Analysis

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

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 19:55

General

  • Target

    4be3a6686a4ea050f870f1bafb1cb6a63549e525f4215af3ff26a3de545908ffN.exe

  • Size

    520KB

  • MD5

    f27c83ca93b05f487a02bf6729e45c96

  • SHA1

    ed0cad92fff0d485a3e3b2234ea6404350ee4cd1

  • SHA256

    37ad37d2b58bc6bb5f13cbadb8e97b66b7a04541b8bba4a7e8c07c98dd356c26

  • SHA512

    63d5ddcd9d1d0a23e917853cabce96058cd926f06b4d66f4b026b61a577689c687493146321058bdda271e8fd85374586169416d9b5b01b5b53031d8c80570f4

  • 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 24 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\4be3a6686a4ea050f870f1bafb1cb6a63549e525f4215af3ff26a3de545908ffN.exe
    "C:\Users\Admin\AppData\Local\Temp\4be3a6686a4ea050f870f1bafb1cb6a63549e525f4215af3ff26a3de545908ffN.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2436
    • C:\Users\Admin\AppData\Local\Temp\4be3a6686a4ea050f870f1bafb1cb6a63549e525f4215af3ff26a3de545908ffN.exe
      "C:\Users\Admin\AppData\Local\Temp\4be3a6686a4ea050f870f1bafb1cb6a63549e525f4215af3ff26a3de545908ffN.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1996
      • 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:2404
        • 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:2808
          • 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:2620
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\AJASKGBU.bat" "
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2552
              • 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:2532
        • 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:2720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    151B

    MD5

    cac890d00365d07b9ca89def17cc3a36

    SHA1

    6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

    SHA256

    4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

    SHA512

    124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

    Filesize

    520KB

    MD5

    e288b229b2acc5eabd179478830b31db

    SHA1

    79c299e9fe15a82e521fd914bbe5dae3d7bbd225

    SHA256

    8e627b0dfcbe26a7efd066a5bff17d07c3255add5a22e1b8eb58003a31dbbba1

    SHA512

    b07c1a9557c8afa7a3e44a6e7e2bd19ec2d2a7c159bb97a79e5ea21c92b56dad2378fe4e68ef2874745ce8f6a4c28fe48e216234751d35e29247edcdbae6ee43

  • memory/1996-8-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1996-77-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1996-21-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1996-4-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1996-6-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1996-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2404-35-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2404-38-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2404-66-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2436-17-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2436-19-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2436-20-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2436-2-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2436-18-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2436-3-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2620-68-0x00000000000C0000-0x00000000000C1000-memory.dmp

    Filesize

    4KB

  • memory/2720-71-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-84-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-73-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-72-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-79-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-70-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-74-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-67-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-55-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-58-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-52-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-63-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-96-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-78-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-85-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-86-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-87-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-88-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-89-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-90-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-91-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-92-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-93-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-94-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2720-95-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2808-83-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB