Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 16:19

General

  • Target

    f66048350cb55b54c77a7affa9c07a2908033463f31c283b6ea4bfe8369683f9.exe

  • Size

    4.3MB

  • MD5

    9a75f19eb595f642457728c0b5306ded

  • SHA1

    ebaf4768f65fd913a3c69a2d83a6d6b2db4eed46

  • SHA256

    f66048350cb55b54c77a7affa9c07a2908033463f31c283b6ea4bfe8369683f9

  • SHA512

    39196f254e906eb506f5a65265b4229ba968a7e9d4f321f0af69c8388afc37f210edf179b4e229947058a392f0154e651051792ecc585f670fc1d26f49715bb6

  • SSDEEP

    98304:taqxPL42BNCxpLKCifVCwD1eS1aKshAtO+Ph:A0DzbCrLE9CwD1Fssjh

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\f66048350cb55b54c77a7affa9c07a2908033463f31c283b6ea4bfe8369683f9.exe
    "C:\Users\Admin\AppData\Local\Temp\f66048350cb55b54c77a7affa9c07a2908033463f31c283b6ea4bfe8369683f9.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:5092
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5092 -s 1136
      2⤵
      • Program crash
      PID:1420
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5092 -ip 5092
    1⤵
      PID:1372

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/5092-0-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-1-0x0000000077AF4000-0x0000000077AF6000-memory.dmp

      Filesize

      8KB

    • memory/5092-2-0x00000000002F1000-0x0000000000575000-memory.dmp

      Filesize

      2.5MB

    • memory/5092-3-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-4-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-5-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-6-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-7-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-8-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-9-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-10-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-11-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-12-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-13-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-14-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-15-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB

    • memory/5092-16-0x00000000002F0000-0x0000000000EED000-memory.dmp

      Filesize

      12.0MB