Analysis Overview
SHA256
c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7
Threat Level: Known bad
The file c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7 was found to be: Known bad.
Malicious Activity Summary
Detect PurpleFox Rootkit
Gh0st RAT payload
PurpleFox
Gh0strat
Sets service image path in registry
Drops file in Drivers directory
Deletes itself
Executes dropped EXE
Loads dropped DLL
Drops file in System32 directory
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Runs ping.exe
Suspicious behavior: LoadsDriver
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-01 10:32
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-01 10:32
Reported
2024-06-01 10:35
Platform
win7-20240221-en
Max time kernel
146s
Max time network
150s
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\Vnfvn.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\Vnfvn.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\Vnfvn.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Vnfvn.exe | C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Vnfvn.exe | C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.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\Vnfvn.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe
"C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe"
C:\Windows\SysWOW64\Vnfvn.exe
C:\Windows\SysWOW64\Vnfvn.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\C48CC8~1.EXE > nul
C:\Windows\SysWOW64\Vnfvn.exe
C:\Windows\SysWOW64\Vnfvn.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 | muqi1337.e3.luyouxia.net | udp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| US | 8.8.8.8:53 | muqi1337.e3.luyouxia.net | udp |
| CN | 124.248.69.29:1334 | muqi1337.e3.luyouxia.net | tcp |
| CN | 124.248.69.29:1334 | muqi1337.e3.luyouxia.net | tcp |
| CN | 124.248.69.29:1334 | muqi1337.e3.luyouxia.net | tcp |
| US | 8.8.8.8:53 | muqi1337.e3.luyouxia.net | udp |
| CN | 124.248.69.29:1334 | muqi1337.e3.luyouxia.net | tcp |
Files
memory/756-0-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Windows\SysWOW64\Vnfvn.exe
| MD5 | 50de1c24d99f3ac23650ea1a8d08db8f |
| SHA1 | 2841f67d154bc61b009e007f30c642d85a085cd6 |
| SHA256 | c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7 |
| SHA512 | 58a2e61e96feadaa9009d3db3bb9dac343383321501a50b8d94e5c44c3951a4def19604c5171942bba52d7f222bd14f8c74d6e74a6dd004008cf5b3e0e502755 |
memory/2632-19-0x0000000010000000-0x000000001019F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-01 10:32
Reported
2024-06-01 10:35
Platform
win10v2004-20240508-en
Max time kernel
146s
Max time network
150s
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\Vnfvn.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\Vnfvn.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Vnfvn.exe | C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Vnfvn.exe | C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.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\Vnfvn.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Vnfvn.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe
"C:\Users\Admin\AppData\Local\Temp\c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7.exe"
C:\Windows\SysWOW64\Vnfvn.exe
C:\Windows\SysWOW64\Vnfvn.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\C48CC8~1.EXE > nul
C:\Windows\SysWOW64\Vnfvn.exe
C:\Windows\SysWOW64\Vnfvn.exe -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3740,i,3724086843943218842,1026644135694712596,262144 --variations-seed-version --mojo-platform-channel-handle=3252 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | muqi1337.e3.luyouxia.net | udp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| 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 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | muqi1337.e3.luyouxia.net | udp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| CN | 123.99.198.130:1334 | muqi1337.e3.luyouxia.net | tcp |
| US | 8.8.8.8:53 | muqi1337.e3.luyouxia.net | udp |
| CN | 124.248.69.29:1334 | muqi1337.e3.luyouxia.net | tcp |
Files
memory/4624-1-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Windows\SysWOW64\Vnfvn.exe
| MD5 | 50de1c24d99f3ac23650ea1a8d08db8f |
| SHA1 | 2841f67d154bc61b009e007f30c642d85a085cd6 |
| SHA256 | c48cc81a450e46b2486b3cf19bb11af3620ffa77eea0783d54ac91a1e25866e7 |
| SHA512 | 58a2e61e96feadaa9009d3db3bb9dac343383321501a50b8d94e5c44c3951a4def19604c5171942bba52d7f222bd14f8c74d6e74a6dd004008cf5b3e0e502755 |
memory/1584-11-0x0000000010000000-0x000000001019F000-memory.dmp