bumblebee | 7d26abac30a5196738805e5376717b23776f52133f3e983bc981650ac8ca15a2

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
06-09-2022 15:42

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General

Target

of/office.dll
Size

1.5MB
MD5

1b0a14fc9aeb3b9c184fd011dbe69027
SHA1

261fe4a73360fc1902705c1bc9d45ce979094cee
SHA256

ca99667840a239c1a7d7f91b9432c0dcb5b7d8f7696cf79dd94ec2a9773f9bc3
SHA512

3fd5e9bcdedd45b4c686544902086225c1f0b86d5156eec74e13737a6fb467edf3de4ff3e31bc02dfbafb16c07b58ba876174c29da489126397dcd999b73f8d8
SSDEEP

49152:6J/gKqeCzyMiBTe49pFNEI7BAcPz0AhbzC32N8JfTJJwQrsUoT1TCjK0q58un0K6:6JtBCwFt7BAcPz0AhbzC32N8JfTJJwQF

Score

10^/10

bumblebee 176 evasion trojan

Malware Config

Extracted

Family

bumblebee

Botnet

176

70.164.10.27:408

26.41.31.179:151

114.231.91.156:187

133.178.159.62:149

14.62.208.157:254

25.98.245.218:116

118.68.44.63:384

17.129.76.222:497

169.218.206.202:179

74.82.20.46:385

146.19.173.233:443

224.139.76.178:199

203.204.185.83:210

144.253.119.113:310

143.161.126.207:367

23.67.101.88:308

36.73.68.161:435

23.82.141.11:443

172.93.181.233:443

250.96.42.74:399

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-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Wine	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

pid	Process
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe
1660	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\of\office.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 behavior: EnumeratesProcesses
PID:1660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1660-54-0x000007FEFBCE1000-0x000007FEFBCE3000-memory.dmp

Filesize
8KB

Download
memory/1660-55-0x00000000024B0000-0x00000000025C7000-memory.dmp

Filesize
1.1MB

Download
memory/1660-57-0x00000000024B0000-0x00000000025C7000-memory.dmp

Filesize
1.1MB

Download