Analysis

  • max time kernel
    346s
  • max time network
    438s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2022 16:57

General

  • Target

    11bce4f2dcdc2c1992fddefb109e3ddad384b5171786a1daaddadc83be25f355.iso

  • Size

    2.5MB

  • MD5

    f4235fde77119ac772a2730d55c49c54

  • SHA1

    a250adaf3d5a5c2cd4d5ad4390e4cecbe00b3dd7

  • SHA256

    11bce4f2dcdc2c1992fddefb109e3ddad384b5171786a1daaddadc83be25f355

  • SHA512

    c65b5bbba88cd96856766b1c9f3cce0d7ccedeb63164e165a50508cd2147b522994edaf271953ef19a41afdd7b92bae1aa45b1e5f7e18885a1e68d8012a55086

  • SSDEEP

    24576:/ndTy8pMlAshQiX5Qtme5hekk+t8cH21dFa8POIuTQO0nvpC2QQLVtIwkvME:VT+69d5hrkgp4OlT90nvpdL7kv

Malware Config

Extracted

Family

bumblebee

Botnet

1905r

C2

154.56.0.221:443

64.44.101.250:443

103.175.16.117:443

rc4.plain

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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\11bce4f2dcdc2c1992fddefb109e3ddad384b5171786a1daaddadc83be25f355.iso
    1⤵
    • Modifies registry class
    PID:2632
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3512
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" tamirlan.dll,EdHVntqdWt
      1⤵
      • 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 behavior: EnumeratesProcesses
      PID:4612

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4612-132-0x000001747BDB0000-0x000001747BE78000-memory.dmp

      Filesize

      800KB

    • memory/4612-133-0x00007FF9E6360000-0x00007FF9E6370000-memory.dmp

      Filesize

      64KB