Analysis

  • max time kernel
    142s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    14-04-2024 02:45

General

  • Target

    e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe

  • Size

    1.1MB

  • MD5

    e88bab5d7caf5f30f87e56fce21b8eb4

  • SHA1

    32bf71fcec9a64e9d8adf36201b15803a9d5812d

  • SHA256

    e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca

  • SHA512

    7cff1f10c83247257d30508ac9d8aa6a12bd1f536bcc3aee95b61144584d839e350d38f3fc1cf11b4b1da6530e5191291af1bfdbf8c906e124b7abcf14e5f3e1

  • SSDEEP

    24576:mJwXnr79xF09allHpm/rhUZqACJy5aGU:mu3rl7PmThVAOycGU

Malware Config

Extracted

Family

darkcomet

Botnet

crypter

C2

184.144.223.8:51800

overcrash.no-ip.biz:51800

Mutex

DC_MUTEX-E5P79CY

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    7LSrP3sXvcog

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • 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
  • 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 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe
    "C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1712
    • C:\Users\Admin\AppData\Local\Temp\vbc.exe
      C:\Users\Admin\AppData\Local\Temp\vbc.exe
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2144
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2552
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\e78da21d88d678da382cf9f10be55d75ce6f5d438fc2bb6471f82a51575ae1ca.exe" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:2104
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2740
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:2616
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
          PID:2528

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1.1MB

      MD5

      34aa912defa18c2c129f1e09d75c1d7e

      SHA1

      9c3046324657505a30ecd9b1fdb46c05bde7d470

      SHA256

      6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

      SHA512

      d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

    • memory/1712-0-0x0000000074660000-0x0000000074C0B000-memory.dmp

      Filesize

      5.7MB

    • memory/1712-1-0x0000000074660000-0x0000000074C0B000-memory.dmp

      Filesize

      5.7MB

    • memory/1712-2-0x0000000000B70000-0x0000000000BB0000-memory.dmp

      Filesize

      256KB

    • memory/1712-30-0x0000000074660000-0x0000000074C0B000-memory.dmp

      Filesize

      5.7MB

    • memory/2144-19-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-26-0x0000000000020000-0x0000000000021000-memory.dmp

      Filesize

      4KB

    • memory/2144-13-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-15-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-17-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-7-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-20-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2144-23-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-11-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-25-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-9-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-29-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-31-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-32-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB

    • memory/2144-33-0x00000000004C0000-0x00000000004C1000-memory.dmp

      Filesize

      4KB

    • memory/2144-39-0x0000000000400000-0x00000000004BA000-memory.dmp

      Filesize

      744KB