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Analysis

  • max time kernel
    91s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/09/2022, 18:18

General

  • Target

    submit/loader.bat

  • Size

    44B

  • MD5

    2ab322b35e0944443a021becf3c21c88

  • SHA1

    99bf8943e83426f27e345ca2041426ab3f6e2de8

  • SHA256

    f14048c16dafed03569f214c71f3d6f135c5ced806a5564133e755bb4be254a8

  • SHA512

    79f35ed5d95fabf000a5081512d50d764c99c0d6e2487d1551dc42534bed93ca00516b56ed0a672c67e1544bc739ea396acce60259841f585cd3a00029703793

Malware Config

Signatures

  • BumbleBee

    BumbleBee is a webshell malware written in C++.

  • Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 3 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.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\submit\loader.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2900
    • C:\Windows\system32\rundll32.exe
      rundll32 .\enchanting.dat,vcsfile
      2⤵
      • Enumerates VirtualBox registry keys
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Looks for VirtualBox Guest Additions in registry
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:1604

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1604-135-0x000001A151EF0000-0x000001A152050000-memory.dmp

    Filesize

    1.4MB