Analysis Overview
SHA256
cb36447214f19713d40b07de0ed7e5b828f5961a2970eb5409b90d073a05f312
Threat Level: Known bad
The file 3311b8c3707f75831aa443db406c71e0.bin was found to be: Known bad.
Malicious Activity Summary
Detect PurpleFox Rootkit
PurpleFox
Gh0strat
Gh0st RAT payload
Drops file in Drivers directory
Sets service image path in registry
Deletes itself
Loads dropped DLL
Executes dropped EXE
Drops file in System32 directory
Unsigned PE
Modifies data under HKEY_USERS
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: LoadsDriver
Suspicious use of WriteProcessMemory
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-05 01:52
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-05 01:52
Reported
2024-06-05 01:55
Platform
win7-20240221-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 |
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Gh0st RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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Gh0strat
PurpleFox
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\QAssist.sys | C:\Windows\SysWOW64\Meume.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\Meume.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\Meume.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Meume.exe | C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Meume.exe | C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\Meume.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\Meume.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\Meume.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\Meume.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\Meume.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe
"C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe"
C:\Windows\SysWOW64\Meume.exe
C:\Windows\SysWOW64\Meume.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\364B08~1.EXE > nul
C:\Windows\SysWOW64\Meume.exe
C:\Windows\SysWOW64\Meume.exe -acsi
C:\Windows\SysWOW64\PING.EXE
ping -n 2 127.0.0.1
Network
| Country | Destination | Domain | Proto |
| CN | 82.157.201.41:8080 | tcp | |
| CN | 82.157.201.41:8080 | tcp | |
| CN | 82.157.201.41:8080 | tcp | |
| CN | 82.157.201.41:8080 | tcp | |
| CN | 82.157.201.41:8080 | tcp | |
| CN | 82.157.201.41:8080 | tcp | |
| CN | 82.157.201.41:8080 | tcp |
Files
memory/1940-1-0x0000000000020000-0x0000000000021000-memory.dmp
memory/1940-0-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/1940-2-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Windows\SysWOW64\Meume.exe
| MD5 | 3311b8c3707f75831aa443db406c71e0 |
| SHA1 | ad5ebc62c45287e67febc164b7b7b876b82b6a5d |
| SHA256 | 364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7 |
| SHA512 | 86cc39e7c4b82f03d0f4b3f2d7021626b7294c0ec909152a457f73ce829923934daae696ffd5306edde43f807f1ed35261e25093e47c8645a5d37317ec87c19f |
memory/2968-11-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/1940-21-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/2968-23-0x0000000001220000-0x00000000013D8000-memory.dmp
memory/2968-24-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/3052-22-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/3052-25-0x0000000010000000-0x000000001019F000-memory.dmp
memory/3052-40-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/3052-41-0x0000000000020000-0x0000000000021000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-05 01:52
Reported
2024-06-05 01:55
Platform
win10v2004-20240508-en
Max time kernel
145s
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 |
| N/A | N/A | N/A | N/A |
| 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 |
| N/A | N/A | N/A | N/A |
| 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:\Windows\SysWOW64\Meume.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\Meume.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Meume.exe | C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Meume.exe | C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\Meume.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\Meume.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\Meume.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\Meume.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Meume.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe
"C:\Users\Admin\AppData\Local\Temp\364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7.exe"
C:\Windows\SysWOW64\Meume.exe
C:\Windows\SysWOW64\Meume.exe -auto
C:\Windows\SysWOW64\Meume.exe
C:\Windows\SysWOW64\Meume.exe -acsi
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\364B08~1.EXE > nul
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 | 82.157.201.41:8080 | tcp | |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| CN | 82.157.201.41:8080 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| CN | 82.157.201.41:8080 | tcp | |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| CN | 82.157.201.41:8080 | tcp | |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| CN | 82.157.201.41:8080 | 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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| CN | 82.157.201.41:8080 | tcp | |
| CN | 82.157.201.41:8080 | tcp |
Files
memory/3764-1-0x00000000001D0000-0x00000000001D1000-memory.dmp
memory/3764-0-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/3764-2-0x0000000010000000-0x000000001019F000-memory.dmp
C:\Windows\SysWOW64\Meume.exe
| MD5 | 3311b8c3707f75831aa443db406c71e0 |
| SHA1 | ad5ebc62c45287e67febc164b7b7b876b82b6a5d |
| SHA256 | 364b087a1916c5f13675449a4470763adebd4977fc21ea2169d8d67b11e83ba7 |
| SHA512 | 86cc39e7c4b82f03d0f4b3f2d7021626b7294c0ec909152a457f73ce829923934daae696ffd5306edde43f807f1ed35261e25093e47c8645a5d37317ec87c19f |
memory/1820-13-0x00000000001C0000-0x00000000001C1000-memory.dmp
memory/1820-12-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/1820-14-0x0000000010000000-0x000000001019F000-memory.dmp
memory/3764-21-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/1820-24-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/4508-23-0x0000000000400000-0x00000000005B8000-memory.dmp
memory/4508-22-0x0000000000020000-0x0000000000021000-memory.dmp
memory/4508-25-0x0000000010000000-0x000000001019F000-memory.dmp
memory/4508-40-0x0000000000020000-0x0000000000021000-memory.dmp
memory/4508-41-0x0000000000400000-0x00000000005B8000-memory.dmp