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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2025, 16:43

General

  • Target

    5a902220abc9b224b7d22c01cd841b5050f520acfdbcab8ce09242f99931085f.exe

  • Size

    1.7MB

  • MD5

    cc2fb762ab17680d90294166e6ab21d3

  • SHA1

    b05d3dacb8599d428cd62ae7086f471578176880

  • SHA256

    5a902220abc9b224b7d22c01cd841b5050f520acfdbcab8ce09242f99931085f

  • SHA512

    9651c005b4503892140b8d621d0a9bb5984e1de905aaf2d10d9448e293a023029ed1a9fa8f2a267bf0d1c24a58dbde107eb133da4003f95ce516003c149ece77

  • SSDEEP

    49152:4PxBTWZa8KnuhwApJr1dYvo/GxY6uL/TV:Ixztnc4vo/7L

Malware Config

Extracted

Family

stealc

Botnet

brat

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Stealc family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • 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 NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a902220abc9b224b7d22c01cd841b5050f520acfdbcab8ce09242f99931085f.exe
    "C:\Users\Admin\AppData\Local\Temp\5a902220abc9b224b7d22c01cd841b5050f520acfdbcab8ce09242f99931085f.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:3660
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3660 -s 1492
      2⤵
      • Program crash
      PID:3588
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3660 -ip 3660
    1⤵
      PID:4012

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3660-0-0x0000000000940000-0x0000000000FE1000-memory.dmp

      Filesize

      6.6MB

    • memory/3660-1-0x0000000077874000-0x0000000077876000-memory.dmp

      Filesize

      8KB

    • memory/3660-2-0x0000000000941000-0x0000000000958000-memory.dmp

      Filesize

      92KB

    • memory/3660-3-0x0000000000940000-0x0000000000FE1000-memory.dmp

      Filesize

      6.6MB

    • memory/3660-4-0x0000000000940000-0x0000000000FE1000-memory.dmp

      Filesize

      6.6MB

    • memory/3660-5-0x0000000000940000-0x0000000000FE1000-memory.dmp

      Filesize

      6.6MB

    • memory/3660-6-0x0000000000940000-0x0000000000FE1000-memory.dmp

      Filesize

      6.6MB

    • memory/3660-7-0x0000000000940000-0x0000000000FE1000-memory.dmp

      Filesize

      6.6MB

    • memory/3660-8-0x0000000000940000-0x0000000000FE1000-memory.dmp

      Filesize

      6.6MB