Analysis

  • max time kernel
    40s
  • max time network
    50s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-06-2024 07:12

General

  • Target

    67cc7f190451b5db4126bfc089ae5aa9f073ab3b9659729bed04fd42c8106e99.exe

  • Size

    2.2MB

  • MD5

    38867c386c1a7ec5b668daefb6056e17

  • SHA1

    e018178ea04dac16be65f4a0fa42c5b95d587d3d

  • SHA256

    67cc7f190451b5db4126bfc089ae5aa9f073ab3b9659729bed04fd42c8106e99

  • SHA512

    26e3354af53fca63b510038b32be84b29dca046ccbf7d2bc2adb9eb64a478b680e4cc7ef44253b73a1c5ccffaf48fed776256ec406c92fcb0118c67207e50136

  • SSDEEP

    49152:qpjNvr9ySAOmw4RHHO+SASagXkJr4MDkUwm:qpjNp7p4RHH8n5A

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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\67cc7f190451b5db4126bfc089ae5aa9f073ab3b9659729bed04fd42c8106e99.exe
    "C:\Users\Admin\AppData\Local\Temp\67cc7f190451b5db4126bfc089ae5aa9f073ab3b9659729bed04fd42c8106e99.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
      C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5000
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp" & rd /s /q "C:\ProgramData\EHJJKFCBGIDG" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5016
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:644

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat4F1A.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/1840-0-0x0000000002490000-0x0000000002491000-memory.dmp

    Filesize

    4KB

  • memory/1840-1-0x0000000004000000-0x0000000004110000-memory.dmp

    Filesize

    1.1MB

  • memory/1840-9-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB

  • memory/5000-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5000-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5000-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5000-11-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5000-12-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5000-13-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5000-14-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/5000-17-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB