Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25/06/2024, 04:08

General

  • Target

    e79b5c3bd34c9a760695a543fde2455d4c21187705cb0f6bceb11e64a9705673.exe

  • Size

    2.1MB

  • MD5

    f39dcdd9393660d9b67580aac9c7561f

  • SHA1

    d489da27d4e8d71210fc098a7e0071f364739e60

  • SHA256

    e79b5c3bd34c9a760695a543fde2455d4c21187705cb0f6bceb11e64a9705673

  • SHA512

    ca77b538f47a75e2616700cc6b51855ad8c0e2739fef2158b50fd6799d35a7c98a3271bbc883c6d67136b43782badb251a4f4f331acc112edcf91b8c653a44e6

  • SSDEEP

    24576:cC/gyrgOo5VvmUfq+Zc1Fsuqf9sPUfMxVVtes12FxwojKr98YGeGGHzqqikY+rPN:c3xbZcjHPUkxVVChjHZQHzqZ+rPlV

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 16 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 data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e79b5c3bd34c9a760695a543fde2455d4c21187705cb0f6bceb11e64a9705673.exe
    "C:\Users\Admin\AppData\Local\Temp\e79b5c3bd34c9a760695a543fde2455d4c21187705cb0f6bceb11e64a9705673.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4176
    • C:\Users\Admin\AppData\Local\Temp\kat5E4C.tmp
      C:\Users\Admin\AppData\Local\Temp\kat5E4C.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5E4C.tmp" & rd /s /q "C:\ProgramData\GHJDBAKEHDHD" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3576
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:1800

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\kat5E4C.tmp

          Filesize

          861KB

          MD5

          66064dbdb70a5eb15ebf3bf65aba254b

          SHA1

          0284fd320f99f62aca800fb1251eff4c31ec4ed7

          SHA256

          6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

          SHA512

          b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

        • memory/2964-35-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-61-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-8-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-78-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-10-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-75-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-24-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-25-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-4-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-36-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-74-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-44-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-45-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-27-0x000000002F700000-0x000000002F95F000-memory.dmp

          Filesize

          2.4MB

        • memory/2964-62-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/2964-73-0x0000000000400000-0x0000000000648000-memory.dmp

          Filesize

          2.3MB

        • memory/4176-1-0x0000000002C90000-0x0000000002DA0000-memory.dmp

          Filesize

          1.1MB

        • memory/4176-9-0x0000000000400000-0x0000000000624000-memory.dmp

          Filesize

          2.1MB

        • memory/4176-0-0x00000000024D0000-0x00000000024D1000-memory.dmp

          Filesize

          4KB