Analysis

  • max time kernel
    152s
  • max time network
    168s
  • 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 15:33

General

  • Target

    6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a.exe

  • Size

    841KB

  • MD5

    82690a44bde92c0c17564e74658c0524

  • SHA1

    7ec5fce16bc61554da8391667192da0055cf2da4

  • SHA256

    6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a

  • SHA512

    2218d251752a98e5772d343f27d56afcba6d00c63e8ed6eb8e64a40e5bbdac4d90c9af494511477a65d3ff6688fd1bc5e43267a091fd358147f6bf3d2572f1c5

  • SSDEEP

    12288:2sXbaMDaRr5rLe6YtDIMT4Jg7xddVD1zlRWigtENylHVNGdFVCRYFho:32vwDIMT4yFd/v1E7o

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 4 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.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a.exe
    "C:\Users\Admin\AppData\Local\Temp\6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2608
    • 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:3392
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2816
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe
        3⤵
        • Executes dropped EXE
        PID:2316
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 448
          4⤵
          • Program crash
          PID:1280
      • 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:1892
        • 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:1104
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          PID:4796
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2316 -ip 2316
    1⤵
      PID:2632

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      224B

      MD5

      c19eb8c8e7a40e6b987f9d2ee952996e

      SHA1

      6fc3049855bc9100643e162511673c6df0f28bfb

      SHA256

      677e9e30350df17e2bc20fa9f7d730e9f7cc6e870d6520a345f5f7dc5b31f58a

      SHA512

      860713b4a787c2189ed12a47d4b68b60ac00c7a253cae52dd4eb9276dacafeae3a81906b6d0742c8ecfdfaa255777c445beb7c2a532f3c677a9903237ac97596

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

      Filesize

      841KB

      MD5

      82690a44bde92c0c17564e74658c0524

      SHA1

      7ec5fce16bc61554da8391667192da0055cf2da4

      SHA256

      6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a

      SHA512

      2218d251752a98e5772d343f27d56afcba6d00c63e8ed6eb8e64a40e5bbdac4d90c9af494511477a65d3ff6688fd1bc5e43267a091fd358147f6bf3d2572f1c5

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

      Filesize

      841KB

      MD5

      82690a44bde92c0c17564e74658c0524

      SHA1

      7ec5fce16bc61554da8391667192da0055cf2da4

      SHA256

      6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a

      SHA512

      2218d251752a98e5772d343f27d56afcba6d00c63e8ed6eb8e64a40e5bbdac4d90c9af494511477a65d3ff6688fd1bc5e43267a091fd358147f6bf3d2572f1c5

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

      Filesize

      841KB

      MD5

      82690a44bde92c0c17564e74658c0524

      SHA1

      7ec5fce16bc61554da8391667192da0055cf2da4

      SHA256

      6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a

      SHA512

      2218d251752a98e5772d343f27d56afcba6d00c63e8ed6eb8e64a40e5bbdac4d90c9af494511477a65d3ff6688fd1bc5e43267a091fd358147f6bf3d2572f1c5

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

      Filesize

      6KB

      MD5

      e60d6745837845b4797f6266fdeb756d

      SHA1

      bd4a42994d2c4ced86722e5f0cbc770eed89b538

      SHA256

      af4ccdd2b99f562597f71e67246fe6d759e574a7c521e72bf7ba08853cd635a2

      SHA512

      2a6a3c10a1f084caca40c7f9b86775df4e0f2e8c17ef9415b73344da87f7a702a9430bbffe5e6d39d5aaebf3841edcbb3754309caf84358718009abf08ac3bcc

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

      Filesize

      6KB

      MD5

      e60d6745837845b4797f6266fdeb756d

      SHA1

      bd4a42994d2c4ced86722e5f0cbc770eed89b538

      SHA256

      af4ccdd2b99f562597f71e67246fe6d759e574a7c521e72bf7ba08853cd635a2

      SHA512

      2a6a3c10a1f084caca40c7f9b86775df4e0f2e8c17ef9415b73344da87f7a702a9430bbffe5e6d39d5aaebf3841edcbb3754309caf84358718009abf08ac3bcc

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

      Filesize

      6KB

      MD5

      e60d6745837845b4797f6266fdeb756d

      SHA1

      bd4a42994d2c4ced86722e5f0cbc770eed89b538

      SHA256

      af4ccdd2b99f562597f71e67246fe6d759e574a7c521e72bf7ba08853cd635a2

      SHA512

      2a6a3c10a1f084caca40c7f9b86775df4e0f2e8c17ef9415b73344da87f7a702a9430bbffe5e6d39d5aaebf3841edcbb3754309caf84358718009abf08ac3bcc

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

      Filesize

      6KB

      MD5

      e60d6745837845b4797f6266fdeb756d

      SHA1

      bd4a42994d2c4ced86722e5f0cbc770eed89b538

      SHA256

      af4ccdd2b99f562597f71e67246fe6d759e574a7c521e72bf7ba08853cd635a2

      SHA512

      2a6a3c10a1f084caca40c7f9b86775df4e0f2e8c17ef9415b73344da87f7a702a9430bbffe5e6d39d5aaebf3841edcbb3754309caf84358718009abf08ac3bcc

    • memory/1104-155-0x0000000000000000-mapping.dmp

    • memory/1104-159-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1892-151-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/1892-152-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/1892-149-0x0000000000000000-mapping.dmp

    • memory/2316-148-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/2316-145-0x0000000000000000-mapping.dmp

    • memory/2608-153-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/2608-132-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/2608-133-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/2816-154-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/2816-139-0x0000000000000000-mapping.dmp

    • memory/2816-142-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/2816-144-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/3392-138-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3392-137-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3392-136-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3392-135-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3392-134-0x0000000000000000-mapping.dmp

    • memory/3392-143-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/4796-160-0x0000000000000000-mapping.dmp

    • memory/4796-164-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/4796-165-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB