Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-01-2025 13:34

General

  • Target

    Sigmanly_3649c7b868952aa06caef1e133c8f4bdcc2a92763380c7e69af4e2f891afd466.exe

  • Size

    4.2MB

  • MD5

    abcff1e6ac84a5ec546b6672ce45bf02

  • SHA1

    e5e8c81f0b1d2ea23adbe79d5a69318a7212bbea

  • SHA256

    3649c7b868952aa06caef1e133c8f4bdcc2a92763380c7e69af4e2f891afd466

  • SHA512

    010d13c525854f55eecae7900d3a2637efc17f45e23d2915aa61fd8d1ea18a6b0d41cf08f9404ef5834cbd010af60fd7c90f7ad564fb96560a03f28c0422c40e

  • SSDEEP

    98304:mvvsqWkkoPBI4gzTwyc7/fa2y9lqqPBHIBCcD:m3okkoPBI3z031y9l1HWC8

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_3649c7b868952aa06caef1e133c8f4bdcc2a92763380c7e69af4e2f891afd466.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigmanly_3649c7b868952aa06caef1e133c8f4bdcc2a92763380c7e69af4e2f891afd466.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:4216
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4216 -s 1136
      2⤵
      • Program crash
      PID:1964
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4216 -ip 4216
    1⤵
      PID:4848

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4216-0-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-1-0x0000000077CB4000-0x0000000077CB6000-memory.dmp

      Filesize

      8KB

    • memory/4216-2-0x0000000000201000-0x000000000048A000-memory.dmp

      Filesize

      2.5MB

    • memory/4216-3-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-4-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-5-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-6-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-7-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-8-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-9-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-10-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-11-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-12-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-13-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-14-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-15-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB

    • memory/4216-16-0x0000000000200000-0x0000000000E21000-memory.dmp

      Filesize

      12.1MB