Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    17-12-2024 21:23

General

  • Target

    9423f239cb53933a8e5585af76a49d471dbc4fab82c10b67e3c519def8eed56c.exe

  • Size

    4.2MB

  • MD5

    3cdd95ff7c8fb061a1a077b9eed6af4f

  • SHA1

    f8c42713f9c7c750406dde52859ca2b0f6d8a342

  • SHA256

    9423f239cb53933a8e5585af76a49d471dbc4fab82c10b67e3c519def8eed56c

  • SHA512

    9c57282f715b8f19463c071e99318ce9b00864cfcf30bbf376e827fad26240f7dbde2ccd2bcacc6813ab2fe0cb5f2534bcc298b4727253e46cab6b783466e868

  • SSDEEP

    98304:UHeVCefNDn4+Y8o90rPxIh1oEcbxfXLY:pNxu8i0CSV/

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 6 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9423f239cb53933a8e5585af76a49d471dbc4fab82c10b67e3c519def8eed56c.exe
    "C:\Users\Admin\AppData\Local\Temp\9423f239cb53933a8e5585af76a49d471dbc4fab82c10b67e3c519def8eed56c.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
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2240 -s 656
      2⤵
      • Program crash
      PID:2312

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2240-0-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-1-0x0000000077560000-0x0000000077562000-memory.dmp

    Filesize

    8KB

  • memory/2240-2-0x0000000000361000-0x00000000005E5000-memory.dmp

    Filesize

    2.5MB

  • memory/2240-3-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-4-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-5-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-6-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-7-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-8-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-9-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-10-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-11-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-12-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-13-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-14-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB

  • memory/2240-15-0x0000000000360000-0x0000000000F50000-memory.dmp

    Filesize

    11.9MB