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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/01/2025, 05:16

General

  • Target

    495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe

  • Size

    1.7MB

  • MD5

    bf8c133b81c52a501d6e0add51f14791

  • SHA1

    b1446a5b9e7532a5029bfa5fc342f29e1823ab35

  • SHA256

    495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89

  • SHA512

    23077fcb800fa53d1272308e3215c3371cb618048e4425d53ee35cbee580d2bb2f2e380ff4139ec1fdbfc3895a5314c7dbf2723821abb8909617bfa305043837

  • SSDEEP

    49152:zr3w/hRjankGerqGU7onLgjarilEx1lheD6j4:zEhlIRes7Mri+DlID68

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 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.exe
    "C:\Users\Admin\AppData\Local\Temp\495523cd7b27c3be087a5c0e77aafaf0aca33bd54ec5168d0ebb341fa9b25f89.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
    • Suspicious use of WriteProcessMemory
    PID:2400
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2400 -s 928
      2⤵
      • Program crash
      PID:2396

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2400-0-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-1-0x00000000779F0000-0x00000000779F2000-memory.dmp

    Filesize

    8KB

  • memory/2400-2-0x0000000000961000-0x0000000000978000-memory.dmp

    Filesize

    92KB

  • memory/2400-3-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-4-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-5-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-6-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-7-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-8-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-9-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-10-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB

  • memory/2400-11-0x0000000000960000-0x0000000000FFC000-memory.dmp

    Filesize

    6.6MB