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Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    25/01/2025, 01:20

General

  • Target

    cd7f5c4f492d5d2e9fbf4a91de8a6e038d177a2ef2bcc916ab9ccc5f996421b2.exe

  • Size

    1.7MB

  • MD5

    9f930d4b2cecf249e5f18e18e3928c9f

  • SHA1

    94724f567e44b85847c8a39840a8a898904f1b8d

  • SHA256

    cd7f5c4f492d5d2e9fbf4a91de8a6e038d177a2ef2bcc916ab9ccc5f996421b2

  • SHA512

    091482a3475b76f1591341f3b121b8ff142ab33e62935e513ae2e8a0cc6308e9ebcc259567818cf6b78a5e79e68efaffa110eecac125e88a1935ffbdcd37c91e

  • SSDEEP

    24576:N8DrG2Mbo6t2p6ZENcSmPUaqppw0sQ+Jh4Kx2YZ0Hn8Wpky9RmsTHVzKVXNdg0:Nf/c6t1Z7SmPzqpdw4q2eWNPV2Xbg

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\cd7f5c4f492d5d2e9fbf4a91de8a6e038d177a2ef2bcc916ab9ccc5f996421b2.exe
    "C:\Users\Admin\AppData\Local\Temp\cd7f5c4f492d5d2e9fbf4a91de8a6e038d177a2ef2bcc916ab9ccc5f996421b2.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:2284
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2284 -s 928
      2⤵
      • Program crash
      PID:2692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2284-0-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-1-0x0000000077670000-0x0000000077672000-memory.dmp

    Filesize

    8KB

  • memory/2284-2-0x00000000000A1000-0x00000000000B8000-memory.dmp

    Filesize

    92KB

  • memory/2284-3-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-4-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-5-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-6-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-7-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-8-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-9-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-10-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB

  • memory/2284-11-0x00000000000A0000-0x000000000072F000-memory.dmp

    Filesize

    6.6MB