AppData\Local\Temp\memtest.exe

    Filesize

    394KB

    MD5

    83b9c0ccfc41bcf9900d13d3de74ba3b

    SHA1

    d2dddf0c6c5e6ce45f3ebf3d89826ed64fdab610

    SHA256

    32b7afcb5c386847d67df435dd1ee685d7afa39bc0fac4437f054c5546af25dd

    SHA512

    2181189443bda3126c4e2335d355454eee3c9576292fd9485dc75839c04cf64dc0f13c58db52f202f513d5ff342c688ca1b44f013db66d68423d22b0b5caa139

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

    Filesize

    54KB

    MD5

    0f01571a3e4c71eb4313175aae86488e

    SHA1

    2ba648afe2cd52edf5f25e304f77d457abf7ac0e

    SHA256

    8cc51c4c2efc8c6a401aa83a0aeced0925d5d9d2a43192f35561893cdf704022

    SHA512

    159dfbb7d385bf92f4fc48ca389b89d69f6c2616e90dfa056e725d7da78a3702694a28f9c5cab7b55adc4d4dbd7bfe5d272c8b1c9931e3ac95f6326d74576794

  • memory/1152-56-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1152-55-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1152-53-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1152-54-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1152-52-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2424-10-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-8-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-23-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-22-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-21-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-20-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-18-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-12-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-38-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-17-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2424-16-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2584-0-0x0000000074B31000-0x0000000074B32000-memory.dmp

    Filesize

    4KB

  • memory/2584-3-0x0000000074B30000-0x00000000750DB000-memory.dmp

    Filesize

    5.7MB

  • memory/2584-1-0x0000000074B30000-0x00000000750DB000-memory.dmp

    Filesize

    5.7MB

  • memory/2584-2-0x0000000074B30000-0x00000000750DB000-memory.dmp

    Filesize

    5.7MB