Analysis Overview
SHA256
4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526
Threat Level: Known bad
The file 4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526 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
Executes dropped EXE
Loads dropped DLL
Deletes itself
Drops file in System32 directory
Unsigned PE
Suspicious use of WriteProcessMemory
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: LoadsDriver
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-18 09:32
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-18 09:32
Reported
2024-06-18 09:35
Platform
win7-20240221-en
Max time kernel
147s
Max time network
148s
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:\Windows\SysWOW64\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:\Windows\SysWOW64\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:\Windows\SysWOW64\Skcsk.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe | N/A |
| File created | C:\Windows\SysWOW64\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.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:\Windows\SysWOW64\Skcsk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe
"C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe"
C:\Windows\SysWOW64\Skcsk.exe
C:\Windows\SysWOW64\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\4DA697~1.EXE > nul
C:\Windows\SysWOW64\Skcsk.exe
C:\Windows\SysWOW64\Skcsk.exe -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
Network
| Country | Destination | Domain | Proto |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp |
Files
memory/2020-0-0x0000000010000000-0x000000001019F000-memory.dmp
memory/2664-19-0x0000000010000000-0x000000001019F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-18 09:32
Reported
2024-06-18 09:35
Platform
win10v2004-20240508-en
Max time kernel
148s
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 |
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:\Windows\SysWOW64\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:\Windows\SysWOW64\Skcsk.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe | N/A |
| File created | C:\Windows\SysWOW64\Skcsk.exe | C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.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:\Windows\SysWOW64\Skcsk.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Skcsk.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe
"C:\Users\Admin\AppData\Local\Temp\4da69759abf3dbd32f4fe04645a947cb1d87fe65482b4954d08c071d7d7e1526.exe"
C:\Windows\SysWOW64\Skcsk.exe
C:\Windows\SysWOW64\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\4DA697~1.EXE > nul
C:\Windows\SysWOW64\Skcsk.exe
C:\Windows\SysWOW64\Skcsk.exe -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
Network
| Country | Destination | Domain | Proto |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp | |
| CN | 103.45.174.206:8080 | tcp |
Files
memory/4008-0-0x0000000010000000-0x000000001019F000-memory.dmp
memory/2944-11-0x0000000010000000-0x000000001019F000-memory.dmp