Analysis Overview
SHA256
934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82
Threat Level: Known bad
The file 934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82 was found to be: Known bad.
Malicious Activity Summary
Gh0strat
Detect PurpleFox Rootkit
Gh0st RAT payload
Gh0strat family
Purplefox family
PurpleFox
Drops file in Drivers directory
Sets service image path in registry
Deletes itself
Loads dropped DLL
Executes dropped EXE
Drops file in Program Files directory
Unsigned PE
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Runs ping.exe
Suspicious behavior: LoadsDriver
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-09 06:23
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-09 06:23
Reported
2024-11-09 06:26
Platform
win7-20241010-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
Gh0strat family
PurpleFox
Purplefox family
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\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Google\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.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\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\PING.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
System Network Configuration Discovery: Internet Connection Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\PING.EXE | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.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\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.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\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe
"C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.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\934234~1.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 | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp |
Files
memory/2420-0-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Program Files (x86)\Google\Skcsk.exe
| MD5 | e0c915507befa8295c381d618b0463cf |
| SHA1 | de67e5e8cbf16c0cb2088774fa0cf1d797eaa0e9 |
| SHA256 | 934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82 |
| SHA512 | 799081469c2c50574408065828183d27ea7081298c490bf5246314f8924dac7487b84396ce1113e4df64a04346650cc76ffa6a14ae3483f30dca98daab2a969a |
memory/2452-19-0x0000000010000000-0x000000001019F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-09 06:23
Reported
2024-11-09 06:26
Platform
win10v2004-20241007-en
Max time kernel
145s
Max time network
151s
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
Gh0strat family
PurpleFox
Purplefox family
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\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Google\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.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\PING.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Google\Skcsk.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
System Network Configuration Discovery: Internet Connection Discovery
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\PING.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\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.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\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.exe
"C:\Users\Admin\AppData\Local\Temp\934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82.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\934234~1.EXE > nul
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
C:\Program Files (x86)\Google\Skcsk.exe
"C:\Program Files (x86)\Google\Skcsk.exe" -acsi
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| CN | 8.141.9.141:7771 | tcp | |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| CN | 8.141.9.141:7771 | tcp | |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.190.18.2.in-addr.arpa | udp |
| CN | 8.141.9.141:7771 | tcp | |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| CN | 8.141.9.141:7771 | tcp | |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| CN | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp | |
| CN | 8.141.9.141:7771 | tcp |
Files
memory/1540-0-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Program Files (x86)\Google\Skcsk.exe
| MD5 | e0c915507befa8295c381d618b0463cf |
| SHA1 | de67e5e8cbf16c0cb2088774fa0cf1d797eaa0e9 |
| SHA256 | 934234837baca6ce8c4c81bf09ac1a312cb73be285693b8e6bcdc69a57bb0f82 |
| SHA512 | 799081469c2c50574408065828183d27ea7081298c490bf5246314f8924dac7487b84396ce1113e4df64a04346650cc76ffa6a14ae3483f30dca98daab2a969a |
memory/68-10-0x0000000010000000-0x000000001019F000-memory.dmp
memory/4208-17-0x0000000010000000-0x000000001019F000-memory.dmp