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Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    26/12/2024, 07:50

General

  • Target

    38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe

  • Size

    2.8MB

  • MD5

    ccd3d88f028bbaa1f9dde5ef92b59dc3

  • SHA1

    04b65468a65d99f003599e6dac235e386770438b

  • SHA256

    38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222

  • SHA512

    9f9494cdf7428892e5c9d0a0090c02a157d8f8ec96c92fb0936c4db2967fd593023c7a204a7165b0c9ea4fd46f48bb8bfb397bbbc9d3e5886dcdb171cd527e32

  • SSDEEP

    49152:9SzhYgT8JC0LJRqNPgPgLl8ndh2/q7yQrm/:9SzhYgAJC0LJcNP4elGdnr

Malware Config

Extracted

Family

stealc

Botnet

stok

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\38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.exe
    "C:\Users\Admin\AppData\Local\Temp\38520f832e97b80b58ae27bde2455a33195605049c4923e6b531cd95f087d222.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:2744
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2744 -s 932
      2⤵
      • Program crash
      PID:1788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2744-0-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-1-0x00000000772C0000-0x00000000772C2000-memory.dmp

    Filesize

    8KB

  • memory/2744-2-0x0000000000971000-0x0000000000988000-memory.dmp

    Filesize

    92KB

  • memory/2744-3-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-4-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-5-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-6-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-7-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-8-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-9-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-10-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB

  • memory/2744-11-0x0000000000970000-0x0000000000E69000-memory.dmp

    Filesize

    5.0MB