Analysis

  • max time kernel
    89s
  • 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 06:53

General

  • Target

    3916d1536994faa023cd09964cdea305e807f608e59ff293a984fe47c4d655f6.exe

  • Size

    2.2MB

  • MD5

    d585054e29addfe245e146dfc2dbd77d

  • SHA1

    cc8acdf721aca4bc280bf0bb71dbd8113ae60e92

  • SHA256

    3916d1536994faa023cd09964cdea305e807f608e59ff293a984fe47c4d655f6

  • SHA512

    7328bad3c55c7b35522e900eceb0e53da48025062f0f552384915b7fe6513b3b0d4d52be040e92f02123438d5b88c4f5ce5dab180fbb5aac5e442685a08a21b6

  • SSDEEP

    49152:qpjNvr9ySAOmw4FHHO+SASagXkJr4MDkUwm:qpjNp7p4FHH8n5A

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 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 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\3916d1536994faa023cd09964cdea305e807f608e59ff293a984fe47c4d655f6.exe
    "C:\Users\Admin\AppData\Local\Temp\3916d1536994faa023cd09964cdea305e807f608e59ff293a984fe47c4d655f6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2556
    • C:\Users\Admin\AppData\Local\Temp\kat6503.tmp
      C:\Users\Admin\AppData\Local\Temp\kat6503.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:4736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat6503.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/2556-0-0x0000000002390000-0x0000000002391000-memory.dmp

    Filesize

    4KB

  • memory/2556-1-0x0000000002B30000-0x0000000002C40000-memory.dmp

    Filesize

    1.1MB

  • memory/2556-9-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB

  • memory/4736-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4736-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4736-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4736-24-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4736-25-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4736-27-0x000000002D160000-0x000000002D3BF000-memory.dmp

    Filesize

    2.4MB

  • memory/4736-35-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/4736-36-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB