Resubmissions

21-01-2025 13:07

250121-qc4vnsvmav 10

21-01-2025 13:04

250121-qbcpssvlb1 10

Analysis

  • max time kernel
    47s
  • max time network
    23s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    21-01-2025 13:07

General

  • Target

    d172679e08b720d86c0bf850612d5b6c3c85f41b3605701e2e19d2b6e5a8425bN.exe

  • Size

    520KB

  • MD5

    8aa060a42822fb2f56e0dc00689cdf00

  • SHA1

    22ea29f7f24c591e62d3a74f07f859a17fbb9e0f

  • SHA256

    d172679e08b720d86c0bf850612d5b6c3c85f41b3605701e2e19d2b6e5a8425b

  • SHA512

    056eed58046e1b387cbe85e105d8269b7cb96fd4ae61663e50e36079a4c0a0f4dd499bed86724a04f7d11bc1b1306c12d25c78117434755aa1d1b26fb8ad25be

  • SSDEEP

    6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMbb:f9fC3hh29Ya77A90aFtDfT5IMbb

Malware Config

Extracted

Family

darkcomet

Botnet

PrivateEye

C2

ratblackshades.no-ip.biz:1604

Mutex

DC_MUTEX-ACC1R98

Attributes
  • gencode

    8GG5LVVGljSF

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • UPX packed file 20 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of FindShellTrayWindow 13 IoCs
  • Suspicious use of SendNotifyMessage 13 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d172679e08b720d86c0bf850612d5b6c3c85f41b3605701e2e19d2b6e5a8425bN.exe
    "C:\Users\Admin\AppData\Local\Temp\d172679e08b720d86c0bf850612d5b6c3c85f41b3605701e2e19d2b6e5a8425bN.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2064
    • C:\Users\Admin\AppData\Local\Temp\d172679e08b720d86c0bf850612d5b6c3c85f41b3605701e2e19d2b6e5a8425bN.exe
      "C:\Users\Admin\AppData\Local\Temp\d172679e08b720d86c0bf850612d5b6c3c85f41b3605701e2e19d2b6e5a8425bN.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2564
      • C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2932
        • C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2500
          • C:\Windows\SysWOW64\ipconfig.exe
            "C:\Windows\system32\ipconfig.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            • Gathers network information
            • Suspicious use of WriteProcessMemory
            PID:2720
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\LDTCKUAQ.bat" "
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2752
              • C:\Windows\SysWOW64\reg.exe
                REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v WinUpdate /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray" /f
                7⤵
                • Adds Run key to start application
                • System Location Discovery: System Language Discovery
                • Modifies registry key
                PID:1300
        • C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:3052
  • C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    1⤵
      PID:2612
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1204

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\LDTCKUAQ.bat

      Filesize

      151B

      MD5

      cac890d00365d07b9ca89def17cc3a36

      SHA1

      6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

      SHA256

      4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

      SHA512

      124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

    • \Users\Admin\AppData\Roaming\Microsoft\winupd.exe

      Filesize

      520KB

      MD5

      7e91449de36e23bc115cc87be502fdf1

      SHA1

      a203a1c1f903e7a40e9c0c7d2408b0bbf7c26a5e

      SHA256

      b6e5ebf4f81f225ada7704c2ae27c4b52d385102cd58ace3ae85982000b0e0c7

      SHA512

      e2482aaed48fc75f04b2d8879a4363749414b300246c6b96c930f5e50b11c19374d22150aba481f7478f89884f7c4002be0ad689a93591355c7759cbf7b3aba1

    • memory/1204-93-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

    • memory/1204-92-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

    • memory/1204-90-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

    • memory/1204-89-0x0000000140000000-0x00000001405E8000-memory.dmp

      Filesize

      5.9MB

    • memory/2064-4-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/2064-3-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/2064-2-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/2064-20-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/2064-21-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/2500-82-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2564-75-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2564-5-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2564-15-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2564-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2564-9-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2564-7-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2720-72-0x0000000000080000-0x0000000000081000-memory.dmp

      Filesize

      4KB

    • memory/2932-64-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/2932-37-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/2932-63-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/2932-48-0x0000000000400000-0x0000000000483000-memory.dmp

      Filesize

      524KB

    • memory/3052-77-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-84-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-78-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-61-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-71-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-49-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-70-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-51-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-83-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-74-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-85-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-86-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-87-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-88-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-53-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-58-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-91-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-66-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-65-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/3052-94-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB