Analysis

  • max time kernel
    120s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 16:33

General

  • Target

    a1a5b5e24c9565fe290da7d5f4082b156e7ad9793d56b69d3da08596c9119cf2N.exe

  • Size

    520KB

  • MD5

    b10b3441cfac9871aec850af5e1fcc90

  • SHA1

    8c67acd3b64b66eebfe8bb418cd981db728861f6

  • SHA256

    a1a5b5e24c9565fe290da7d5f4082b156e7ad9793d56b69d3da08596c9119cf2

  • SHA512

    f07dc79ee0dfa50009f18afe2ae462e5023818cd755d0ea34f3267f4975fb09107836b0b40dea0ce727ac64806ac8e44e90856363aaa51651b585c44236bf83d

  • SSDEEP

    6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMbO:f9fC3hh29Ya77A90aFtDfT5IMbO

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 2 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\a1a5b5e24c9565fe290da7d5f4082b156e7ad9793d56b69d3da08596c9119cf2N.exe
    "C:\Users\Admin\AppData\Local\Temp\a1a5b5e24c9565fe290da7d5f4082b156e7ad9793d56b69d3da08596c9119cf2N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Users\Admin\AppData\Local\Temp\a1a5b5e24c9565fe290da7d5f4082b156e7ad9793d56b69d3da08596c9119cf2N.exe
      "C:\Users\Admin\AppData\Local\Temp\a1a5b5e24c9565fe290da7d5f4082b156e7ad9793d56b69d3da08596c9119cf2N.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2668
      • C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\winupd.exe -notray
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2952
        • 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:2732
          • 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:2756
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\LHVTKUNM.bat" "
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2704
              • 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:3048
        • 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:2708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    151B

    MD5

    cac890d00365d07b9ca89def17cc3a36

    SHA1

    6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

    SHA256

    4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

    SHA512

    124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

    Filesize

    520KB

    MD5

    eafbb56d47617394094e1fb45772520f

    SHA1

    13e94a3406cf93ca551ab7a06ed994b02879cb22

    SHA256

    881f9c2ea91e46a10adc2e88224ebc7a3a6f18a9f0119318a1f6cafb3ecb2575

    SHA512

    c13f8c2b628abd54ca73088e5d5005cb7522522599d5afab98619f56e1a5fc7e6edaaf35df2358545f8e8f75354eeb65d79cc3710efac373b02437f6709e5eb2

  • memory/1788-3-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/1788-2-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1788-19-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/1788-18-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1788-16-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2668-4-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2668-66-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2668-14-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2668-6-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2668-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2668-8-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2708-83-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-70-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-59-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-56-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-53-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-61-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-95-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-51-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-48-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-94-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-72-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-71-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-77-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-76-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-75-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-92-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-91-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-93-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-90-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-82-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-62-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-84-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-85-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-86-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-87-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-88-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2708-89-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2732-81-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2756-73-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2952-46-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2952-34-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2952-60-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2952-63-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB