Analysis

  • max time kernel
    144s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    29-06-2024 02:51

General

  • Target

    Setup.exe

  • Size

    707.9MB

  • MD5

    b25431a1b7b821eef6f77698c18fabb7

  • SHA1

    8986dac902bc4827925550dab54d522c9d508d50

  • SHA256

    b81deb9f7a113389c170b54921cd8ec33216e7819b91b3a413e2ee79ad592434

  • SHA512

    474e6f1ad5eb02557f3046e6f23f176bca72248617a2b6c4b9378ac18b72e32175a8976e3e8d106c454d12b946e920aa1048e374b701c218f87df1d335d15f27

  • SSDEEP

    196608:P/tv60Dx802nynypt/G0o55XGyPkqPVGEt3eaie54JngocFYKAAPIVelZ3wTVCZU:tBx802nygh6WwZjeaF549X

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

Version

10.1

Botnet

bd7a7ef85507e39998176b88b253bdb9

C2

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

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 5 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Checks processor information in registry 2 TTPs 1 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 behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1692
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\SysWOW64\netsh.exe
      2⤵
      • Event Triggered Execution: Netsh Helper DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Users\Admin\AppData\Local\Temp\coml.au3
        C:\Users\Admin\AppData\Local\Temp\coml.au3
        3⤵
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2260
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\coml.au3" & rd /s /q "C:\ProgramData\KFCGDBAKKKFB" & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1320
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 10
            5⤵
            • Delays execution with timeout.exe
            PID:1680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\c18cdc02

    Filesize

    6.8MB

    MD5

    957edcb00ce0b522499f6c799ea11053

    SHA1

    b1c91d93701d206820e45118e0df50d34790d27d

    SHA256

    e4456eea3e2fca53bc2a06fd247eba74bf668c39069d5c821d082ef7dfa03f5d

    SHA512

    167cb1c01f28bc40f85d0d8f895346d147a286811550142ebdf659cc4ba92f015d4def386d58adf4c48b1946ee31ddd8dcbef50ba09533889e9ad161c9867eb6

  • C:\Users\Admin\AppData\Local\Temp\c5b29c33

    Filesize

    6.8MB

    MD5

    9722acf580727032fc0ee7e15405cb81

    SHA1

    e1c22a06014956a1c4318e30e1e2f06204a2df0c

    SHA256

    d21a368256d953ef7bb8e2365bc0609af23b511ef4f135e83a79c7515a1fc3b0

    SHA512

    ef850b27d74da5598bffc4c989ee9ff14b4df680c960acb9505eaba81aee124c5be067b67626ba92b96b0ddba202d7498d7305e62e409d33e66a326b91f3728e

  • C:\Users\Admin\AppData\Local\Temp\coml.au3

    Filesize

    872KB

    MD5

    c56b5f0201a3b3de53e561fe76912bfd

    SHA1

    2a4062e10a5de813f5688221dbeb3f3ff33eb417

    SHA256

    237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

    SHA512

    195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

  • memory/1364-12-0x00007FFDB8E20000-0x00007FFDB9029000-memory.dmp

    Filesize

    2.0MB

  • memory/1364-19-0x0000000073AA1000-0x0000000073AAF000-memory.dmp

    Filesize

    56KB

  • memory/1364-15-0x0000000073AAE000-0x0000000073AB0000-memory.dmp

    Filesize

    8KB

  • memory/1364-16-0x0000000073AA1000-0x0000000073AAF000-memory.dmp

    Filesize

    56KB

  • memory/1692-8-0x00007FFDA9A60000-0x00007FFDA9BDA000-memory.dmp

    Filesize

    1.5MB

  • memory/1692-9-0x00007FFDA9A60000-0x00007FFDA9BDA000-memory.dmp

    Filesize

    1.5MB

  • memory/1692-0-0x00007FF7B0F00000-0x00007FF7B16DB000-memory.dmp

    Filesize

    7.9MB

  • memory/1692-7-0x00007FFDA9A78000-0x00007FFDA9A79000-memory.dmp

    Filesize

    4KB

  • memory/1692-6-0x00007FFDA9A60000-0x00007FFDA9BDA000-memory.dmp

    Filesize

    1.5MB

  • memory/2260-21-0x0000000001600000-0x0000000001D4B000-memory.dmp

    Filesize

    7.3MB

  • memory/2260-23-0x00007FFDB8E20000-0x00007FFDB9029000-memory.dmp

    Filesize

    2.0MB

  • memory/2260-24-0x0000000001600000-0x0000000001D4B000-memory.dmp

    Filesize

    7.3MB

  • memory/2260-25-0x0000000001600000-0x0000000001D4B000-memory.dmp

    Filesize

    7.3MB

  • memory/2260-26-0x0000000001600000-0x0000000001D4B000-memory.dmp

    Filesize

    7.3MB

  • memory/2260-27-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2260-39-0x0000000001600000-0x0000000001D4B000-memory.dmp

    Filesize

    7.3MB