Analysis

  • max time kernel
    92s
  • max time network
    127s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    29-06-2024 00:35

General

  • Target

    c5ed6a25605cff93edf4034838aa260675ba010d954559951768ae0147739231.exe

  • Size

    2.2MB

  • MD5

    a5c89870b75b372d645b1648abf6f844

  • SHA1

    56b439e256f99c71166e874a7e517f4f94ea155e

  • SHA256

    c5ed6a25605cff93edf4034838aa260675ba010d954559951768ae0147739231

  • SHA512

    1b55f06987a961b8ea42617bde5ff30a7eb44420d6667197781df5205b603c3fa01d8de7d097512e8e7f046e7cc916cca0116070f2301b89a6baf4230212498e

  • SSDEEP

    49152:qpjNvr9ySAOmw4pHHO+SASagXkJr4MDkUwm:qpjNp7p4pHH8n5A

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 16 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5ed6a25605cff93edf4034838aa260675ba010d954559951768ae0147739231.exe
    "C:\Users\Admin\AppData\Local\Temp\c5ed6a25605cff93edf4034838aa260675ba010d954559951768ae0147739231.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4428
    • C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
      C:\Users\Admin\AppData\Local\Temp\kat470B.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2364
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat470B.tmp" & rd /s /q "C:\ProgramData\FCGIJDBAFCBA" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2848
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:3140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat470B.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/2364-35-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-76-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-27-0x0000000022760000-0x00000000229BF000-memory.dmp

    Filesize

    2.4MB

  • memory/2364-75-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-74-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-24-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-25-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-44-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-36-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-45-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-61-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-62-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2364-73-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4428-2-0x0000000002A60000-0x0000000002B70000-memory.dmp

    Filesize

    1.1MB

  • memory/4428-9-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB

  • memory/4428-0-0x0000000002380000-0x0000000002381000-memory.dmp

    Filesize

    4KB