Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-12-2024 01:27

General

  • Target

    7dc314359cdb76163923b61fc91175c7a09577e37443ca9711ba9c6b33863391.exe

  • Size

    4.2MB

  • MD5

    8a549f15d1418fb4207aadb4ba813a36

  • SHA1

    9019f532acc00096055788d1212842e8bec35627

  • SHA256

    7dc314359cdb76163923b61fc91175c7a09577e37443ca9711ba9c6b33863391

  • SHA512

    1aadc1a1eb8715f02108a6df2b28852c58399335a4760afaa9d7637612b117b118d1f7dcbb9bdbb63a067872b7ee37669379575b51b207678cf55c2d45acfbab

  • SSDEEP

    98304:tom43DbewIxtiiOomSa347fCM65XFKZcdow9vbFgCAuj1:m7zb4CmaOfI/xTFGy

Malware Config

Extracted

Family

cryptbot

C2

http://home.fivetk5vt.top/hLfzXsaqNtoEGyaUtOMJ1734

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\7dc314359cdb76163923b61fc91175c7a09577e37443ca9711ba9c6b33863391.exe
    "C:\Users\Admin\AppData\Local\Temp\7dc314359cdb76163923b61fc91175c7a09577e37443ca9711ba9c6b33863391.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:1044
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1044 -s 652
      2⤵
      • Program crash
      PID:828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1044-0-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-1-0x00000000770D0000-0x00000000770D2000-memory.dmp

    Filesize

    8KB

  • memory/1044-2-0x0000000000061000-0x00000000002E6000-memory.dmp

    Filesize

    2.5MB

  • memory/1044-3-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-4-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-5-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-6-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-7-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-8-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-9-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-11-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-12-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-13-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-14-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-15-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-16-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB

  • memory/1044-17-0x0000000000060000-0x0000000000C3D000-memory.dmp

    Filesize

    11.9MB