Analysis

  • max time kernel
    39s
  • max time network
    45s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/06/2024, 02:50

General

  • Target

    2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe

  • Size

    2.1MB

  • MD5

    2741b1690b3a1f114ed6ae25eb818bf4

  • SHA1

    1e0570c28bcaf408e23683371b12aca35a4845f7

  • SHA256

    2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d

  • SHA512

    490168edc1aa5cefe33b1693a1345b3d1d0ec898e9f0b8add5061841ebb0db788108576f7f0eacff8a7b934d8fa42afe1879a82d564714d846cf9d6e7c493907

  • SSDEEP

    24576:cC/gyrgOo5VvmUfq+Zc1Fsuqf9sDUfMxVVtes12FxwojKr98YGeGGHzqqikY+rPN:c3xbZcjHDUkxVVChjHZQHzqZ+rPlV

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

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 9 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Checks installed software on the system 1 TTPs

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

  • 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 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe
    "C:\Users\Admin\AppData\Local\Temp\2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:376
    • C:\Users\Admin\AppData\Local\Temp\kat66C8.tmp
      C:\Users\Admin\AppData\Local\Temp\kat66C8.tmp
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1696
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat66C8.tmp" & rd /s /q "C:\ProgramData\ECGDAAFIIJDA" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4844
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:1800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat66C8.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/376-0-0x00000000023C0000-0x00000000023C1000-memory.dmp

    Filesize

    4KB

  • memory/376-1-0x0000000004120000-0x0000000004230000-memory.dmp

    Filesize

    1.1MB

  • memory/376-9-0x0000000000400000-0x0000000000624000-memory.dmp

    Filesize

    2.1MB

  • memory/1696-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1696-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1696-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1696-11-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1696-12-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1696-13-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1696-14-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1696-15-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB