Analysis

  • max time kernel
    47s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    15-03-2023 16:16

General

  • Target

    2abeee8718f57cf5318197003550909d.exe

  • Size

    1.4MB

  • MD5

    2abeee8718f57cf5318197003550909d

  • SHA1

    9e4662401cc01283eb03ad9b79a52b02713963fb

  • SHA256

    5d7f6ab4f324bfaa347af5917a59a9b633f4dd891a96870235c6509fb9e7b5d4

  • SHA512

    4897d94a4263451890e060a5488570c889dbd54e55fe9f4dc8c8ce00739ecf696392d9534d4f534370c59c073d496e0e5afac985cfb12b3c5d5e2a11523b06d8

  • SSDEEP

    24576:tVrEOG6glVYeR74l7UiAHbdgSMs3hn3x2VpuDJGhuNKx/la60x:ttE16gLYK7BBHMox2buDYQQh060x

Malware Config

Extracted

Family

darkcomet

Botnet

luxygt

C2

dartkom22.ddns.net:2009

Mutex

DCMIN_MUTEX-UT0S86Q

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    fT1b0Py34wS5

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2abeee8718f57cf5318197003550909d.exe
    "C:\Users\Admin\AppData\Local\Temp\2abeee8718f57cf5318197003550909d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:308
    • C:\Users\Admin\AppData\Local\Temp\2abeee8718f57cf5318197003550909d.exe
      "C:\Users\Admin\AppData\Local\Temp\2abeee8718f57cf5318197003550909d.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:872
      • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
        "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:664
        • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
          "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
          4⤵
          • Modifies WinLogon for persistence
          • Modifies firewall policy service
          • Modifies security service
          • Windows security bypass
          • Disables RegEdit via registry modification
          • Executes dropped EXE
          • Windows security modification
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:588
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
              PID:1380

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Winlogon Helper DLL

    1
    T1004

    Modify Existing Service

    2
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    7
    T1112

    Disabling Security Tools

    2
    T1089

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      Filesize

      1.4MB

      MD5

      2abeee8718f57cf5318197003550909d

      SHA1

      9e4662401cc01283eb03ad9b79a52b02713963fb

      SHA256

      5d7f6ab4f324bfaa347af5917a59a9b633f4dd891a96870235c6509fb9e7b5d4

      SHA512

      4897d94a4263451890e060a5488570c889dbd54e55fe9f4dc8c8ce00739ecf696392d9534d4f534370c59c073d496e0e5afac985cfb12b3c5d5e2a11523b06d8

    • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      Filesize

      1.4MB

      MD5

      2abeee8718f57cf5318197003550909d

      SHA1

      9e4662401cc01283eb03ad9b79a52b02713963fb

      SHA256

      5d7f6ab4f324bfaa347af5917a59a9b633f4dd891a96870235c6509fb9e7b5d4

      SHA512

      4897d94a4263451890e060a5488570c889dbd54e55fe9f4dc8c8ce00739ecf696392d9534d4f534370c59c073d496e0e5afac985cfb12b3c5d5e2a11523b06d8

    • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      Filesize

      1.4MB

      MD5

      2abeee8718f57cf5318197003550909d

      SHA1

      9e4662401cc01283eb03ad9b79a52b02713963fb

      SHA256

      5d7f6ab4f324bfaa347af5917a59a9b633f4dd891a96870235c6509fb9e7b5d4

      SHA512

      4897d94a4263451890e060a5488570c889dbd54e55fe9f4dc8c8ce00739ecf696392d9534d4f534370c59c073d496e0e5afac985cfb12b3c5d5e2a11523b06d8

    • \Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      Filesize

      1.4MB

      MD5

      2abeee8718f57cf5318197003550909d

      SHA1

      9e4662401cc01283eb03ad9b79a52b02713963fb

      SHA256

      5d7f6ab4f324bfaa347af5917a59a9b633f4dd891a96870235c6509fb9e7b5d4

      SHA512

      4897d94a4263451890e060a5488570c889dbd54e55fe9f4dc8c8ce00739ecf696392d9534d4f534370c59c073d496e0e5afac985cfb12b3c5d5e2a11523b06d8

    • memory/308-63-0x0000000005120000-0x0000000005160000-memory.dmp
      Filesize

      256KB

    • memory/308-54-0x0000000000D90000-0x0000000000F08000-memory.dmp
      Filesize

      1.5MB

    • memory/308-55-0x0000000000520000-0x000000000058E000-memory.dmp
      Filesize

      440KB

    • memory/308-56-0x00000000003D0000-0x00000000003DE000-memory.dmp
      Filesize

      56KB

    • memory/588-97-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-99-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-98-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-100-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-96-0x0000000000190000-0x0000000000191000-memory.dmp
      Filesize

      4KB

    • memory/588-95-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-92-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-91-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-120-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/588-86-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/664-77-0x0000000000B90000-0x0000000000D08000-memory.dmp
      Filesize

      1.5MB

    • memory/872-66-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/872-93-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-58-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-69-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-59-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-94-0x0000000000110000-0x0000000000111000-memory.dmp
      Filesize

      4KB

    • memory/872-57-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-67-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-68-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-65-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-64-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-62-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-61-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/872-60-0x0000000000400000-0x00000000004B2000-memory.dmp
      Filesize

      712KB

    • memory/1380-115-0x00000000001B0000-0x00000000001B1000-memory.dmp
      Filesize

      4KB

    • memory/1380-101-0x0000000000080000-0x0000000000081000-memory.dmp
      Filesize

      4KB