Analysis

  • max time kernel
    45s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2022 17:28

General

  • Target

    request.lnk

  • Size

    1KB

  • MD5

    1d0f13665c86358fa7ac3c9f6ea11aab

  • SHA1

    85755e92d2a690eb47e12ef98034c6e7aeef467c

  • SHA256

    cdac9fcc6ae12f37231ab1be5515275f1c301f7e10a542059ad0fb82174b30b3

  • SHA512

    8596dadb49514ecc94c6cfad0b8e0b8c59ba9d4e01d61c1b54390f83c4261ba8ed3d8fc92535916f0fd3ca950961c5b90a319eb688a1a34d0f4748b2a65782a7

Malware Config

Extracted

Family

bumblebee

Botnet

3108

C2

54.203.130.81:428

103.160.22.125:439

100.194.5.156:279

138.10.128.167:465

16.68.199.17:119

49.58.238.45:318

158.121.21.147:265

76.179.109.138:320

219.114.206.84:318

242.123.229.45:306

247.142.48.124:278

137.128.84.3:389

178.18.89.43:472

68.72.230.54:206

253.1.172.156:320

88.12.127.219:297

113.50.222.178:284

135.21.140.60:404

64.44.102.36:443

247.232.101.39:263

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 use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\request.lnk
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Windows\System32\odbcconf.exe
      "C:\Windows\System32\odbcconf.exe" /a {REGSVR GfsFepFIKsNGpt.dll}
      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 use of NtCreateThreadExHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      PID:1112

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1112-92-0x0000000002260000-0x0000000002376000-memory.dmp

    Filesize

    1.1MB

  • memory/1968-54-0x000007FEFC041000-0x000007FEFC043000-memory.dmp

    Filesize

    8KB