Analysis Overview
SHA256
b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77
Threat Level: Known bad
The file b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77 was found to be: Known bad.
Malicious Activity Summary
Banload
Blackmoon, KrBanker
Detect Blackmoon payload
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Checks BIOS information in registry
UPX packed file
System Location Discovery: System Language Discovery
Program crash
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Modifies registry class
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-26 09:51
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-26 09:51
Reported
2024-09-26 09:54
Platform
win7-20240903-en
Max time kernel
140s
Max time network
121s
Command Line
Signatures
Banload
Blackmoon, KrBanker
Detect Blackmoon payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Windows\SysWOW64\rundll32.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\rundll32.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\AutoConvertTo | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\AutoConvertTo\ = "{64818D11-4F9B-11CF-86EA-00AA00B929E8}" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\Insertable | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\ProgID | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\ProgID\ = "PowerPoint.Slide.4" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\TreatAs | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\TreatAs\ = "{64818D11-4F9B-11CF-86EA-00AA00B929E8}" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048} | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: 33 | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 668
Network
Files
memory/1088-0-0x0000000002860000-0x0000000002A60000-memory.dmp
memory/1088-7-0x0000000010000000-0x0000000010379000-memory.dmp
memory/1088-9-0x0000000010000000-0x0000000010379000-memory.dmp
memory/1088-10-0x0000000010000000-0x0000000010379000-memory.dmp
memory/1088-11-0x0000000002860000-0x0000000002A60000-memory.dmp
memory/1088-12-0x00000000001D0000-0x00000000001DB000-memory.dmp
memory/1088-13-0x00000000001D0000-0x00000000001DB000-memory.dmp
memory/1088-15-0x00000000001D0000-0x00000000001DB000-memory.dmp
memory/1088-14-0x0000000010000000-0x0000000010379000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-26 09:51
Reported
2024-09-26 09:54
Platform
win10v2004-20240802-en
Max time kernel
94s
Max time network
100s
Command Line
Signatures
Banload
Blackmoon, KrBanker
Detect Blackmoon payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Windows\SysWOW64\rundll32.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Windows\SysWOW64\rundll32.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\rundll32.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\rundll32.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\InprocServer32 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\InprocServer32\ = "C:\\Windows\\SysWOW64\\MSDvbNP.ax" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\InprocServer32\ThreadingModel = "Both" | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048} | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7C231048-7C23-1048-7C23-10487C231048}\ = "Microsoft ATSC Network Provider" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: 33 | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1524 wrote to memory of 648 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1524 wrote to memory of 648 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 1524 wrote to memory of 648 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b141ab85d517a27d05b3062622ee40da3de8af75c699e44e3f34c54a9257ae77.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 648 -ip 648
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 648 -s 1116
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 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
Files
memory/648-0-0x0000000002C40000-0x0000000002E40000-memory.dmp
memory/648-7-0x0000000010000000-0x0000000010379000-memory.dmp
memory/648-10-0x0000000010000000-0x0000000010379000-memory.dmp
memory/648-9-0x0000000010000000-0x0000000010379000-memory.dmp
memory/648-11-0x0000000002C40000-0x0000000002E40000-memory.dmp
memory/648-13-0x0000000002BE0000-0x0000000002BEB000-memory.dmp
memory/648-12-0x0000000002BE0000-0x0000000002BEB000-memory.dmp
memory/648-14-0x0000000002C40000-0x0000000002E40000-memory.dmp
memory/648-15-0x0000000010000000-0x0000000010379000-memory.dmp
memory/648-16-0x0000000002BE0000-0x0000000002BEB000-memory.dmp