Analysis

  • max time kernel
    147s
  • max time network
    154s
  • 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 11:06

General

  • Target

    38fbd92abfd60fad7062510f0a3020609a27453f3a3cee298b2674353a1a2958.exe

  • Size

    2.2MB

  • MD5

    46fd9fa681b0a5f44de3e4878a0a4b22

  • SHA1

    e6373b9e21482b26e0de7f8ebcdca3bbd4b7102f

  • SHA256

    38fbd92abfd60fad7062510f0a3020609a27453f3a3cee298b2674353a1a2958

  • SHA512

    98845e7bd65519ceb7556a3e08acfba0aa02231128a81e4f57490627b0a29b199c27d825bd8937d1b9f5e9d32eb46bcc555db469a8c759a1b47e6041e4d6e307

  • SSDEEP

    49152:qpjNvr9ySAOmw4VHHO+SASagXkJr4MDkUwm:qpjNp7p4VHH8n5A

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.

  • 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\38fbd92abfd60fad7062510f0a3020609a27453f3a3cee298b2674353a1a2958.exe
    "C:\Users\Admin\AppData\Local\Temp\38fbd92abfd60fad7062510f0a3020609a27453f3a3cee298b2674353a1a2958.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4428
    • C:\Users\Admin\AppData\Local\Temp\kat5AE1.tmp
      C:\Users\Admin\AppData\Local\Temp\kat5AE1.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1892

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat5AE1.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/1892-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1892-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1892-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1892-24-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1892-25-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1892-26-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1892-28-0x000000002F6B0000-0x000000002F90F000-memory.dmp

    Filesize

    2.4MB

  • memory/1892-36-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1892-37-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4428-1-0x0000000002B60000-0x0000000002C70000-memory.dmp

    Filesize

    1.1MB

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

    Filesize

    2.2MB

  • memory/4428-0-0x0000000002390000-0x0000000002391000-memory.dmp

    Filesize

    4KB