Analysis

  • max time kernel
    137s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    13-02-2023 23:42

General

  • Target

    contribute.dll

  • Size

    2.2MB

  • MD5

    a719d4ef0765ba845179d9819c37c061

  • SHA1

    9aa9bc1b5707bddcbfbdbf5f8d24e477428d59af

  • SHA256

    05e26546200479529011d3500d17694e8ff14a7acaf1a229c5e28ab13ed22c99

  • SHA512

    237075e8115de5fde24dae339e6ddc3d2540993b8c420f16a8995d63b3b2628f62088c0d4327dd1f98f63d83ed74f9c1fe83ee722db549f53876e65c45f921f0

  • SSDEEP

    49152:jpjKPCexHdaV5UT0PbDTQfWPjgH3/OiU7H1OXQ:jp2qeHdIST0PPTNPjIHU7HEXQ

Score
10/10

Malware Config

Extracted

Family

bumblebee

Botnet

132cc

C2

173.234.155.246:443

172.86.120.111:443

31.232.16.192:443

205.185.113.34:443

103.175.16.104:443

23.254.167.63:443

23.82.140.155:443

51.68.144.43:443

185.173.34.35:443

104.168.157.253:443

146.19.173.86:443

160.20.147.242:443

rc4.plain

Signatures

  • BumbleBee

    BumbleBee is a webshell malware written in C++.

  • Blocklisted process makes network request 7 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\contribute.dll,DllRegisterServer
    1⤵
    • Blocklisted process makes network request
    • Suspicious use of NtCreateThreadExHideFromDebugger
    PID:1972

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/1972-54-0x0000000001F40000-0x00000000020A1000-memory.dmp

    Filesize

    1.4MB

  • memory/1972-55-0x0000000001DE0000-0x0000000001F40000-memory.dmp

    Filesize

    1.4MB