Analysis

  • max time kernel
    94s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 10 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
    PID:1284
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1284 -s 1136
      2⤵
      • Program crash
      PID:2756
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 1284 -ip 1284
    1⤵
      PID:1716

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1284-0-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-1-0x0000000077324000-0x0000000077326000-memory.dmp

      Filesize

      8KB

    • memory/1284-2-0x0000000000961000-0x0000000000BEA000-memory.dmp

      Filesize

      2.5MB

    • memory/1284-3-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-4-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-5-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-6-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-7-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-8-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-9-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-10-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-11-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-12-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-13-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-14-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-15-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-16-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB

    • memory/1284-17-0x0000000000960000-0x00000000015AD000-memory.dmp

      Filesize

      12.3MB