Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 04:49

General

  • Target

    abaefa482e3cd3b2a498a83530a0418e32078e81d975c69b13dfd8dd12213b5a.exe

  • Size

    2.0MB

  • MD5

    d92c985ddae73d2e1407ca76e682f2fa

  • SHA1

    8a04a22fc7d7536675af4ae5cdfbba12612751d0

  • SHA256

    abaefa482e3cd3b2a498a83530a0418e32078e81d975c69b13dfd8dd12213b5a

  • SHA512

    9e83c8e1b5cf7e3ac2d6fb342923f17d15ca6677301ae8ea5fe8a4201a68b37951bc17befc4e06b3fbfa376204b3c1c2d8ddcd2a07173a9bf47971aea0cc7992

  • SSDEEP

    49152:IFno/jfQJtTF+TxMoxc1TU+j+dAzGkiT:IFno/jotIuoITsdZT

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199686524322

https://t.me/k0mono

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Safari/605.1.15 Ddg/17.4.1

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\abaefa482e3cd3b2a498a83530a0418e32078e81d975c69b13dfd8dd12213b5a.exe
    "C:\Users\Admin\AppData\Local\Temp\abaefa482e3cd3b2a498a83530a0418e32078e81d975c69b13dfd8dd12213b5a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1416
    • C:\Users\Admin\AppData\Local\Temp\kat593C.tmp
      C:\Users\Admin\AppData\Local\Temp\kat593C.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:4484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat593C.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/1416-0-0x00000000007E0000-0x00000000007E1000-memory.dmp

    Filesize

    4KB

  • memory/1416-1-0x0000000004070000-0x00000000041B9000-memory.dmp

    Filesize

    1.3MB

  • memory/1416-9-0x0000000000400000-0x0000000000602000-memory.dmp

    Filesize

    2.0MB

  • memory/4484-8-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

  • memory/4484-10-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

  • memory/4484-4-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

  • memory/4484-14-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

  • memory/4484-15-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

  • memory/4484-17-0x000000001DC50000-0x000000001DEAF000-memory.dmp

    Filesize

    2.4MB

  • memory/4484-32-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB

  • memory/4484-33-0x0000000000400000-0x0000000000646000-memory.dmp

    Filesize

    2.3MB