Analysis

  • max time kernel
    102s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15/06/2022, 05:39

General

  • Target

    rec/replay.dll

  • Size

    2.0MB

  • MD5

    fc5b7fb7c307677abf16d477e674c3cb

  • SHA1

    28c0bc94ae81e4df179d050d8f353f6b2a7e01ca

  • SHA256

    4fd180dfad7c544ada012af536d34740995027cb1a0b651f9b9fa68b53481756

  • SHA512

    f4742d7b8a8e3fab84fd025cc74780a86e06b22ef70fc8cc54fc9754bf50431dbd471ffd2cdee688f3d8551c80a08b18297a265e39d99aaa23cca8c40078a0be

Malware Config

Extracted

Family

bumblebee

Botnet

146a

C2

12.236.242.155:211

243.92.11.201:387

182.10.38.85:198

117.75.94.181:456

148.70.67.206:267

247.23.37.74:155

122.247.231.47:117

45.142.214.167:443

171.227.174.67:108

204.1.81.223:110

145.239.28.110:443

170.24.243.46:441

69.235.89.243:366

4.165.175.212:387

76.96.116.176:190

128.44.54.202:493

103.175.16.106:443

40.72.17.141:326

146.19.173.186:443

51.68.145.54:443

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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\rec\replay.dll,#1
    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:2848

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2848-130-0x000001B2304F0000-0x000001B230607000-memory.dmp

    Filesize

    1.1MB

  • memory/2848-131-0x00007FF982700000-0x00007FF982710000-memory.dmp

    Filesize

    64KB