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Analysis

  • max time kernel
    187s
  • max time network
    193s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/12/2022, 19:56

General

  • Target

    a45f2cfac684b87635a67fcd3ec67a46b5dda029574f5f3f3ca3c9381a3929c1.exe

  • Size

    1.0MB

  • MD5

    8bc0e7d1a78d454caaa87d3b7caa92c3

  • SHA1

    d0135e2e13f0d13aa2c49fb0d78f987f8d9ad67f

  • SHA256

    a45f2cfac684b87635a67fcd3ec67a46b5dda029574f5f3f3ca3c9381a3929c1

  • SHA512

    237016f4e9dd9b6a10359926caf886aea96595b20e87117b316019151e361895ba5ae10efd13f1c3066bc07ef4746d9ef59f857da7a6adc5966f75fbfebc4454

  • SSDEEP

    24576:s4SRmIAZ6QGs1ikSHP5hs10Ot1LisENzP:s4SZO5SvOtVisEJP

Malware Config

Extracted

Family

darkcomet

Botnet

V2

C2

spamblocker.no-ip.biz:1604

Mutex

DC_MUTEX-NZ2A7W0

Attributes
  • gencode

    ji6MMZDpnHyq

  • 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 3 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 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\a45f2cfac684b87635a67fcd3ec67a46b5dda029574f5f3f3ca3c9381a3929c1.exe
    "C:\Users\Admin\AppData\Local\Temp\a45f2cfac684b87635a67fcd3ec67a46b5dda029574f5f3f3ca3c9381a3929c1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2332
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pspluginwkr.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pspluginwkr.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\winresume.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\winresume.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2804
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe"
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2072
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pspluginwkr.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\pspluginwkr.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:3304

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    224B

    MD5

    c19eb8c8e7a40e6b987f9d2ee952996e

    SHA1

    6fc3049855bc9100643e162511673c6df0f28bfb

    SHA256

    677e9e30350df17e2bc20fa9f7d730e9f7cc6e870d6520a345f5f7dc5b31f58a

    SHA512

    860713b4a787c2189ed12a47d4b68b60ac00c7a253cae52dd4eb9276dacafeae3a81906b6d0742c8ecfdfaa255777c445beb7c2a532f3c677a9903237ac97596

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

    Filesize

    15KB

    MD5

    99e0106f89c12144cd3c82216382e110

    SHA1

    44e1640b98b27aca3530d41a7b853c73172623fc

    SHA256

    4bef292be3b4fc87d7300408032886248e6bcfa002d3c5e48b7e47d6fedc78c5

    SHA512

    3b6d8f7679896ab1e69ae94025162116397c8adcf46a95c30dd54b2f8f95e0fc6adc9f068e5ecd4ed070084c646e12368588511756374c62c7525bf3b91e10ab

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

    Filesize

    15KB

    MD5

    99e0106f89c12144cd3c82216382e110

    SHA1

    44e1640b98b27aca3530d41a7b853c73172623fc

    SHA256

    4bef292be3b4fc87d7300408032886248e6bcfa002d3c5e48b7e47d6fedc78c5

    SHA512

    3b6d8f7679896ab1e69ae94025162116397c8adcf46a95c30dd54b2f8f95e0fc6adc9f068e5ecd4ed070084c646e12368588511756374c62c7525bf3b91e10ab

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

    Filesize

    15KB

    MD5

    99e0106f89c12144cd3c82216382e110

    SHA1

    44e1640b98b27aca3530d41a7b853c73172623fc

    SHA256

    4bef292be3b4fc87d7300408032886248e6bcfa002d3c5e48b7e47d6fedc78c5

    SHA512

    3b6d8f7679896ab1e69ae94025162116397c8adcf46a95c30dd54b2f8f95e0fc6adc9f068e5ecd4ed070084c646e12368588511756374c62c7525bf3b91e10ab

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

    Filesize

    1.0MB

    MD5

    8bc0e7d1a78d454caaa87d3b7caa92c3

    SHA1

    d0135e2e13f0d13aa2c49fb0d78f987f8d9ad67f

    SHA256

    a45f2cfac684b87635a67fcd3ec67a46b5dda029574f5f3f3ca3c9381a3929c1

    SHA512

    237016f4e9dd9b6a10359926caf886aea96595b20e87117b316019151e361895ba5ae10efd13f1c3066bc07ef4746d9ef59f857da7a6adc5966f75fbfebc4454

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

    Filesize

    1.0MB

    MD5

    8bc0e7d1a78d454caaa87d3b7caa92c3

    SHA1

    d0135e2e13f0d13aa2c49fb0d78f987f8d9ad67f

    SHA256

    a45f2cfac684b87635a67fcd3ec67a46b5dda029574f5f3f3ca3c9381a3929c1

    SHA512

    237016f4e9dd9b6a10359926caf886aea96595b20e87117b316019151e361895ba5ae10efd13f1c3066bc07ef4746d9ef59f857da7a6adc5966f75fbfebc4454

  • C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch

    Filesize

    514B

    MD5

    d369cb0d999aecfc2569c7acca61b89a

    SHA1

    d3f2669bc0a7e18655451a66145770c741fbdb22

    SHA256

    fa9b43598af8c54ba2db25a2d7f6c2e13c954fc49464e95baccbf36166fbd231

    SHA512

    b64770d41d537c43afd1c42581c192fecef65040f450518cf3b2ac3e92ac971e4ae7c833400af23e8f03b58fa5605a3aa02ddbc2ffe1a9b88d571e6bfc25da2d

  • memory/1396-132-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/1396-161-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/1396-133-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/2072-154-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2332-144-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2332-136-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2332-141-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2332-135-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2332-137-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2804-148-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/2804-149-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/2964-142-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/2964-155-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/2964-145-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/3304-160-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB

  • memory/3304-162-0x0000000074D80000-0x0000000075331000-memory.dmp

    Filesize

    5.7MB