Overview

overview

10

Static

static

10

virussign....fd.exe

windows7-x64

9

virussign....fd.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, 11:14

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General

  • Target
    virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.exe
  • Size 821KB
  • Sample240303-nb7ttsaa87
  • SHA256 319bff3ebf123e3a627a24132eaedc8844e3941c956aee327f2eae46e0acbcd8
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
persistencespywarestealerupx

Malware Config

Signatures

  • Detects executables containing possible sandbox analysis VM usernames 5 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_baf34deb155ee489aa424c3f4bfc7ffd.exe
    "C:\Users\Admin\AppData\Local\Temp\virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.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:932
    • C:\Users\Admin\AppData\Local\Temp\virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.exe
      "C:\Users\Admin\AppData\Local\Temp\virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4948
      • C:\Users\Admin\AppData\Local\Temp\virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.exe
        "C:\Users\Admin\AppData\Local\Temp\virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1072
    • C:\Users\Admin\AppData\Local\Temp\virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.exe
      "C:\Users\Admin\AppData\Local\Temp\virussign.com_baf34deb155ee489aa424c3f4bfc7ffd.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:3740

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        american cumshot sperm girls .zip.exe
        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\american cumshot sperm girls .zip.exe
        • Size 901KB
        • SHA256 36909ac72cdd0b79c05068f04525cd922333f47c6546e98dc9ea004d54069cb1
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/932-0-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/932-190-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/1072-13-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/1072-196-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/3740-12-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/3740-195-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/4948-11-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/4948-192-0x0000000000400000-0x0000000000420000-memory.dmp
        Download