Analysis

  • max time kernel
    51s
  • max time network
    49s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/06/2024, 03:45

General

  • Target
    file.exe
  • Size 4.0MB
  • Sample240614-ea3n2stgka
  • SHA256 b26b1074a9b97f7f8be564b70f50ee965df6b8773695ba25d72c2638d3c90586
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • stealc

rc4.plain

Extracted

Family
  • vidar

C2
  • https://88.99.127.107

  • https://t.me/memve4erin

  • https://steamcommunity.com/profiles/76561199699680841

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

  • Detect Vidar Stealer 6 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4808
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1948
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" & rd /s /q "C:\ProgramData\GHDHDBAECGCA" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:208
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:4084

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1948-69-0x0000000000400000-0x0000000000648000-memory.dmp

        memory/1948-78-0x0000000000400000-0x0000000000648000-memory.dmp

        memory/1948-76-0x0000000000400000-0x0000000000648000-memory.dmp

        memory/1948-75-0x0000000000400000-0x0000000000648000-memory.dmp

        memory/1948-73-0x0000000000400000-0x0000000000648000-memory.dmp

        memory/1948-67-0x0000000000400000-0x0000000000648000-memory.dmp

        memory/4808-40-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-30-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-66-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-64-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-6-0x00000000053B0000-0x00000000053CC000-memory.dmp

        memory/4808-71-0x0000000075350000-0x0000000075B00000-memory.dmp

        memory/4808-5-0x0000000005690000-0x000000000578A000-memory.dmp

        memory/4808-62-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-58-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-54-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-52-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-50-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-48-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-46-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-44-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-42-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-0-0x000000007535E000-0x000000007535F000-memory.dmp

        memory/4808-38-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-36-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-34-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-32-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-61-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-22-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-20-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-18-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-16-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-10-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-8-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-7-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-56-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-28-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-26-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-24-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-14-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-12-0x00000000053B0000-0x00000000053C5000-memory.dmp

        memory/4808-4-0x0000000075350000-0x0000000075B00000-memory.dmp

        memory/4808-72-0x0000000075350000-0x0000000075B00000-memory.dmp

        memory/4808-74-0x0000000075350000-0x0000000075B00000-memory.dmp

        memory/4808-3-0x0000000005550000-0x0000000005694000-memory.dmp

        memory/4808-2-0x00000000054B0000-0x000000000554C000-memory.dmp

        memory/4808-1-0x0000000000670000-0x0000000000A6C000-memory.dmp