sality | bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91

Modify Existing Service

T1031

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

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

T1089

Modify Registry

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

Windows security bypass 2 TTPs 6 IoCs

Disabling Security Tools

T1089

Modify Registry

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1288-132-0x0000000002250000-0x00000000032DE000-memory.dmp	upx
behavioral2/memory/1288-133-0x0000000031420000-0x000000003143D000-memory.dmp	upx
behavioral2/memory/1288-134-0x0000000002250000-0x00000000032DE000-memory.dmp	upx

Windows security modification 2 TTPs 7 IoCs

Disabling Security Tools

T1089

Modify Registry

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Cryptographic Service = "C:\\Windows\\system32\\tyougoxc.exe"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

Drops file in Windows directory 1 IoCs

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description ioc process

File opened for modification C:\Windows\SYSTEM.INI bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
File opened for modification	C:\Windows\SYSTEM.INI	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

pid	process
1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	pid	process
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
Token: SeDebugPrivilege	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	pid	process	target process
PID 1288 wrote to memory of 792	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	fontdrvhost.exe
PID 1288 wrote to memory of 800	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	fontdrvhost.exe
PID 1288 wrote to memory of 312	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	dwm.exe
PID 1288 wrote to memory of 2356	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	sihost.exe
PID 1288 wrote to memory of 2408	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	svchost.exe
PID 1288 wrote to memory of 2532	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	taskhostw.exe
PID 1288 wrote to memory of 2184	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	Explorer.EXE
PID 1288 wrote to memory of 2980	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	svchost.exe
PID 1288 wrote to memory of 3264	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	DllHost.exe
PID 1288 wrote to memory of 3352	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	StartMenuExperienceHost.exe
PID 1288 wrote to memory of 3424	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	RuntimeBroker.exe
PID 1288 wrote to memory of 3504	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	SearchApp.exe
PID 1288 wrote to memory of 3768	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	RuntimeBroker.exe
PID 1288 wrote to memory of 3404	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	backgroundTaskHost.exe
PID 1288 wrote to memory of 4856	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	backgroundTaskHost.exe
PID 1288 wrote to memory of 692	1288	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe	RuntimeBroker.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

Processes:

bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe

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

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2356

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2408

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:3352

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3264

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
PID:3504

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
1⤵
PID:4856

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:692

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:3404

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3768

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3424

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:2980

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2184

C:\Users\Admin\AppData\Local\Temp\bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe
"C:\Users\Admin\AppData\Local\Temp\bfdd9924903e1a3b2a0308337ba25f6424e771a035d9e023e3bccd42dd0fff91.exe"
2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1288

C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
1⤵
PID:2532

C:\Windows\system32\dwm.exe
"dwm.exe"
1⤵
PID:312

C:\Windows\system32\fontdrvhost.exe
"fontdrvhost.exe"
1⤵
PID:800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

System Information Discovery