Analysis

  • max time kernel
    90s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    28/06/2022, 20:44

General

  • Target

    PRD.lnk

  • Size

    1KB

  • MD5

    ba087f3dc565e4c1dc54c5e2f581f4a1

  • SHA1

    90940bfa9973a4d455e25d09c2c0f1c4d2ffb06e

  • SHA256

    dfc5072b4874706e6ebe8c47140dedc6051f8dda92351bdea8996154e6a96ed2

  • SHA512

    c3f22c3d24d08b4fe96e097bbb192f1c47afc3933b49d20da98d33edd0fb8c6c7615a102a4f75d6f1ef50c0c85ab574e9b41be9adf780ee27b6667b3e64d648c

Malware Config

Extracted

Family

bumblebee

Botnet

286a

C2

40.126.50.56:271

185.62.58.175:443

3.27.187.15:317

28.236.100.216:424

75.72.64.79:334

156.148.26.226:446

104.83.15.21:107

199.236.144.121:106

6.23.156.239:194

211.73.200.45:129

240.230.245.154:407

209.141.58.141:443

35.225.143.246:179

212.151.132.229:145

163.192.104.228:409

138.84.254.103:385

52.100.187.210:219

74.205.65.255:245

233.96.129.4:276

114.35.182.27:323

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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\PRD.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2184
    • C:\Windows\System32\odbcconf.exe
      "C:\Windows\System32\odbcconf.exe" -f sec.rsp
      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:2512

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2512-131-0x00000185EB410000-0x00000185EB526000-memory.dmp

    Filesize

    1.1MB

  • memory/2512-132-0x00007FFE2D3E0000-0x00007FFE2D3F0000-memory.dmp

    Filesize

    64KB