Analysis

  • max time kernel
    31s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    22-03-2023 14:48

General

  • Target

    9e84ae14e226a5c9a3efd85d1b5df6869aab9245cddb4ae6eb81e943886253d6.dll

  • Size

    1.0MB

  • MD5

    15fed1d31f4af4928e915b36f4baa88e

  • SHA1

    32954f133e1713b18f45576dc3244bff47cc19cd

  • SHA256

    9e84ae14e226a5c9a3efd85d1b5df6869aab9245cddb4ae6eb81e943886253d6

  • SHA512

    15b19901f11f054db976f682e1fe8c84c4cea37ac36956e49844448649c7b73a86bdd2285881e0955af7c14418a45bb0febcaa5e04189c87f2196673671c51ef

  • SSDEEP

    24576:meO5bAblScTMT7qZrP7A/lVXiZb0d9hMwPsmBcm8C:membTc8mZr7A7i90nh7Em1

Malware Config

Extracted

Family

bumblebee

Botnet

mvtm1703

C2

194.135.33.182:443

205.185.127.176:443

103.175.16.133:443

45.61.187.204:443

rc4.plain

Signatures

  • BumbleBee

    BumbleBee is a webshell malware written in C++.

  • Blocklisted process makes network request 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\9e84ae14e226a5c9a3efd85d1b5df6869aab9245cddb4ae6eb81e943886253d6.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Suspicious use of NtCreateThreadExHideFromDebugger
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1780 -s 480
      2⤵
      • Program crash
      PID:1356

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1780-54-0x0000000002DF0000-0x0000000002F51000-memory.dmp

    Filesize

    1.4MB

  • memory/1780-55-0x0000000001E40000-0x0000000001ECA000-memory.dmp

    Filesize

    552KB

  • memory/1780-56-0x0000000002DF0000-0x0000000002F51000-memory.dmp

    Filesize

    1.4MB

  • memory/1780-57-0x0000000002DF0000-0x0000000002F51000-memory.dmp

    Filesize

    1.4MB

  • memory/1780-58-0x0000000002DF0000-0x0000000002F51000-memory.dmp

    Filesize

    1.4MB