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Analysis

  • max time kernel
    95s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/12/2024, 19:00

General

  • Target

    file.exe

  • Size

    4.3MB

  • MD5

    0ef0fc7db1f5c0fee6d9c602c6c2b776

  • SHA1

    a845c9a05545dc0cfc42c2e1316e0bd535240265

  • SHA256

    cb9e7782bc00b5e359e20bb42d798f052e6cca76b77c36c2fc8acde7e93b8d6b

  • SHA512

    a3a171b2eaee101094f3c50b9f651336a277451020ce7da1690d52a08e42cc00fb12d4ac95f4f9c41fb9736ae510c24654493427d0907df39d9b39439f8bf530

  • SSDEEP

    98304:2eMTr1N8AvrRZatKDIufQwt0Z2Z3OfdgQiqaePydaqh:2bn78waUDIm1OkZeHPJq/

Malware Config

Extracted

Family

cryptbot

Signatures

  • CryptBot

    CryptBot is a C++ stealer distributed widely in bundle with other software.

  • Cryptbot family
  • Enumerates VirtualBox registry keys 2 TTPs 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Enumerates VirtualBox registry keys
    • 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
    • Suspicious behavior: EnumeratesProcesses
    PID:1156
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1156 -s 1136
      2⤵
      • Program crash
      PID:384
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1156 -ip 1156
    1⤵
      PID:4764

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1156-0-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-1-0x0000000077804000-0x0000000077806000-memory.dmp

      Filesize

      8KB

    • memory/1156-2-0x00000000002A1000-0x0000000000525000-memory.dmp

      Filesize

      2.5MB

    • memory/1156-3-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-4-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-5-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-6-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-7-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-8-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-10-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-9-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-11-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-12-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-13-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-14-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-15-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-16-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-17-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB

    • memory/1156-18-0x00000000002A0000-0x0000000000F5E000-memory.dmp

      Filesize

      12.7MB