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Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2025, 12:01

General

  • Target

    1c5ef711f1627f5d24c27c67995235c9a1477e1907f8142b88acbd7bce728456N.exe

  • Size

    1.7MB

  • MD5

    78f93fd2c3ac6e822275d54d0d9c7730

  • SHA1

    42db228f3b3d545a944913ea6d9bb83f16e932ee

  • SHA256

    1c5ef711f1627f5d24c27c67995235c9a1477e1907f8142b88acbd7bce728456

  • SHA512

    0ba4c16e926cea7945053bee23bad6cea317735c8281cd3d8b79d73a58838e4977feaaba3543f2cc24f0ba88587852f88c5f1fea04a8736e1d6d81fc76fcdc0e

  • SSDEEP

    49152:nJx1j9RIu7DBd9i3eoiTReDkzj0z8JDwNPpcuy:nJz9RB3R1TRtzj0tPp

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\1c5ef711f1627f5d24c27c67995235c9a1477e1907f8142b88acbd7bce728456N.exe
    "C:\Users\Admin\AppData\Local\Temp\1c5ef711f1627f5d24c27c67995235c9a1477e1907f8142b88acbd7bce728456N.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:1032
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1032 -s 1504
      2⤵
      • Program crash
      PID:3592
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 1032 -ip 1032
    1⤵
      PID:1380

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1032-0-0x0000000000E80000-0x000000000150A000-memory.dmp

      Filesize

      6.5MB

    • memory/1032-1-0x0000000077894000-0x0000000077896000-memory.dmp

      Filesize

      8KB

    • memory/1032-2-0x0000000000E81000-0x0000000000E98000-memory.dmp

      Filesize

      92KB

    • memory/1032-3-0x0000000000E80000-0x000000000150A000-memory.dmp

      Filesize

      6.5MB

    • memory/1032-4-0x0000000000E80000-0x000000000150A000-memory.dmp

      Filesize

      6.5MB

    • memory/1032-5-0x0000000000E80000-0x000000000150A000-memory.dmp

      Filesize

      6.5MB

    • memory/1032-6-0x0000000000E80000-0x000000000150A000-memory.dmp

      Filesize

      6.5MB

    • memory/1032-7-0x0000000000E80000-0x000000000150A000-memory.dmp

      Filesize

      6.5MB

    • memory/1032-9-0x0000000000E80000-0x000000000150A000-memory.dmp

      Filesize

      6.5MB