Overview

overview

10

Static

static

of/Office_Install.lnk

windows7-x64

10

of/Office_Install.lnk

windows10-2004-x64

10

of/office.dll

windows7-x64

10

of/office.dll

windows10-2004-x64

10

Analysis

  • max time kernel
    138s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-09-2022 15:42

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General

  • Target

    of/office.dll

  • Size

    1.5MB

  • MD5

    1b0a14fc9aeb3b9c184fd011dbe69027

  • SHA1

    261fe4a73360fc1902705c1bc9d45ce979094cee

  • SHA256

    ca99667840a239c1a7d7f91b9432c0dcb5b7d8f7696cf79dd94ec2a9773f9bc3

  • SHA512

    3fd5e9bcdedd45b4c686544902086225c1f0b86d5156eec74e13737a6fb467edf3de4ff3e31bc02dfbafb16c07b58ba876174c29da489126397dcd999b73f8d8

  • SSDEEP

    49152:6J/gKqeCzyMiBTe49pFNEI7BAcPz0AhbzC32N8JfTJJwQrsUoT1TCjK0q58un0K6:6JtBCwFt7BAcPz0AhbzC32N8JfTJJwQF

Score
10/10
bumblebee176evasiontrojan

Malware Config

Extracted

Family

bumblebee

Botnet

176

C2

70.164.10.27:408

26.41.31.179:151

114.231.91.156:187

133.178.159.62:149

14.62.208.157:254

25.98.245.218:116

118.68.44.63:384

17.129.76.222:497

169.218.206.202:179

74.82.20.46:385

146.19.173.233:443

224.139.76.178:199

203.204.185.83:210

144.253.119.113:310

143.161.126.207:367

23.67.101.88:308

36.73.68.161:435

23.82.141.11:443

172.93.181.233:443

250.96.42.74:399
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
  • 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.

    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\of\office.dll
    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:2468

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2468-132-0x00000000032B0000-0x00000000033C7000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/2468-133-0x00000000032B0000-0x00000000033C7000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/2468-134-0x00000000032B0000-0x00000000033C7000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/2468-135-0x00007FFEB65A0000-0x00007FFEB65B0000-memory.dmp

    Filesize

    64KB

    Download