bumblebee | d04578d91b1921355bfa4ba691a6f91b6e896a84efd33b389451488c56be63b7

General

Target

d04578d91b1921355bfa4ba691a6f91b6e896a84efd33b389451488c56be63b7.dll
Size

1.5MB
MD5

2edde858ea2eefa639ea23a7d63e5fa9
SHA1

448d8434c7b7265aa4fe2004d9a83add9583ee6b
SHA256

d04578d91b1921355bfa4ba691a6f91b6e896a84efd33b389451488c56be63b7
SHA512

ace5e65085ac71e7b06a5065d8f5df881f69ee7bdcc62b9c829487dbd76c951e831bccbc93fbb4e7559b7b62f52d7a01ded4ee13327012b2006215ac1ddb9213

Score

10^/10

bumblebee 296a evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

296a

C2

218.17.34.195:107

108.62.118.145:443

195.193.46.112:234

224.8.125.117:383

174.230.203.32:222

159.248.111.91:306

195.86.112.33:266

140.112.120.134:115

222.137.120.137:146

56.248.40.53:437

83.249.212.150:127

2.100.7.120:332

134.76.108.38:304

61.213.140.44:487

174.58.214.252:228

229.192.93.82:321

40.47.149.113:157

95.46.196.232:438

77.180.42.62:122

42.104.196.184:489

rc4.plain

Signatures

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

Enumerates VirtualBox registry keys 2 TTPs 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	regsvr32.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	regsvr32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	regsvr32.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	regsvr32.exe

Checks BIOS information in registry 2 TTPs 3 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	regsvr32.exe

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

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Wine	regsvr32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1336	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe
1336	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\d04578d91b1921355bfa4ba691a6f91b6e896a84efd33b389451488c56be63b7.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 use of NtCreateThreadExHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

4

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

1

T1082

Virtualization/Sandbox Evasion

4

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1336-54-0x000007FEFB5D1000-0x000007FEFB5D3000-memory.dmp

Filesize
8KB

Download
memory/1336-55-0x0000000002450000-0x0000000002566000-memory.dmp

Filesize
1.1MB

Download
memory/1336-57-0x0000000002450000-0x0000000002566000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads