Analysis

  • max time kernel
    206s
  • max time network
    207s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 18:38

General

  • Target

    8b555ed9942d3bd85ebe92054e2eeb62da2c2ae42e6bf4bff10b493ed3368664.exe

  • Size

    833KB

  • MD5

    8e8a606820a6f66e7963b330764cf559

  • SHA1

    96a5a61510042f2f1cf1ce0ed659fc0cf8d70e48

  • SHA256

    8b555ed9942d3bd85ebe92054e2eeb62da2c2ae42e6bf4bff10b493ed3368664

  • SHA512

    1a56aa7923b4ba706c179d1066739a36662c6896e24a33e0dd897b03b2ac11d75df8e0cbf27a02522f45e44e3c84977679df0194e5a0ad6146719b66a5211aac

  • SSDEEP

    12288:bEJC79h+G6Mr8i+Y1Xx6qDNQXkdQRlYtyIAo5evUoRNuhjEQyMmFaLB0Ckg9WsF:bXhDR82nokdQjYZAoIcoRNWdAaLnkmF

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

markgraham.noip.me:2124

Mutex

DCMIN_MUTEX-FUSP59W

Attributes
  • gencode

    Le3UD9gfvz8p

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

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

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8b555ed9942d3bd85ebe92054e2eeb62da2c2ae42e6bf4bff10b493ed3368664.exe
    "C:\Users\Admin\AppData\Local\Temp\8b555ed9942d3bd85ebe92054e2eeb62da2c2ae42e6bf4bff10b493ed3368664.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4704
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2248
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4340
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4748
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:812
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          PID:1732

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\IpOverUsbSvrc.exe.log

    Filesize

    224B

    MD5

    c19eb8c8e7a40e6b987f9d2ee952996e

    SHA1

    6fc3049855bc9100643e162511673c6df0f28bfb

    SHA256

    677e9e30350df17e2bc20fa9f7d730e9f7cc6e870d6520a345f5f7dc5b31f58a

    SHA512

    860713b4a787c2189ed12a47d4b68b60ac00c7a253cae52dd4eb9276dacafeae3a81906b6d0742c8ecfdfaa255777c445beb7c2a532f3c677a9903237ac97596

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe

    Filesize

    833KB

    MD5

    8e8a606820a6f66e7963b330764cf559

    SHA1

    96a5a61510042f2f1cf1ce0ed659fc0cf8d70e48

    SHA256

    8b555ed9942d3bd85ebe92054e2eeb62da2c2ae42e6bf4bff10b493ed3368664

    SHA512

    1a56aa7923b4ba706c179d1066739a36662c6896e24a33e0dd897b03b2ac11d75df8e0cbf27a02522f45e44e3c84977679df0194e5a0ad6146719b66a5211aac

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe

    Filesize

    833KB

    MD5

    8e8a606820a6f66e7963b330764cf559

    SHA1

    96a5a61510042f2f1cf1ce0ed659fc0cf8d70e48

    SHA256

    8b555ed9942d3bd85ebe92054e2eeb62da2c2ae42e6bf4bff10b493ed3368664

    SHA512

    1a56aa7923b4ba706c179d1066739a36662c6896e24a33e0dd897b03b2ac11d75df8e0cbf27a02522f45e44e3c84977679df0194e5a0ad6146719b66a5211aac

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe

    Filesize

    17KB

    MD5

    fd03ff313a655e0b59dce81044bc6341

    SHA1

    0fa0dc26876f636956c3de82685bdbbc8ad3ef86

    SHA256

    1f1c8c1458eaee47a448513db52ddb536406146d48793c3c24f41eb72b13cec9

    SHA512

    00fdf54987cb8abd0c68619e02991aeb50e5509ea56b0e5fa613ac29fddcc57c585cd0e5be055cb5c6563828b6a631666fe6e7004dada7607ddd903659264ddd

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe

    Filesize

    17KB

    MD5

    fd03ff313a655e0b59dce81044bc6341

    SHA1

    0fa0dc26876f636956c3de82685bdbbc8ad3ef86

    SHA256

    1f1c8c1458eaee47a448513db52ddb536406146d48793c3c24f41eb72b13cec9

    SHA512

    00fdf54987cb8abd0c68619e02991aeb50e5509ea56b0e5fa613ac29fddcc57c585cd0e5be055cb5c6563828b6a631666fe6e7004dada7607ddd903659264ddd

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe

    Filesize

    17KB

    MD5

    fd03ff313a655e0b59dce81044bc6341

    SHA1

    0fa0dc26876f636956c3de82685bdbbc8ad3ef86

    SHA256

    1f1c8c1458eaee47a448513db52ddb536406146d48793c3c24f41eb72b13cec9

    SHA512

    00fdf54987cb8abd0c68619e02991aeb50e5509ea56b0e5fa613ac29fddcc57c585cd0e5be055cb5c6563828b6a631666fe6e7004dada7607ddd903659264ddd

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\IpOverUsbSvrc.exe

    Filesize

    17KB

    MD5

    fd03ff313a655e0b59dce81044bc6341

    SHA1

    0fa0dc26876f636956c3de82685bdbbc8ad3ef86

    SHA256

    1f1c8c1458eaee47a448513db52ddb536406146d48793c3c24f41eb72b13cec9

    SHA512

    00fdf54987cb8abd0c68619e02991aeb50e5509ea56b0e5fa613ac29fddcc57c585cd0e5be055cb5c6563828b6a631666fe6e7004dada7607ddd903659264ddd

  • memory/812-156-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/812-152-0x0000000000000000-mapping.dmp

  • memory/1732-162-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/1732-161-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/1732-157-0x0000000000000000-mapping.dmp

  • memory/2248-135-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2248-137-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2248-141-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2248-136-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2248-134-0x0000000000000000-mapping.dmp

  • memory/2248-143-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/4340-150-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4340-144-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4340-138-0x0000000000000000-mapping.dmp

  • memory/4340-142-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4704-151-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4704-132-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4704-133-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4748-149-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4748-148-0x00000000748F0000-0x0000000074EA1000-memory.dmp

    Filesize

    5.7MB

  • memory/4748-145-0x0000000000000000-mapping.dmp