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Analysis

  • max time kernel
    91s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2025, 15:00

General

  • Target

    499f55e7155e344a33f4227ac91f7f83ace22c3f3c17bd3c52b6366e0fd16aca.exe

  • Size

    1.7MB

  • MD5

    fade6c1f407b83d136fec862a0f93b25

  • SHA1

    1766558368315c0ccedb685771a2f570c6af2f66

  • SHA256

    499f55e7155e344a33f4227ac91f7f83ace22c3f3c17bd3c52b6366e0fd16aca

  • SHA512

    38330e0d7b0eaf693225096f37f94f4fd7ae7f32e70fddfc8d2a7b949c94a6fc328defbe38ed07275df50718e22356df5757d9bfed1c340137906ed4bad97239

  • SSDEEP

    49152:IzEUSZV5t8jhbmd3GgFP/3snym0P5nXjAlu4T:IzEr3/GEtWyPP5w

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\499f55e7155e344a33f4227ac91f7f83ace22c3f3c17bd3c52b6366e0fd16aca.exe
    "C:\Users\Admin\AppData\Local\Temp\499f55e7155e344a33f4227ac91f7f83ace22c3f3c17bd3c52b6366e0fd16aca.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:3524
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3524 -s 1472
      2⤵
      • Program crash
      PID:1744
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3524 -ip 3524
    1⤵
      PID:1828

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3524-0-0x0000000000C50000-0x00000000012F5000-memory.dmp

      Filesize

      6.6MB

    • memory/3524-1-0x0000000077054000-0x0000000077056000-memory.dmp

      Filesize

      8KB

    • memory/3524-2-0x0000000000C51000-0x0000000000C68000-memory.dmp

      Filesize

      92KB

    • memory/3524-3-0x0000000000C50000-0x00000000012F5000-memory.dmp

      Filesize

      6.6MB

    • memory/3524-4-0x0000000000C50000-0x00000000012F5000-memory.dmp

      Filesize

      6.6MB

    • memory/3524-5-0x0000000000C50000-0x00000000012F5000-memory.dmp

      Filesize

      6.6MB

    • memory/3524-6-0x0000000000C50000-0x00000000012F5000-memory.dmp

      Filesize

      6.6MB

    • memory/3524-7-0x0000000000C50000-0x00000000012F5000-memory.dmp

      Filesize

      6.6MB

    • memory/3524-8-0x0000000000C50000-0x00000000012F5000-memory.dmp

      Filesize

      6.6MB