Analysis

  • max time kernel
    120s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    03-11-2024 03:50

General

  • Target

    734478e466032b203f7777fc9154fa18ab78879ddff88007554661a2ae15322eN.exe

  • Size

    520KB

  • MD5

    ead518469e56fd742ed1955f744285e0

  • SHA1

    d78a93bc65d01bbb505f58031a74a9a7219bd434

  • SHA256

    734478e466032b203f7777fc9154fa18ab78879ddff88007554661a2ae15322e

  • SHA512

    cb4f39e081d400169d721a501ed97a094fb0a18b6980b4c8a60b4fa5c1da5be91bf5517ddb35b1e71d0f205c5e218ff74e71ecd435fb8bce105afe92c0cae3bf

  • SSDEEP

    6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMbL:f9fC3hh29Ya77A90aFtDfT5IMbL

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 26 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 use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\734478e466032b203f7777fc9154fa18ab78879ddff88007554661a2ae15322eN.exe
    "C:\Users\Admin\AppData\Local\Temp\734478e466032b203f7777fc9154fa18ab78879ddff88007554661a2ae15322eN.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Users\Admin\AppData\Local\Temp\734478e466032b203f7777fc9154fa18ab78879ddff88007554661a2ae15322eN.exe
      "C:\Users\Admin\AppData\Local\Temp\734478e466032b203f7777fc9154fa18ab78879ddff88007554661a2ae15322eN.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2200
      • 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:2676
        • 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:2756
          • 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:2948
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\XQPXLKMH.bat" "
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:1676
              • 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:1060
        • 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:2800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    151B

    MD5

    cac890d00365d07b9ca89def17cc3a36

    SHA1

    6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

    SHA256

    4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

    SHA512

    124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

    Filesize

    520KB

    MD5

    90826f7cf8c8e92ec145e8ff3615339c

    SHA1

    76e8694181a5b045bb16064a27335d59b91201fc

    SHA256

    1b674181c975eed61caaac84d27ace9abda39dfe626249ba9a1707105e2eb762

    SHA512

    8638d87b44708e8ba78d715bb93f8aad0b209fa442b424cdf9c125765530bc099b46d2174a8fa98e7d115b68379fc78c0e1d015dbda0d6430ac5d9db870d1d4c

  • memory/1056-85-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/1056-16-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1056-19-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/1056-18-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/1056-3-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/1056-2-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2200-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2200-4-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2200-6-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2200-8-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2200-66-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2200-20-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2676-34-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2676-62-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2676-37-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2756-84-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2800-80-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-60-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-99-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-79-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-54-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-76-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-72-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-71-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-70-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-52-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-50-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-58-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-61-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-67-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-86-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-87-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-88-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-89-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-90-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-91-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-92-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-93-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-94-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-95-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-96-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-97-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2800-98-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2948-77-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB