purplefox | 20ad1e6af5c86cb19ced3387f0a7928d98d5b62537d525d1a63e3ecd4a039bba

Modify Existing Service

T1031

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	f96ad2108001929ccc0d4244215239f8.exe

PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Sality
Sality is backdoor written in C++, first discovered in 2003.
backdoor sality

UAC bypass 3 TTPs 1 IoCs

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	f96ad2108001929ccc0d4244215239f8.exe

Windows security bypass 2 TTPs 6 IoCs

Disabling Security Tools

Modify Registry

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe

UPX packed file 31 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1700-54-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-56-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-57-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-60-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-65-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-73-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-74-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-75-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-77-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-82-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-83-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-85-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-87-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral1/memory/1700-90-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral1/memory/1700-91-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral1/memory/1700-92-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral1/memory/1700-93-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-96-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-107-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-108-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-109-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-112-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-122-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-124-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-125-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-126-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-131-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-133-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-137-0x0000000010000000-0x0000000010040000-memory.dmp	upx
behavioral1/memory/1700-136-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx
behavioral1/memory/1700-223-0x0000000001E80000-0x0000000002F0E000-memory.dmp	upx

Windows security modification 2 TTPs 7 IoCs

Disabling Security Tools

Modify Registry

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	f96ad2108001929ccc0d4244215239f8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc	f96ad2108001929ccc0d4244215239f8.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	f96ad2108001929ccc0d4244215239f8.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
File opened (read-only)	\??\L:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\S:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\T:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\U:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\V:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\B:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\H:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\K:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\Z:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\W:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\F:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\I:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\O:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\P:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\R:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\X:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\J:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\M:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\N:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\Y:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\E:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\G:	f96ad2108001929ccc0d4244215239f8.exe
File opened (read-only)	\??\Q:	f96ad2108001929ccc0d4244215239f8.exe

Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media
T1091

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description ioc process

File opened for modification C:\autorun.inf f96ad2108001929ccc0d4244215239f8.exe
Drops file in Program Files directory 1 IoCs

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description ioc process

File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe f96ad2108001929ccc0d4244215239f8.exe
Drops file in Windows directory 1 IoCs

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description ioc process

File opened for modification C:\Windows\SYSTEM.INI f96ad2108001929ccc0d4244215239f8.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\autorun.inf	f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe	f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
File opened for modification	C:\Windows\SYSTEM.INI	f96ad2108001929ccc0d4244215239f8.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f96ad2108001929ccc0d4244215239f8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	f96ad2108001929ccc0d4244215239f8.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

f96ad2108001929ccc0d4244215239f8.exe

pid	process
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe
1700	f96ad2108001929ccc0d4244215239f8.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	pid	process
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe
Token: SeDebugPrivilege	1700	f96ad2108001929ccc0d4244215239f8.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	pid	process	target process
PID 1700 wrote to memory of 1224	1700	f96ad2108001929ccc0d4244215239f8.exe	taskhost.exe
PID 1700 wrote to memory of 1300	1700	f96ad2108001929ccc0d4244215239f8.exe	Dwm.exe
PID 1700 wrote to memory of 1344	1700	f96ad2108001929ccc0d4244215239f8.exe	Explorer.EXE
PID 1700 wrote to memory of 1224	1700	f96ad2108001929ccc0d4244215239f8.exe	taskhost.exe
PID 1700 wrote to memory of 1300	1700	f96ad2108001929ccc0d4244215239f8.exe	Dwm.exe
PID 1700 wrote to memory of 1344	1700	f96ad2108001929ccc0d4244215239f8.exe	Explorer.EXE
PID 1700 wrote to memory of 1224	1700	f96ad2108001929ccc0d4244215239f8.exe	taskhost.exe
PID 1700 wrote to memory of 1300	1700	f96ad2108001929ccc0d4244215239f8.exe	Dwm.exe
PID 1700 wrote to memory of 1344	1700	f96ad2108001929ccc0d4244215239f8.exe	Explorer.EXE
PID 1700 wrote to memory of 1224	1700	f96ad2108001929ccc0d4244215239f8.exe	taskhost.exe
PID 1700 wrote to memory of 1300	1700	f96ad2108001929ccc0d4244215239f8.exe	Dwm.exe
PID 1700 wrote to memory of 1344	1700	f96ad2108001929ccc0d4244215239f8.exe	Explorer.EXE
PID 1700 wrote to memory of 1224	1700	f96ad2108001929ccc0d4244215239f8.exe	taskhost.exe
PID 1700 wrote to memory of 1300	1700	f96ad2108001929ccc0d4244215239f8.exe	Dwm.exe
PID 1700 wrote to memory of 1344	1700	f96ad2108001929ccc0d4244215239f8.exe	Explorer.EXE

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

f96ad2108001929ccc0d4244215239f8.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	f96ad2108001929ccc0d4244215239f8.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1344

C:\Users\Admin\AppData\Local\Temp\f96ad2108001929ccc0d4244215239f8.exe
"C:\Users\Admin\AppData\Local\Temp\f96ad2108001929ccc0d4244215239f8.exe"
2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in Program Files directory
- Drops file in Windows directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1700

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1300

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1224

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Modify Registry

5

Bypass User Account Control

T1088

Disabling Security Tools

3

Credential Access

Discovery

System Information Discovery

4

Query Registry

2

T1012

Peripheral Device Discovery

T1120

Lateral Movement

Replication Through Removable Media