Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • submitted
    15-11-2024 15:49

General

  • Target

    c65c51ed60f91a92789c4b056821ef51252baa2a1679a6513ab008acf0464ccb.dll

  • Size

    3.7MB

  • MD5

    8e7115ea580f39c152e4d4bc4472c402

  • SHA1

    4ea1f1d8a01f251fa5db350f72b04a1d11028fb0

  • SHA256

    c65c51ed60f91a92789c4b056821ef51252baa2a1679a6513ab008acf0464ccb

  • SHA512

    bde81a4da80dda9e06815b153caa2dcaea874bfd973c9d24b1e935e0c88a0d094dcce0b153d9866a87b2b06bc636a30b23d3fe27e345b4a2ee174b52acc44619

  • SSDEEP

    98304:XZo5q0spyUTJkqVnIY0z7ceiVNhPvpx3:XZwqlp51krrz4vp

Malware Config

Extracted

Family

bumblebee

Botnet

2104a

C2

282.19.133.12:443

91.122.18.192:443

185.156.172.62:443

72.123.65.11:443

149.255.35.167:443

172.241.27.146:443

rc4.plain

Signatures

  • BumbleBee

    BumbleBee is a loader malware written in C++.

  • Bumblebee family
  • 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
  • Blocklisted process makes network request 5 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.

  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c65c51ed60f91a92789c4b056821ef51252baa2a1679a6513ab008acf0464ccb.dll,#1
    1⤵
    • Enumerates VirtualBox registry keys
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Blocklisted process makes network request
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Checks for VirtualBox DLLs, possible anti-VM trick
    • Suspicious behavior: EnumeratesProcesses
    PID:2300

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2300-0-0x00007FFA3F58D000-0x00007FFA3F58E000-memory.dmp

    Filesize

    4KB

  • memory/2300-2-0x00007FFA3F4F0000-0x00007FFA3F6E5000-memory.dmp

    Filesize

    2.0MB

  • memory/2300-6-0x00007FFA3F4F0000-0x00007FFA3F6E5000-memory.dmp

    Filesize

    2.0MB

  • memory/2300-5-0x00007FFA3F4F0000-0x00007FFA3F6E5000-memory.dmp

    Filesize

    2.0MB

  • memory/2300-4-0x00007FFA3F4F0000-0x00007FFA3F6E5000-memory.dmp

    Filesize

    2.0MB

  • memory/2300-3-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-1-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-7-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-8-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-9-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-10-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-11-0x00007FFA3F58D000-0x00007FFA3F58E000-memory.dmp

    Filesize

    4KB

  • memory/2300-12-0x00007FFA3F4F0000-0x00007FFA3F6E5000-memory.dmp

    Filesize

    2.0MB

  • memory/2300-13-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-14-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-16-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-15-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-18-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-17-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-19-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-20-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB

  • memory/2300-21-0x0000018049220000-0x000001804946B000-memory.dmp

    Filesize

    2.3MB