Analysis

  • max time kernel
    90s
  • max time network
    125s
  • 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 03:00

General

  • Target

    9f80d8dc87ee7c8708bbaec571f5c73333565987b53a14cc0d80b5ab23b76fec.exe

  • Size

    2.2MB

  • MD5

    75fb5b0b682cb9e87c19da1688ae266e

  • SHA1

    9f12e2279efe96934df0a0d0a769c955b900980a

  • SHA256

    9f80d8dc87ee7c8708bbaec571f5c73333565987b53a14cc0d80b5ab23b76fec

  • SHA512

    e194a130bd5e449aaad53177ecb614968606fd6d17b86d7444ca11f061bc0f0831b9b4c9f887689c167a6f67fbdfa5989333f6d0363f2ef8ebd80961a8135cba

  • 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 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\9f80d8dc87ee7c8708bbaec571f5c73333565987b53a14cc0d80b5ab23b76fec.exe
    "C:\Users\Admin\AppData\Local\Temp\9f80d8dc87ee7c8708bbaec571f5c73333565987b53a14cc0d80b5ab23b76fec.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1420
    • C:\Users\Admin\AppData\Local\Temp\kat51D9.tmp
      C:\Users\Admin\AppData\Local\Temp\kat51D9.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:576
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat51D9.tmp" & rd /s /q "C:\ProgramData\KJDGDGDHDGDB" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4132
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:2520

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat51D9.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/576-35-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-76-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-27-0x000000002F740000-0x000000002F99F000-memory.dmp

    Filesize

    2.4MB

  • memory/576-75-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-9-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-24-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-25-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-74-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-44-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-36-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-45-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-61-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-62-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/576-73-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1420-1-0x00000000040B0000-0x00000000041C0000-memory.dmp

    Filesize

    1.1MB

  • memory/1420-10-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB

  • memory/1420-0-0x0000000002490000-0x0000000002491000-memory.dmp

    Filesize

    4KB