Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    07-06-2024 06:40

General

  • Target

    eddccc8d0b53589906defe730a8f30a2ccdc0da0b3c72d3eaef1c9d55687cbcc.exe

  • Size

    2.9MB

  • MD5

    340763ec7471dbb7ea5f994b93ad9edc

  • SHA1

    e8c365c0c3220a71406159d00f90a7910802d869

  • SHA256

    eddccc8d0b53589906defe730a8f30a2ccdc0da0b3c72d3eaef1c9d55687cbcc

  • SHA512

    a405218be68b64fd876c2c0019693113626624661e001109dd290ade89b1cbc11d57970f143e759dd711181679f489ad93ebff5f51062e2d2d40ce15d14edca7

  • SSDEEP

    49152:rtpSxptE1AKnChMS4cdR/z4+UVi4e9Crn:r/4nE1dCGKxx4e9Cb

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

  • Detect Vidar Stealer 8 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 user/profile data of web browsers 2 TTPs

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

  • 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
  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eddccc8d0b53589906defe730a8f30a2ccdc0da0b3c72d3eaef1c9d55687cbcc.exe
    "C:\Users\Admin\AppData\Local\Temp\eddccc8d0b53589906defe730a8f30a2ccdc0da0b3c72d3eaef1c9d55687cbcc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4908
    • C:\Users\Admin\AppData\Local\Temp\kat9710.tmp
      C:\Users\Admin\AppData\Local\Temp\kat9710.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:5012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat9710.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/4908-0-0x0000000002450000-0x0000000002451000-memory.dmp

    Filesize

    4KB

  • memory/4908-1-0x0000000002C50000-0x0000000002DB6000-memory.dmp

    Filesize

    1.4MB

  • memory/4908-9-0x0000000000400000-0x00000000006EF000-memory.dmp

    Filesize

    2.9MB

  • memory/5012-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5012-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5012-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5012-13-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5012-14-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5012-16-0x000000001B7E0000-0x000000001BA3F000-memory.dmp

    Filesize

    2.4MB

  • memory/5012-31-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5012-35-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB