Overview

overview

10

Static

static

10

virussign....51.exe

windows7-x64

9

virussign....51.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/03/2024, 10:01

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General

  • Target
    virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe
  • Size 188KB
  • Sample240303-l2bszagh4v
  • SHA256 362851413053459c28819f434a6f047f0f2ad70126e9ea40cb0add1d147de4fc
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
persistencespywarestealerupx

Malware Config

Signatures

  • Detects executables containing possible sandbox analysis VM usernames 4 IoCs
  • UPX dump on OEP (original entry point) 9 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 18 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe
    "C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe
      "C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3164
      • C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe
        "C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:400
    • C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe
      "C:\Users\Admin\AppData\Local\Temp\virussign.com_9cf31a1fa2dc78a5eda16bd5a5121e51.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:3952

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        american fucking kicking masturbation feet hotel (Karin,Christine).mpg.exe
        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\american fucking kicking masturbation feet hotel (Karin,Christine).mpg.exe
        • Size 1.7MB
        • SHA256 3e58b5ea0bf5079069abc84f64fac803792ed79288219133766c150fb49d0723
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/400-36-0x0000000000400000-0x000000000041F000-memory.dmp
        Download

        memory/400-195-0x0000000000400000-0x000000000041F000-memory.dmp
        Download

        memory/2756-0-0x0000000000400000-0x000000000041F000-memory.dmp
        Download

        memory/2756-162-0x0000000000400000-0x000000000041F000-memory.dmp
        Download

        memory/3164-19-0x0000000000400000-0x000000000041F000-memory.dmp
        Download

        memory/3164-176-0x0000000000400000-0x000000000041F000-memory.dmp
        Download

        memory/3952-35-0x0000000000400000-0x000000000041F000-memory.dmp
        Download

        memory/3952-193-0x0000000000400000-0x000000000041F000-memory.dmp
        Download