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Overview

overview

10

Static

static

3

ac5be0e128...c1.exe

windows7-x64

3

ac5be0e128...c1.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 01:34

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General

  • Target

    ac5be0e12802839366243997af6620e86ae4540a9bd888e1ac140323400095c1.exe

  • Size

    422KB

  • MD5

    834ea699f82aa32660cb329a96986165

  • SHA1

    e8a5bf4ef04ac4dfaed563305c2c98223eabe46f

  • SHA256

    ac5be0e12802839366243997af6620e86ae4540a9bd888e1ac140323400095c1

  • SHA512

    3101a96ceedc1eda1090a34d6ac6aa26155958397f62bd6fbe02dd147010baf837ce406ce36c6a48f9134431a91bd5b722558aac64a4e9f9ffa92052bd9a27db

  • SSDEEP

    12288:bxIhIkRoFQkVoVSInyeGrCwYP2CGS0uSq8:2IroUUH0CJ2CGo

Score
10/10
stealcvidardiscoveryspywarestealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 11 IoCs
    stealer
  • Stealc

    Stealc is an infostealer written in C++.

    stealerstealc
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • Detect binaries embedding considerable number of MFA browser extension IDs. 8 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 8 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 11 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 8 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 11 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 11 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac5be0e12802839366243997af6620e86ae4540a9bd888e1ac140323400095c1.exe
    "C:\Users\Admin\AppData\Local\Temp\ac5be0e12802839366243997af6620e86ae4540a9bd888e1ac140323400095c1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks computer location settings
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2204
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DGHIDAFCGIEH" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1336
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:552

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1716-0-0x0000000001150000-0x0000000001151000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1716-2-0x0000000001150000-0x0000000001151000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2204-1-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-4-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-6-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-10-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-11-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-13-0x000000001BA50000-0x000000001BCAF000-memory.dmp

    Filesize

    2.4MB

    Download

  • memory/2204-28-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-29-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-45-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-46-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-57-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download

  • memory/2204-58-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

    Download