Analysis

  • max time kernel
    92s
  • max time network
    144s
  • 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 11:45

General

  • Target

    Sigmanly_085ebe5916195a08c768e279650cdaa09b11b8ceda0fad4b9a499a4a3267b461.exe

  • Size

    4.3MB

  • MD5

    fbba61c61fa706eec44a022a1e9e3bac

  • SHA1

    74e5e5e2ad5dfba941f35c8e207cad219b9ad21d

  • SHA256

    085ebe5916195a08c768e279650cdaa09b11b8ceda0fad4b9a499a4a3267b461

  • SHA512

    75d98196ee6fdf28b074ca8a2e17d27c7b3eaa187bd0f92fb02391090974ac649d450e14c0238cebb8c629884d3f3e2c9737888deaa12dbe12187fbf03e57e72

  • SSDEEP

    98304:cNLH9lv77mJ/g1Ef/DPJWUUz+TE88fc9vv43AYRSjasy1UtAxa:uL/zypmo4UeuYfcy3+DtUa

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_085ebe5916195a08c768e279650cdaa09b11b8ceda0fad4b9a499a4a3267b461.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigmanly_085ebe5916195a08c768e279650cdaa09b11b8ceda0fad4b9a499a4a3267b461.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:4088
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4088 -s 844
      2⤵
      • Program crash
      PID:2680
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4088 -ip 4088
    1⤵
      PID:1128

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4088-0-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-1-0x0000000077DD4000-0x0000000077DD6000-memory.dmp

      Filesize

      8KB

    • memory/4088-2-0x0000000000E61000-0x00000000010EA000-memory.dmp

      Filesize

      2.5MB

    • memory/4088-3-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-4-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-5-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-6-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-7-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-8-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-9-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-10-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-11-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-12-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-13-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-14-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-15-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-16-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-17-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB

    • memory/4088-18-0x0000000000E60000-0x0000000001A9C000-memory.dmp

      Filesize

      12.2MB