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Analysis

  • max time kernel
    133s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/06/2024, 13:36

General

  • Target

    1438267716d7a375be8003ad47b20e7db16a408d7ad37d7d097a73832905c414.exe

  • Size

    2.2MB

  • MD5

    7bec706a806587e3d642d64483bc2fd6

  • SHA1

    32ea2af87b0124d81a99a2b36fb1389ac0de2bb0

  • SHA256

    1438267716d7a375be8003ad47b20e7db16a408d7ad37d7d097a73832905c414

  • SHA512

    b3d592830a3611843535ff69870d89c1ed93b40da28877e55d1bf1b5219becf7b2d4cc091fda78b541ecba1fab387c75b6a692b2b235b11905fe6ff58e015fce

  • SSDEEP

    49152:qpjNvr9ySAOmw4BHHO+SASagXkJr4MDkUwm:qpjNp7p4BHH8n5A

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\1438267716d7a375be8003ad47b20e7db16a408d7ad37d7d097a73832905c414.exe
    "C:\Users\Admin\AppData\Local\Temp\1438267716d7a375be8003ad47b20e7db16a408d7ad37d7d097a73832905c414.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2364
    • C:\Users\Admin\AppData\Local\Temp\kat3B63.tmp
      C:\Users\Admin\AppData\Local\Temp\kat3B63.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:2556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat3B63.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/2364-0-0x00000000008D0000-0x00000000008D1000-memory.dmp

    Filesize

    4KB

  • memory/2364-2-0x0000000002A40000-0x0000000002B50000-memory.dmp

    Filesize

    1.1MB

  • memory/2364-10-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB

  • memory/2556-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2556-9-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2556-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2556-22-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2556-23-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2556-25-0x0000000024C80000-0x0000000024EDF000-memory.dmp

    Filesize

    2.4MB

  • memory/2556-33-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2556-34-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB