darkcomet | 87a862ecd148181c318d98a64f0cb24ae19d1ebcabf379f0d8254181ffb2cd0b

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\winlogon\\winlogon.exe"	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe

Modifies firewall policy service 3 TTPs 3 IoCs

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	winlogon.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	winlogon.exe

Modifies security service 2 TTPs 1 IoCs

Modify Registry

Windows Service

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	winlogon.exe

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
Ramnit family
ramnit

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winlogon.exe

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	winlogon.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 4 IoCs

pid	Process
1952	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe
792	DesktopLayer.exe
2832	winlogon.exe
2732	winlogonSrv.exe

Loads dropped DLL 5 IoCs

pid	Process
2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
1952	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe
2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
2832	winlogon.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winlogon.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon.exe = "C:\\Windows\\system32\\winlogon\\winlogon.exe"	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon.exe = "C:\\Windows\\system32\\winlogon\\winlogon.exe"	winlogon.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\winlogon\winlogon.exe	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
File opened for modification	C:\Windows\SysWOW64\winlogon\	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
File created	C:\Windows\SysWOW64\winlogon\winlogonSrv.exe	winlogon.exe
File created	C:\Windows\SysWOW64\winlogon\winlogon.exe	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe

UPX packed file 17 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2500-0-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/files/0x00080000000120fe-2.dat	upx
behavioral1/memory/2500-4-0x0000000000240000-0x000000000026E000-memory.dmp	upx
behavioral1/memory/1952-11-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/1952-8-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/2500-19-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/memory/792-22-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/792-21-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/792-24-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/792-26-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x0007000000016d55-28.dat	upx
behavioral1/memory/2732-48-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/2832-41-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/memory/2832-209-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/memory/2832-518-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/memory/2832-520-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/memory/2832-522-0x0000000000400000-0x00000000004E7000-memory.dmp	upx

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	winlogonSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxC2B3.tmp	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxC41A.tmp	winlogonSrv.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 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	DesktopLayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogonSrv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "442069122"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{1C308311-C9CE-11EF-8A1D-72B582744574} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\SearchScopes	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff3d0000003d000000c3040000a2020000	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\SearchScopes\DownloadRetries = "2"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
792	DesktopLayer.exe
792	DesktopLayer.exe
792	DesktopLayer.exe
792	DesktopLayer.exe
2732	winlogonSrv.exe
2732	winlogonSrv.exe
2732	winlogonSrv.exe
2732	winlogonSrv.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2832	winlogon.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeSecurityPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeTakeOwnershipPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeLoadDriverPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeSystemProfilePrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeSystemtimePrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeProfSingleProcessPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeIncBasePriorityPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeCreatePagefilePrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeBackupPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeRestorePrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeShutdownPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeDebugPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeSystemEnvironmentPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeChangeNotifyPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeRemoteShutdownPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeUndockPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeManageVolumePrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeImpersonatePrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeCreateGlobalPrivilege	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: 33	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: 34	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: 35	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
Token: SeIncreaseQuotaPrivilege	2832	winlogon.exe
Token: SeSecurityPrivilege	2832	winlogon.exe
Token: SeTakeOwnershipPrivilege	2832	winlogon.exe
Token: SeLoadDriverPrivilege	2832	winlogon.exe
Token: SeSystemProfilePrivilege	2832	winlogon.exe
Token: SeSystemtimePrivilege	2832	winlogon.exe
Token: SeProfSingleProcessPrivilege	2832	winlogon.exe
Token: SeIncBasePriorityPrivilege	2832	winlogon.exe
Token: SeCreatePagefilePrivilege	2832	winlogon.exe
Token: SeBackupPrivilege	2832	winlogon.exe
Token: SeRestorePrivilege	2832	winlogon.exe
Token: SeShutdownPrivilege	2832	winlogon.exe
Token: SeDebugPrivilege	2832	winlogon.exe
Token: SeSystemEnvironmentPrivilege	2832	winlogon.exe
Token: SeChangeNotifyPrivilege	2832	winlogon.exe
Token: SeRemoteShutdownPrivilege	2832	winlogon.exe
Token: SeUndockPrivilege	2832	winlogon.exe
Token: SeManageVolumePrivilege	2832	winlogon.exe
Token: SeImpersonatePrivilege	2832	winlogon.exe
Token: SeCreateGlobalPrivilege	2832	winlogon.exe
Token: 33	2832	winlogon.exe
Token: 34	2832	winlogon.exe
Token: 35	2832	winlogon.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2716	iexplore.exe
2716	iexplore.exe

Suspicious use of SetWindowsHookEx 11 IoCs

pid	Process
2716	iexplore.exe
2716	iexplore.exe
2060	IEXPLORE.EXE
2060	IEXPLORE.EXE
2832	winlogon.exe
2716	iexplore.exe
2716	iexplore.exe
2604	IEXPLORE.EXE
2604	IEXPLORE.EXE
2604	IEXPLORE.EXE
2604	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 55 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 1952	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	30
PID 2500 wrote to memory of 1952	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	30
PID 2500 wrote to memory of 1952	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	30
PID 2500 wrote to memory of 1952	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	30
PID 1952 wrote to memory of 792	1952	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe	31
PID 1952 wrote to memory of 792	1952	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe	31
PID 1952 wrote to memory of 792	1952	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe	31
PID 1952 wrote to memory of 792	1952	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe	31
PID 792 wrote to memory of 2716	792	DesktopLayer.exe	32
PID 792 wrote to memory of 2716	792	DesktopLayer.exe	32
PID 792 wrote to memory of 2716	792	DesktopLayer.exe	32
PID 792 wrote to memory of 2716	792	DesktopLayer.exe	32
PID 2716 wrote to memory of 2060	2716	iexplore.exe	33
PID 2716 wrote to memory of 2060	2716	iexplore.exe	33
PID 2716 wrote to memory of 2060	2716	iexplore.exe	33
PID 2716 wrote to memory of 2060	2716	iexplore.exe	33
PID 2500 wrote to memory of 2832	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	34
PID 2500 wrote to memory of 2832	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	34
PID 2500 wrote to memory of 2832	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	34
PID 2500 wrote to memory of 2832	2500	JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe	34
PID 2832 wrote to memory of 2732	2832	winlogon.exe	35
PID 2832 wrote to memory of 2732	2832	winlogon.exe	35
PID 2832 wrote to memory of 2732	2832	winlogon.exe	35
PID 2832 wrote to memory of 2732	2832	winlogon.exe	35
PID 2732 wrote to memory of 2632	2732	winlogonSrv.exe	37
PID 2732 wrote to memory of 2632	2732	winlogonSrv.exe	37
PID 2732 wrote to memory of 2632	2732	winlogonSrv.exe	37
PID 2732 wrote to memory of 2632	2732	winlogonSrv.exe	37
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2832 wrote to memory of 2884	2832	winlogon.exe	36
PID 2716 wrote to memory of 2604	2716	iexplore.exe	38
PID 2716 wrote to memory of 2604	2716	iexplore.exe	38
PID 2716 wrote to memory of 2604	2716	iexplore.exe	38
PID 2716 wrote to memory of 2604	2716	iexplore.exe	38

System policy modification 1 TTPs 3 IoCs

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	winlogon.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	winlogon.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6c9f7afb7c09c420a413b5f7f2c5cdb0Srv.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:792
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2716
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2716 CREDAT:275457 /prefetch:2
        5⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2060
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2716 CREDAT:209930 /prefetch:2
        5⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2604
- C:\Windows\SysWOW64\winlogon\winlogon.exe
  "C:\Windows\system32\winlogon\winlogon.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Loads dropped DLL
  - Windows security modification
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:2832
- - C:\Windows\SysWOW64\winlogon\winlogonSrv.exe
    C:\Windows\SysWOW64\winlogon\winlogonSrv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2732
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      PID:2632
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry