Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07-01-2025 20:36

General

  • Target

    Sigmanly_05dd7b104f2c11892363053cfa4d3feed76b39614b34764ac571893b9495e2c4.exe

  • Size

    4.3MB

  • MD5

    8cb06b0904107a21706822f2f2d90832

  • SHA1

    37dee7617a62f9a5e5853cc977a125be54ac58b7

  • SHA256

    05dd7b104f2c11892363053cfa4d3feed76b39614b34764ac571893b9495e2c4

  • SHA512

    23cfb74398c11ebb58060b2da0414008aaba5479e20790c4e7dae1325c24f34996b4ee8aff1ec4b23211be2fcfcb4f3395da117cd414ecea79adfe90ddd9ed7a

  • SSDEEP

    98304:x2MM2EP0mQedsJTfKVAakoJykzhZczXGozRrrM3GR7fvkoLsw/ji:x2t3Vuu3FWzWozR4GR0s3

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\Sigmanly_05dd7b104f2c11892363053cfa4d3feed76b39614b34764ac571893b9495e2c4.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigmanly_05dd7b104f2c11892363053cfa4d3feed76b39614b34764ac571893b9495e2c4.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:3028
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3028 -s 652
      2⤵
      • Program crash
      PID:2084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3028-0-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-1-0x0000000076F20000-0x0000000076F22000-memory.dmp

    Filesize

    8KB

  • memory/3028-2-0x0000000000BB1000-0x0000000000E3A000-memory.dmp

    Filesize

    2.5MB

  • memory/3028-3-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-4-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-5-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-6-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-7-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-8-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-9-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-10-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-11-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-12-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-13-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-14-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-15-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-16-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-17-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB

  • memory/3028-18-0x0000000000BB0000-0x00000000017FD000-memory.dmp

    Filesize

    12.3MB