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Analysis

  • max time kernel
    127s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/07/2023, 12:42

General

  • Target

    53640549adeafc14bff28e22e.exe

  • Size

    750KB

  • MD5

    53640549adeafc14bff28e22e378b681

  • SHA1

    c46173128148a0fb90c7aa67553068035edc8d04

  • SHA256

    f8be822eb877bfb50b6d04449004f9778ed732b877c4f2975313b8559cf6e842

  • SHA512

    0c74669ac5fcc63f0579acd7a377bf286e5bb3b5e574efbc14e541471c87b46d88bc6e76e2bd974223a079944acda0a7a7f7ca829f2e2e8de0a88acc9653ff24

  • SSDEEP

    12288:VS/nqdGGwe4kVt7eKS9HvO1WVZ08yDgG:cSwGwNZKMeX

Malware Config

Extracted

Family

stealc

C2

http://45.150.65.128/bcbdd35a8286b150.php

Signatures

  • Detects Stealc stealer 4 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\53640549adeafc14bff28e22e.exe
    "C:\Users\Admin\AppData\Local\Temp\53640549adeafc14bff28e22e.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4548
    • C:\Users\Admin\AppData\Local\Temp\53640549adeafc14bff28e22e.exe
      "{path}"
      2⤵
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:4392

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/4392-142-0x0000000000400000-0x0000000000629000-memory.dmp

    Filesize

    2.2MB

  • memory/4392-147-0x0000000000400000-0x0000000000629000-memory.dmp

    Filesize

    2.2MB

  • memory/4392-146-0x0000000000400000-0x0000000000629000-memory.dmp

    Filesize

    2.2MB

  • memory/4392-145-0x0000000000400000-0x0000000000629000-memory.dmp

    Filesize

    2.2MB

  • memory/4548-136-0x0000000005300000-0x0000000005392000-memory.dmp

    Filesize

    584KB

  • memory/4548-138-0x0000000005210000-0x000000000521A000-memory.dmp

    Filesize

    40KB

  • memory/4548-139-0x0000000005540000-0x0000000005596000-memory.dmp

    Filesize

    344KB

  • memory/4548-140-0x00000000051F0000-0x0000000005200000-memory.dmp

    Filesize

    64KB

  • memory/4548-141-0x0000000007760000-0x00000000077C6000-memory.dmp

    Filesize

    408KB

  • memory/4548-137-0x00000000051F0000-0x0000000005200000-memory.dmp

    Filesize

    64KB

  • memory/4548-133-0x0000000000790000-0x0000000000850000-memory.dmp

    Filesize

    768KB

  • memory/4548-135-0x00000000058B0000-0x0000000005E54000-memory.dmp

    Filesize

    5.6MB

  • memory/4548-134-0x0000000005260000-0x00000000052FC000-memory.dmp

    Filesize

    624KB