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Analysis

  • max time kernel
    92s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2025, 09:26

General

  • Target

    Sigmanly_a782e6fb792b210e82802ac312542a670a37f4668031418875db91a4c9dfd5be.exe

  • Size

    4.3MB

  • MD5

    2115e3fbda695f11af734c24ee699e6d

  • SHA1

    334ace427d9b4e6a95ea977e31c8060c3e3eb54c

  • SHA256

    a782e6fb792b210e82802ac312542a670a37f4668031418875db91a4c9dfd5be

  • SHA512

    7f198dce8e11febbd0240783fcb167852bf61c363c86f9493f7fe229fb600130b7a1697ef168d26f767319d081b4798c8584c3e08ee476483e330e74c9bf6738

  • SSDEEP

    98304:l6K88R3RbvX59VfoLNuqfCxpK4N7URJT6S9Rjf/J8Zvx:lV88fX53foLnqvsN6S/jfKZv

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_a782e6fb792b210e82802ac312542a670a37f4668031418875db91a4c9dfd5be.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigmanly_a782e6fb792b210e82802ac312542a670a37f4668031418875db91a4c9dfd5be.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:4308
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 1132
      2⤵
      • Program crash
      PID:2240
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4308 -ip 4308
    1⤵
      PID:1012

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4308-0-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-1-0x00000000779F4000-0x00000000779F6000-memory.dmp

      Filesize

      8KB

    • memory/4308-2-0x0000000000781000-0x0000000000A0A000-memory.dmp

      Filesize

      2.5MB

    • memory/4308-3-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-4-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-5-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-6-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-7-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-8-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-9-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-10-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-11-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-12-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-13-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-14-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-15-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-16-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-17-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-18-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB

    • memory/4308-19-0x0000000000780000-0x00000000013B1000-memory.dmp

      Filesize

      12.2MB