Overview

overview

10

Static

static

Project Re...ts.lnk

windows7_x64

10

Project Re...ts.lnk

windows10-2004_x64

10

req.dll

windows7_x64

10

req.dll

windows10-2004_x64

10

req.rsp

windows7_x64

3

req.rsp

windows10-2004_x64

3

Analysis

  • max time kernel
    42s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    27/06/2022, 18:55

Sharing

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General

  • Target

    req.dll

  • Size

    1.4MB

  • MD5

    de26dc1fee02ba446cad6c2f4c21fc31

  • SHA1

    3ec4e5303d938f49db3393cb86364f144e18d514

  • SHA256

    9e697d49727101d423116274df53a15676ad447e086df0972f91ae78064c9bc1

  • SHA512

    800302fdbb4cb33528647f785b951a9f2d8f9d37bfe76d1db951e63a04a4272fd2eae727912cf5533783d4ee73fe6621b3b6dbd50e387b6a242addb40e17400a

Score
10/10
bumblebee276aevasiontrojan

Malware Config

Extracted

Family

bumblebee

Botnet

276a

C2

100.65.168.129:171

207.177.53.164:325

32.87.78.10:384

117.162.18.77:404

116.176.236.58:151

123.2.128.107:267

169.146.162.63:373

55.115.177.92:239

224.248.147.154:499

88.7.179.62:135

187.218.226.58:319

146.70.106.52:443

8.34.35.232:389

98.116.138.87:321

255.161.114.204:370

159.90.121.44:362

150.226.60.234:160

161.254.115.117:308

211.66.121.128:361

43.10.228.15:400
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 41 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\req.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:748

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/748-54-0x000007FEFBE51000-0x000007FEFBE53000-memory.dmp

    Filesize

    8KB

    Download

  • memory/748-55-0x00000000024F0000-0x0000000002606000-memory.dmp

    Filesize

    1.1MB

    Download

  • memory/748-57-0x00000000024F0000-0x0000000002606000-memory.dmp

    Filesize

    1.1MB

    Download