Analysis Overview
SHA256
e1dbce8a89b5fea0f3cf6da9560fd573dfe9c93c5d6d8d2fef8902a3589cdf15
Threat Level: Known bad
The file a6ac1a8bb63362ed7515f2ca02fb52be.exe was found to be: Known bad.
Malicious Activity Summary
BumbleBee
Suspicious use of NtCreateThreadExHideFromDebugger
Drops file in System32 directory
Unsigned PE
Checks processor information in registry
Enumerates system info in registry
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-09-14 08:51
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-09-14 08:51
Reported
2023-09-14 08:53
Platform
win7-20230831-en
Max time kernel
120s
Max time network
123s
Command Line
Signatures
BumbleBee
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\regsvr32.exe | N/A |
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a6ac1a8bb63362ed7515f2ca02fb52be.dll
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | v5b6ml4o0nq.life | udp |
| DE | 116.203.151.240:443 | v5b6ml4o0nq.life | tcp |
Files
memory/1116-0-0x0000000001E60000-0x0000000001ED9000-memory.dmp
memory/1116-1-0x0000000077740000-0x00000000778E9000-memory.dmp
memory/1116-2-0x0000000001FF0000-0x00000000020FA000-memory.dmp
memory/1116-4-0x0000000077740000-0x00000000778E9000-memory.dmp
memory/1116-5-0x0000000001FF0000-0x00000000020FA000-memory.dmp
memory/1116-6-0x0000000001FF0000-0x00000000020FA000-memory.dmp
memory/1116-7-0x0000000001E60000-0x0000000001ED9000-memory.dmp
memory/1116-8-0x0000000077740000-0x00000000778E9000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-09-14 08:51
Reported
2023-09-14 08:53
Platform
win10v2004-20230831-en
Max time kernel
143s
Max time network
148s
Command Line
Signatures
BumbleBee
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{19843BFB-B491-4721-8BA9-CB88D55B767E}.catalogItem | C:\Windows\System32\svchost.exe | N/A |
Suspicious use of NtCreateThreadExHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\regsvr32.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\System32\svchost.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\System32\svchost.exe | N/A |
Uses Task Scheduler COM API
Processes
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a6ac1a8bb63362ed7515f2ca02fb52be.dll
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.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 |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 254.1.248.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 63.141.182.52.in-addr.arpa | udp |
Files
memory/2432-5-0x0000000002780000-0x00000000027F9000-memory.dmp
memory/2432-7-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp
memory/2432-6-0x0000000002950000-0x0000000002A5A000-memory.dmp
memory/2432-9-0x0000000002950000-0x0000000002A5A000-memory.dmp
memory/2432-11-0x0000000002950000-0x0000000002A5A000-memory.dmp
memory/2432-10-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp
memory/2432-8-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp
memory/2432-14-0x0000000002950000-0x0000000002A5A000-memory.dmp
memory/2432-15-0x0000000002780000-0x00000000027F9000-memory.dmp
memory/2432-16-0x00007FFC5FD30000-0x00007FFC5FF25000-memory.dmp