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Analysis

  • max time kernel
    138s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2023, 14:03

General

  • Target

    tmp.exe

  • Size

    8.8MB

  • MD5

    9068a3d8251716410e5baa7c95db8755

  • SHA1

    d92d985a74a27591718ea4fe50eee965823b0ea1

  • SHA256

    64b2695097ec03c0c7538389dc46641e0db93cf91f8cc6055dcc8d76637e28e5

  • SHA512

    5d56f33340b2ee7bbb39be857d5d4c51e1e0baa460c3941406ec67b473e7556d81fd79ea0730db8abe267a74361a74c84945a8ff6ab891bab20084144167dc80

  • SSDEEP

    196608:rZt3tP7+if+Bvcm2JCQ5+PiTwq+iB/3ZvTXjcLcB2AS9YeBtOIcIvNTB:hlf+vloZA23ZvTog2FpyI

Malware Config

Signatures

  • FatalRat

    FatalRat is a modular infostealer family written in C++ first appearing in June 2021.

  • Gh0st RAT payload 2 IoCs
  • Gh0strat

    Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

  • Fatal Rat payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • UPX packed file 3 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).

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Checks computer location settings
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4564
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      C:\Users\Admin\AppData\Local\Temp\tmp.exe
      2⤵
        PID:1768
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c del /q C:\Users\Admin\AppData\Local\Temp\tmp.exe
        2⤵
          PID:1072

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4564-137-0x0000000010000000-0x0000000010020000-memory.dmp

        Filesize

        128KB

      • memory/4564-141-0x0000000004D90000-0x0000000004DAE000-memory.dmp

        Filesize

        120KB

      • memory/4564-142-0x0000000005250000-0x000000000539D000-memory.dmp

        Filesize

        1.3MB

      • memory/4564-145-0x0000000005250000-0x000000000539D000-memory.dmp

        Filesize

        1.3MB

      • memory/4564-146-0x0000000005250000-0x000000000539D000-memory.dmp

        Filesize

        1.3MB