Analysis Overview
SHA256
56dd157bbfede1d15cb1169613abc944c2364a138e27a4a118c78847ebc9bd72
Threat Level: Known bad
The file c5d9033a0433e8d19e9f8c1970dc6d5d.dll was found to be: Known bad.
Malicious Activity Summary
Detect PurpleFox Rootkit
Gh0strat
Gh0st RAT payload
PurpleFox
Gh0strat family
Purplefox family
Blocklisted process makes network request
Enumerates connected drives
Adds Run key to start application
Unsigned PE
Program crash
System Location Discovery: System Language Discovery
Checks processor information in registry
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-09 11:41
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-09 11:41
Reported
2024-11-09 11:43
Platform
win7-20240903-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Gh0st RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Gh0strat
Gh0strat family
PurpleFox
Purplefox family
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Windows\\SysWOW64\\rundll32.exe" | C:\Windows\SysWOW64\rundll32.exe | N/A |
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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2116 wrote to memory of 1992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2116 wrote to memory of 1992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2116 wrote to memory of 1992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2116 wrote to memory of 1992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2116 wrote to memory of 1992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2116 wrote to memory of 1992 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2116 wrote to memory of 1992 | 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\c5d9033a0433e8d19e9f8c1970dc6d5d.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5d9033a0433e8d19e9f8c1970dc6d5d.dll,#1
Network
Files
memory/1992-0-0x0000000077410000-0x00000000774E6000-memory.dmp
memory/1992-1-0x0000000010000000-0x00000000101A4000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-09 11:41
Reported
2024-11-09 11:43
Platform
win10v2004-20241007-en
Max time kernel
94s
Max time network
137s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Gh0st RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Gh0strat
Gh0strat family
PurpleFox
Purplefox family
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Windows\\SysWOW64\\rundll32.exe" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\R: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\W: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\J: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Q: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\O: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Z: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\H: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\L: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\K: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\M: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\T: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\U: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\Y: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\B: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\I: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\N: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\P: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\S: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\V: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\X: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\E: | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened (read-only) | \??\G: | C:\Windows\SysWOW64\rundll32.exe | 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 |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4492 wrote to memory of 3836 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4492 wrote to memory of 3836 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 4492 wrote to memory of 3836 | 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\c5d9033a0433e8d19e9f8c1970dc6d5d.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c5d9033a0433e8d19e9f8c1970dc6d5d.dll,#1
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3836 -ip 3836
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 740
Network
| Country | Destination | Domain | Proto |
| HK | 103.97.229.54:630 | tcp | |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 54.229.97.103.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 80.82.67.80.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 105.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.82.67.80.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 115.108.222.173.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
Files
memory/3836-0-0x0000000077951000-0x0000000077A71000-memory.dmp
memory/3836-1-0x0000000010000000-0x00000000101A4000-memory.dmp