Analysis Overview
SHA256
94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c
Threat Level: Known bad
The file 94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c was found to be: Known bad.
Malicious Activity Summary
Detect PurpleFox Rootkit
Gh0st RAT payload
PurpleFox
Gh0strat
Drops file in Drivers directory
Sets service image path in registry
Deletes itself
Executes dropped EXE
Loads dropped DLL
Drops file in Program Files directory
Unsigned PE
Suspicious use of WriteProcessMemory
Runs ping.exe
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-18 09:39
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-18 09:39
Reported
2024-06-18 09:41
Platform
win7-20240611-en
Max time kernel
145s
Max time network
149s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Gh0st RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Gh0strat
PurpleFox
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\QAssist.sys | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Google\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Google\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe
"C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe"
C:\Program Files (x86)\Google\Skcsk.exe
"C:\Program Files (x86)\Google\Skcsk.exe" -auto
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\945371~1.EXE > nul
C:\Program Files (x86)\Google\Skcsk.exe
"C:\Program Files (x86)\Google\Skcsk.exe" -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
Network
| Country | Destination | Domain | Proto |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp |
Files
memory/2124-0-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Program Files (x86)\Google\Skcsk.exe
| MD5 | 4e2fe8d8ace83fc0f7d943e412e0a25f |
| SHA1 | 9dba5ae7134880abd25eae481e1fd3f2e3b8bcbd |
| SHA256 | 94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c |
| SHA512 | 8c2097d4aff23adc23a30934e39c7b69cd271b48102d04e6211e8bfb1571bfbaaba3490c27e9dfdee6b669d7080cdc08409b95979089ba271e2be6889b33e9bd |
memory/2652-18-0x0000000010000000-0x000000001019F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-18 09:39
Reported
2024-06-18 09:41
Platform
win10v2004-20240508-en
Max time kernel
145s
Max time network
149s
Command Line
Signatures
Detect PurpleFox Rootkit
| 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 |
Gh0st RAT 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 |
Gh0strat
PurpleFox
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\QAssist.sys | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Google\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Google\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
Suspicious behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe
"C:\Users\Admin\AppData\Local\Temp\94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c.exe"
C:\Program Files (x86)\Google\Skcsk.exe
"C:\Program Files (x86)\Google\Skcsk.exe" -auto
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\945371~1.EXE > nul
C:\Program Files (x86)\Google\Skcsk.exe
"C:\Program Files (x86)\Google\Skcsk.exe" -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp | |
| CN | 47.94.123.29:7771 | tcp |
Files
memory/372-0-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Program Files (x86)\Google\Skcsk.exe
| MD5 | 4e2fe8d8ace83fc0f7d943e412e0a25f |
| SHA1 | 9dba5ae7134880abd25eae481e1fd3f2e3b8bcbd |
| SHA256 | 94537143b04be62b1009a66f2f7b817007f6bab197ea302cc50bcc2ff8ea854c |
| SHA512 | 8c2097d4aff23adc23a30934e39c7b69cd271b48102d04e6211e8bfb1571bfbaaba3490c27e9dfdee6b669d7080cdc08409b95979089ba271e2be6889b33e9bd |
memory/3496-10-0x0000000010000000-0x000000001019F000-memory.dmp
memory/232-17-0x0000000010000000-0x000000001019F000-memory.dmp