Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07-12-2024 17:58

General

  • Target

    1f16e15ed40c117aa6468a9e79990e5cef926d0838cf1ce08d860ed6d092dee5.exe

  • Size

    4.3MB

  • MD5

    ac0b9cd9364e29334c54bee967689b1a

  • SHA1

    074a6e83089aa60a5d05e5f0f3cb52dd98d01b08

  • SHA256

    1f16e15ed40c117aa6468a9e79990e5cef926d0838cf1ce08d860ed6d092dee5

  • SHA512

    9940a237e9b2b14c1e853799b47855c467c83cc86487e96a0124fa70a8bc6f2f73d7393debb43ddf0a0b344974c1f725d0136712837050fddfd2f901f587be4d

  • SSDEEP

    98304:1Hcj5o18s0lBN5K0kXMp6oTEZ7ser3FvUbudYwUD:mj5o18rBNk0kXeK7ser3uyG

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\1f16e15ed40c117aa6468a9e79990e5cef926d0838cf1ce08d860ed6d092dee5.exe
    "C:\Users\Admin\AppData\Local\Temp\1f16e15ed40c117aa6468a9e79990e5cef926d0838cf1ce08d860ed6d092dee5.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:2276
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2276 -s 652
      2⤵
      • Program crash
      PID:1944

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2276-0-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-1-0x00000000777F0000-0x00000000777F2000-memory.dmp

    Filesize

    8KB

  • memory/2276-2-0x0000000000D81000-0x0000000001005000-memory.dmp

    Filesize

    2.5MB

  • memory/2276-3-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-4-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-5-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-6-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-7-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-8-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-9-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-10-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-11-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-12-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-13-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-14-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-15-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-16-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-17-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-18-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB

  • memory/2276-19-0x0000000000D80000-0x0000000001A50000-memory.dmp

    Filesize

    12.8MB