Analysis

  • max time kernel
    151s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-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 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 1 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 49 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a.exe
    "C:\Users\Admin\AppData\Local\Temp\6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1768
    • 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:112
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\WUDHost.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:516
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Acctres.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1104
        • 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:2016

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • 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

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

    Filesize

    841KB

    MD5

    82690a44bde92c0c17564e74658c0524

    SHA1

    7ec5fce16bc61554da8391667192da0055cf2da4

    SHA256

    6f43888ef7368d6e1228af67754616cfb469b39256bda67618401f3b7dc7d50a

    SHA512

    2218d251752a98e5772d343f27d56afcba6d00c63e8ed6eb8e64a40e5bbdac4d90c9af494511477a65d3ff6688fd1bc5e43267a091fd358147f6bf3d2572f1c5

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

    Filesize

    6KB

    MD5

    e60d6745837845b4797f6266fdeb756d

    SHA1

    bd4a42994d2c4ced86722e5f0cbc770eed89b538

    SHA256

    af4ccdd2b99f562597f71e67246fe6d759e574a7c521e72bf7ba08853cd635a2

    SHA512

    2a6a3c10a1f084caca40c7f9b86775df4e0f2e8c17ef9415b73344da87f7a702a9430bbffe5e6d39d5aaebf3841edcbb3754309caf84358718009abf08ac3bcc

  • memory/112-58-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-81-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-66-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-67-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-69-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-71-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-72-0x000000000048F888-mapping.dmp

  • memory/112-73-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-75-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-62-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-60-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-57-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-83-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/112-64-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/516-82-0x0000000074DB0000-0x000000007535B000-memory.dmp

    Filesize

    5.7MB

  • memory/516-77-0x0000000000000000-mapping.dmp

  • memory/516-84-0x0000000074DB0000-0x000000007535B000-memory.dmp

    Filesize

    5.7MB

  • memory/1104-87-0x0000000000000000-mapping.dmp

  • memory/1104-90-0x0000000074DB0000-0x000000007535B000-memory.dmp

    Filesize

    5.7MB

  • memory/1104-91-0x0000000074DB0000-0x000000007535B000-memory.dmp

    Filesize

    5.7MB

  • memory/1768-56-0x0000000074DB0000-0x000000007535B000-memory.dmp

    Filesize

    5.7MB

  • memory/1768-55-0x0000000074DB0000-0x000000007535B000-memory.dmp

    Filesize

    5.7MB

  • memory/1768-92-0x0000000074DB0000-0x000000007535B000-memory.dmp

    Filesize

    5.7MB

  • memory/1768-54-0x0000000076961000-0x0000000076963000-memory.dmp

    Filesize

    8KB

  • memory/2016-112-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2016-108-0x000000000048F888-mapping.dmp