Analysis

  • max time kernel
    52s
  • max time network
    154s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    25/06/2022, 07:27

General

  • Target

    run.bat

  • Size

    56B

  • MD5

    057da6dbb40a272adc8146a90ad18a84

  • SHA1

    df04c5c34874182166c228bf8dcd2368ce0cf4af

  • SHA256

    f4271ffa3b6a6025d3e39d4179543fa839e7befda292f91405d7a872481afcdd

  • SHA512

    911729f3548d4570eafaf2930631a94b9a94b195442cc85a9d2f8f81807aceed06f951abf09b295659bd29e7707cbbe59024ee607e81a3e39bf52ea24949e2ba

Malware Config

Extracted

Family

bumblebee

Botnet

236r

C2

54.38.136.111:443

103.200.32.188:492

74.57.128.223:112

13.2.200.200:338

228.194.82.251:473

247.224.208.140:372

0.151.228.146:282

192.119.77.241:443

186.150.217.235:221

50.41.225.93:478

50.167.186.112:239

173.77.219.120:201

187.210.45.242:299

239.11.133.48:421

207.6.99.3:471

98.28.11.39:201

193.239.152.108:242

133.209.39.126:217

146.19.173.202:443

97.194.155.116:446

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.

  • 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\run.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\m3n4rat.dll,PjyJGGCvQs
      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 behavior: EnumeratesProcesses
      PID:2828

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2828-119-0x0000019FE0180000-0x0000019FE0296000-memory.dmp

    Filesize

    1.1MB

  • memory/2828-120-0x00007FFCCF020000-0x00007FFCCF02D000-memory.dmp

    Filesize

    52KB