Analysis

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

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-10-2024 16:27

General

  • Target

    f4ea9fff1bf1a064e7101035b0dd4e6a3c6b7b1ce2c88e569fb653a34f63d967N.exe

  • Size

    520KB

  • MD5

    fd70e2db35cfb4f56df1dd49f0846190

  • SHA1

    3c398665ec66a57c213d82ffb53c41cc6574007c

  • SHA256

    f4ea9fff1bf1a064e7101035b0dd4e6a3c6b7b1ce2c88e569fb653a34f63d967

  • SHA512

    edad6a9a96075f8eaf672373617876ae79911fb55ee311864e7556d4f12de038e0da879c91f37ecdff7e18db48e56ecec94d4c5c607b190d817c0746b452b217

  • SSDEEP

    6144:f9GGo2CwtGg6eeihEfph2CMvvqqSaYwpncOeC66AOa0aFtVEQfTo1ozVqMbF:f9fC3hh29Ya77A90aFtDfT5IMbF

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.

  • 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 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\f4ea9fff1bf1a064e7101035b0dd4e6a3c6b7b1ce2c88e569fb653a34f63d967N.exe
    "C:\Users\Admin\AppData\Local\Temp\f4ea9fff1bf1a064e7101035b0dd4e6a3c6b7b1ce2c88e569fb653a34f63d967N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Users\Admin\AppData\Local\Temp\f4ea9fff1bf1a064e7101035b0dd4e6a3c6b7b1ce2c88e569fb653a34f63d967N.exe
      "C:\Users\Admin\AppData\Local\Temp\f4ea9fff1bf1a064e7101035b0dd4e6a3c6b7b1ce2c88e569fb653a34f63d967N.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2760
      • 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:2828
        • 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:2328
          • 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:3012
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c ""C:\Users\Admin\AppData\Local\Temp\HVRUXVYJ.bat" "
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2192
              • 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:2128
        • 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:2572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    151B

    MD5

    cac890d00365d07b9ca89def17cc3a36

    SHA1

    6fa99679ede791c16b5d3e6d243a98e8bbdb7eab

    SHA256

    4f98ddee89760080a5c8a93666d2f5c97be52b741265ef4d1ce9aaebf05f12da

    SHA512

    124dc0b18e13425bde43bcbbe2a99005928e398bffcb458d498aac9e754bc5b92b703270667800876c60b0801343f2de8c6b9a1eebafd80bb4f6d5dc295dd9f1

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

    Filesize

    520KB

    MD5

    45d1b02d102082d6ffc9af9f01a61c8f

    SHA1

    da0128f3568cc2eb68ceb8b6a13e8a904db4be2c

    SHA256

    571dbfb4fabc802238955df83855eec6670eed2b84e7e80e79622659f4940233

    SHA512

    07d276dde0381567e7e5a6e1f19aedcce2c0600aa04caef510e252b159b3f8857fe5ac6a8724e6bd6c5139d1cec336f963fa7470f5ed0c773ce67711bfe70428

  • memory/2328-79-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2328-70-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2572-48-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-84-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-93-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-68-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-92-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-66-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-91-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-67-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-74-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-73-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-72-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-71-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-90-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-89-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-88-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-60-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-56-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-50-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-87-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-52-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-86-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-85-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-83-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-82-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2572-81-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2660-18-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2660-15-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2660-2-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2660-17-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2660-3-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2760-22-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2760-4-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2760-14-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2760-6-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2760-8-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2760-77-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/2760-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2828-47-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2828-69-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/2828-34-0x0000000000400000-0x0000000000483000-memory.dmp

    Filesize

    524KB

  • memory/3012-64-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB