ramnit | 82625d3ec756ae606b729ab6e90c706dd57a83e807e87b06dd3205bdd3638752

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	rundll32mgr.exe

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
Ramnit family
ramnit
Sality
Sality is backdoor written in C++, first discovered in 2003.
backdoor sality
Sality family
sality

UAC bypass 3 TTPs 3 IoCs

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	IEXPLORE.EXE

Windows security bypass 2 TTPs 18 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	rundll32mgr.exe

Executes dropped EXE 2 IoCs

pid	Process
2628	rundll32mgr.exe
2764	WaterMark.exe

Windows security modification 2 TTPs 14 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	rundll32mgr.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	WaterMark.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WaterMark.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	rundll32mgr.exe

Enumerates connected drives 3 TTPs 6 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

T1082

description	ioc	Process
File opened (read-only)	\??\G:	IEXPLORE.EXE
File opened (read-only)	\??\H:	IEXPLORE.EXE
File opened (read-only)	\??\I:	IEXPLORE.EXE
File opened (read-only)	\??\J:	IEXPLORE.EXE
File opened (read-only)	\??\E:	WaterMark.exe
File opened (read-only)	\??\E:	IEXPLORE.EXE

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

UPX packed file 31 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2628-12-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2628-16-0x0000000003230000-0x00000000042BE000-memory.dmp	upx
behavioral2/memory/2764-30-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2628-27-0x0000000003230000-0x00000000042BE000-memory.dmp	upx
behavioral2/memory/2628-9-0x0000000003230000-0x00000000042BE000-memory.dmp	upx
behavioral2/memory/2628-6-0x0000000003230000-0x00000000042BE000-memory.dmp	upx
behavioral2/memory/2628-19-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2628-15-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2628-14-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2628-11-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2628-10-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2628-8-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2764-43-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-59-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-56-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-60-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-51-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-50-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-40-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-45-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2764-44-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-39-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-64-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-63-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-65-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-68-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-69-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-74-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2764-73-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-78-0x00000000031D0000-0x000000000425E000-memory.dmp	upx
behavioral2/memory/2764-76-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxBA38.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SYSTEM.INI	rundll32mgr.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4400	1236	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WaterMark.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 14 IoCs

adware spyware

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{DBEB9C5D-D681-11EF-9361-5EA348B38F9D} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
2764	WaterMark.exe
4472	IEXPLORE.EXE
4472	IEXPLORE.EXE

Suspicious use of AdjustPrivilegeToken 34 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	2764	WaterMark.exe
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE
Token: SeDebugPrivilege	4472	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3356	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3356	iexplore.exe
3356	iexplore.exe
4472	IEXPLORE.EXE
4472	IEXPLORE.EXE
4472	IEXPLORE.EXE
4472	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2628	rundll32mgr.exe
2764	WaterMark.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 1236	2352	rundll32.exe	82
PID 2352 wrote to memory of 1236	2352	rundll32.exe	82
PID 2352 wrote to memory of 1236	2352	rundll32.exe	82
PID 1236 wrote to memory of 2628	1236	rundll32.exe	83
PID 1236 wrote to memory of 2628	1236	rundll32.exe	83
PID 1236 wrote to memory of 2628	1236	rundll32.exe	83
PID 2628 wrote to memory of 2764	2628	rundll32mgr.exe	85
PID 2628 wrote to memory of 2764	2628	rundll32mgr.exe	85
PID 2628 wrote to memory of 2764	2628	rundll32mgr.exe	85
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 792	2764	WaterMark.exe	9
PID 2764 wrote to memory of 796	2764	WaterMark.exe	10
PID 2764 wrote to memory of 316	2764	WaterMark.exe	13
PID 2764 wrote to memory of 2652	2764	WaterMark.exe	44
PID 2764 wrote to memory of 2664	2764	WaterMark.exe	45
PID 2764 wrote to memory of 2912	2764	WaterMark.exe	51
PID 2764 wrote to memory of 3424	2764	WaterMark.exe	56
PID 2764 wrote to memory of 3548	2764	WaterMark.exe	57
PID 2764 wrote to memory of 3732	2764	WaterMark.exe	58
PID 2764 wrote to memory of 3824	2764	WaterMark.exe	59
PID 2764 wrote to memory of 3896	2764	WaterMark.exe	60
PID 2764 wrote to memory of 3984	2764	WaterMark.exe	61
PID 2764 wrote to memory of 3864	2764	WaterMark.exe	62
PID 2764 wrote to memory of 4092	2764	WaterMark.exe	75
PID 2764 wrote to memory of 3144	2764	WaterMark.exe	76
PID 2764 wrote to memory of 2352	2764	WaterMark.exe	81
PID 2764 wrote to memory of 1236	2764	WaterMark.exe	82
PID 2764 wrote to memory of 1236	2764	WaterMark.exe	82
PID 2764 wrote to memory of 1664	2764	WaterMark.exe	86
PID 2764 wrote to memory of 3356	2764	WaterMark.exe	89
PID 2764 wrote to memory of 3356	2764	WaterMark.exe	89
PID 2764 wrote to memory of 1488	2764	WaterMark.exe	90
PID 2764 wrote to memory of 1488	2764	WaterMark.exe	90
PID 3356 wrote to memory of 4472	3356	iexplore.exe	91
PID 3356 wrote to memory of 4472	3356	iexplore.exe	91
PID 3356 wrote to memory of 4472	3356	iexplore.exe	91
PID 2764 wrote to memory of 792	2764	WaterMark.exe	9
PID 2764 wrote to memory of 796	2764	WaterMark.exe	10
PID 2764 wrote to memory of 316	2764	WaterMark.exe	13
PID 2764 wrote to memory of 2652	2764	WaterMark.exe	44
PID 2764 wrote to memory of 2664	2764	WaterMark.exe	45
PID 2764 wrote to memory of 2912	2764	WaterMark.exe	51
PID 2764 wrote to memory of 3424	2764	WaterMark.exe	56
PID 2764 wrote to memory of 3548	2764	WaterMark.exe	57
PID 2764 wrote to memory of 3732	2764	WaterMark.exe	58
PID 2764 wrote to memory of 3824	2764	WaterMark.exe	59
PID 2764 wrote to memory of 3896	2764	WaterMark.exe	60
PID 2764 wrote to memory of 3984	2764	WaterMark.exe	61
PID 2764 wrote to memory of 3864	2764	WaterMark.exe	62
PID 2764 wrote to memory of 4092	2764	WaterMark.exe	75
PID 2764 wrote to memory of 3144	2764	WaterMark.exe	76
PID 2764 wrote to memory of 2352	2764	WaterMark.exe	81
PID 2764 wrote to memory of 3356	2764	WaterMark.exe	89
PID 2764 wrote to memory of 4472	2764	WaterMark.exe	91
PID 2764 wrote to memory of 4472	2764	WaterMark.exe	91
PID 4472 wrote to memory of 792	4472	IEXPLORE.EXE	9

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	rundll32mgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	WaterMark.exe

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:792

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:796

C:\Windows\system32\dwm.exe
"dwm.exe"
1⤵
PID:316

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2652

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2664

C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
1⤵
PID:2912

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\82625d3ec756ae606b729ab6e90c706dd57a83e807e87b06dd3205bdd3638752.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2352
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\82625d3ec756ae606b729ab6e90c706dd57a83e807e87b06dd3205bdd3638752.dll,#1
    3⤵
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1236
  - - C:\Windows\SysWOW64\rundll32mgr.exe
      C:\Windows\SysWOW64\rundll32mgr.exe
      4⤵
      Modifies firewall policy service
      UAC bypass
      Windows security bypass
      Executes dropped EXE
      Windows security modification
      Checks whether UAC is enabled
      Drops file in Program Files directory
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:2628
    - - C:\Program Files (x86)\Microsoft\WaterMark.exe
        
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        5⤵
        Modifies firewall policy service
        UAC bypass
        Windows security bypass
        Executes dropped EXE
        Windows security modification
        Checks whether UAC is enabled
        Enumerates connected drives
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of UnmapMainImage
        Suspicious use of WriteProcessMemory
        System policy modification
        
        PID:2764
      - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        6⤵
        
        PID:1664
      - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3356
        
        C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3356 CREDAT:17410 /prefetch:2
        7⤵
        Modifies firewall policy service
        UAC bypass
        Windows security bypass
        Enumerates connected drives
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4472
      - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        6⤵
        Modifies Internet Explorer settings
        
        PID:1488
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1236 -s 608
      4⤵
      Program crash
      PID:4400

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:3548

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3732

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:3824

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3896

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
PID:3984

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3864

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
1⤵
PID:4092

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1236 -ip 1236
1⤵
PID:536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

Modify Registry