Analysis

  • max time kernel
    93s
  • max time network
    128s
  • 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 01:17

General

  • Target

    53133ce2d73710b58cd02589af7d3dd4fb78299fccac64d1126f55e91b4c22fc.exe

  • Size

    2.2MB

  • MD5

    8a6df58417c4f52c21d3f1b08a03db59

  • SHA1

    e420d3cc071ad7e4a6faeccb0fba6a72872770f8

  • SHA256

    53133ce2d73710b58cd02589af7d3dd4fb78299fccac64d1126f55e91b4c22fc

  • SHA512

    d2c9e26d041045ed584f787bd08d7ffb081759ef74464d3fb609f04535fe7616256c15500c1017375eb45bba53810d3d6bb2ff92e658e7ce0dc4e74dae9c272a

  • SSDEEP

    49152:qpjNvr9ySAOmw49HHO+SASagXkJr4MDkUwm:qpjNp7p49HH8n5A

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 13 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • 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.

  • 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\53133ce2d73710b58cd02589af7d3dd4fb78299fccac64d1126f55e91b4c22fc.exe
    "C:\Users\Admin\AppData\Local\Temp\53133ce2d73710b58cd02589af7d3dd4fb78299fccac64d1126f55e91b4c22fc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\AppData\Local\Temp\kat4C3B.tmp
      C:\Users\Admin\AppData\Local\Temp\kat4C3B.tmp
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1740
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4C3B.tmp" & rd /s /q "C:\ProgramData\HCAEHJJKFCAA" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5012
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:5068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\kat4C3B.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/1668-9-0x0000000000400000-0x0000000000635000-memory.dmp

    Filesize

    2.2MB

  • memory/1668-2-0x0000000004080000-0x0000000004190000-memory.dmp

    Filesize

    1.1MB

  • memory/1668-0-0x0000000002290000-0x0000000002291000-memory.dmp

    Filesize

    4KB

  • memory/1740-23-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-10-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-4-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-22-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-8-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-25-0x00000000200E0000-0x000000002033F000-memory.dmp

    Filesize

    2.4MB

  • memory/1740-40-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-41-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-57-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-58-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-69-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-70-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1740-73-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB