Analysis Overview
SHA256
428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e
Threat Level: Known bad
The file 428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e was found to be: Known bad.
Malicious Activity Summary
Purplefox family
Detect PurpleFox Rootkit
PurpleFox
Executes dropped EXE
Loads dropped DLL
Drops file in System32 directory
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of AdjustPrivilegeToken
System policy modification
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-07 10:09
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Purplefox family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-07 10:09
Reported
2024-11-07 10:11
Platform
win7-20240903-en
Max time kernel
146s
Max time network
125s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
PurpleFox
Purplefox family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Mfiqc.exe | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Mfiqc.exe | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.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\Mfiqc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00bc000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99\WpadDecisionTime = c0deca17fd30db01 | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99\WpadDecision = "0" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99 | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454} | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadDecisionReason = "1" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadDecision = "0" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\a6-19-4e-b4-0b-99 | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadDecisionTime = c0deca17fd30db01 | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7C600502-6452-49B1-BE41-03D454CA9454}\WpadNetworkName = "Network 3" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-19-4e-b4-0b-99\WpadDecisionReason = "1" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeSecurityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1664 wrote to memory of 2320 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | C:\Windows\SysWOW64\Mfiqc.exe |
| PID 1664 wrote to memory of 2320 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | C:\Windows\SysWOW64\Mfiqc.exe |
| PID 1664 wrote to memory of 2320 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | C:\Windows\SysWOW64\Mfiqc.exe |
| PID 1664 wrote to memory of 2320 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | C:\Windows\SysWOW64\Mfiqc.exe |
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\SoftwareSASGeneration = "3" | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe
"C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe"
C:\Windows\SysWOW64\Mfiqc.exe
C:\Windows\SysWOW64\Mfiqc.exe -auto
C:\Windows\SysWOW64\Mfiqc.exe
C:\Windows\SysWOW64\Mfiqc.exe -acsi
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | qifu-api.baidubce.com | udp |
| CN | 110.242.68.112:443 | qifu-api.baidubce.com | tcp |
| CN | 124.237.176.106:443 | qifu-api.baidubce.com | tcp |
| CN | 111.206.209.154:443 | qifu-api.baidubce.com | tcp |
| US | 8.8.8.8:53 | myip.ipip.net | udp |
| US | 104.22.30.153:80 | myip.ipip.net | tcp |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp |
Files
C:\Windows\SysWOW64\Mfiqc.exe
| MD5 | 6f6bb833a8191f08decacba9730e6d7d |
| SHA1 | 0597752575d4f9b9d71f5951506f6a0a6b4645e7 |
| SHA256 | 428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e |
| SHA512 | 7e143310c40100b1ce85504e755a8686d5a5345e03fae4f28e618102ac2e852edee0e004524204cdbb1d3f0a6b411a4c7c037cb7bb8f5111a68ac4ca945013b6 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-07 10:09
Reported
2024-11-07 10:11
Platform
win10v2004-20241007-en
Max time kernel
150s
Max time network
152s
Command Line
Signatures
Detect PurpleFox Rootkit
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
PurpleFox
Purplefox family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\Mfiqc.exe | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
| File created | C:\Windows\SysWOW64\Mfiqc.exe | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeSecurityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Token: 33 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\SysWOW64\Mfiqc.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4556 wrote to memory of 4608 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | C:\Windows\SysWOW64\Mfiqc.exe |
| PID 4556 wrote to memory of 4608 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | C:\Windows\SysWOW64\Mfiqc.exe |
| PID 4556 wrote to memory of 4608 | N/A | C:\Windows\SysWOW64\Mfiqc.exe | C:\Windows\SysWOW64\Mfiqc.exe |
System policy modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\SoftwareSASGeneration = "3" | C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe
"C:\Users\Admin\AppData\Local\Temp\428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e.exe"
C:\Windows\SysWOW64\Mfiqc.exe
C:\Windows\SysWOW64\Mfiqc.exe -auto
C:\Windows\SysWOW64\Mfiqc.exe
C:\Windows\SysWOW64\Mfiqc.exe -acsi
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | qifu-api.baidubce.com | udp |
| CN | 182.61.62.106:443 | qifu-api.baidubce.com | tcp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| CN | 111.206.209.154:443 | qifu-api.baidubce.com | tcp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.117.19.2.in-addr.arpa | udp |
| CN | 182.61.200.153:443 | qifu-api.baidubce.com | tcp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | myip.ipip.net | udp |
| US | 104.22.31.153:80 | myip.ipip.net | tcp |
| US | 8.8.8.8:53 | 153.31.22.104.in-addr.arpa | udp |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| N/A | 127.0.0.1:18926 | tcp | |
| US | 8.8.8.8:53 | 200.201.50.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:18926 | tcp |
Files
C:\Windows\SysWOW64\Mfiqc.exe
| MD5 | 6f6bb833a8191f08decacba9730e6d7d |
| SHA1 | 0597752575d4f9b9d71f5951506f6a0a6b4645e7 |
| SHA256 | 428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e |
| SHA512 | 7e143310c40100b1ce85504e755a8686d5a5345e03fae4f28e618102ac2e852edee0e004524204cdbb1d3f0a6b411a4c7c037cb7bb8f5111a68ac4ca945013b6 |