Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    29-06-2024 01:20

General

  • Target

    5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe

  • Size

    2.2MB

  • MD5

    9f3205479a5ff3acd9eafdb8eaa629e9

  • SHA1

    0db77b61300e8e3ea19c8de71a078bb853e5166d

  • SHA256

    5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e

  • SHA512

    adfd9e32fa17d358b5093bfdd9c257b20c8015303ced7b94e2acd00b407fd0e79d5bfa30d38272ebdc8564730f4316d0831833236a20d4daee815c288a04b065

  • 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 12 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Detects Windows executables referencing non-Windows User-Agents 11 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe
    "C:\Users\Admin\AppData\Local\Temp\5c483ed90d904d0d81967c91ac431a2c27228fd9562dd2f2e3f003644c59076e.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
      C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2068
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp" & rd /s /q "C:\ProgramData\HJDBFBKKJDHJ" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2988
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:2040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat1C66.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/2068-24-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-19-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-17-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-11-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-13-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-22-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-33-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-15-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-9-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-29-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-28-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-25-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-26-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2068-27-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/2940-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

    Filesize

    4KB

  • memory/2940-1-0x00000000021E0000-0x00000000022F0000-memory.dmp

    Filesize

    1.1MB

  • memory/2940-23-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB