neshta | 7cca4f23bd94e5cf9208a12bae1d251a38365c73a89322de96aae09be86f40bf

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	aa1efe82b7a8462a234757d822dd2466.exe

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
Sality
Sality is backdoor written in C++, first discovered in 2003.
backdoor sality

UAC bypass 3 TTPs 1 IoCs

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	aa1efe82b7a8462a234757d822dd2466.exe

Windows security bypass 2 TTPs 6 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Policies\system\DisableRegistryTools = "1"	aa1efe82b7a8462a234757d822dd2466.exe

Disables Task Manager via registry modification
evasion

Executes dropped EXE 1 IoCs

pid	Process
2396	aa1efe82b7a8462a234757d822dd2466.exe

Loads dropped DLL 2 IoCs

pid	Process
2028	aa1efe82b7a8462a234757d822dd2466.exe
2396	aa1efe82b7a8462a234757d822dd2466.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	aa1efe82b7a8462a234757d822dd2466.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2396-13-0x0000000001D80000-0x0000000002E0E000-memory.dmp	upx
behavioral1/memory/2396-15-0x0000000001D80000-0x0000000002E0E000-memory.dmp	upx

Windows security modification 2 TTPs 7 IoCs

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1"	aa1efe82b7a8462a234757d822dd2466.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc	aa1efe82b7a8462a234757d822dd2466.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	aa1efe82b7a8462a234757d822dd2466.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	aa1efe82b7a8462a234757d822dd2466.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	aa1efe82b7a8462a234757d822dd2466.exe
File opened for modification	C:\Windows\SYSTEM.INI	aa1efe82b7a8462a234757d822dd2466.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral1/files/0x000d0000000122e0-5.dat	nsis_installer_1
behavioral1/files/0x000d0000000122e0-2.dat	nsis_installer_1

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	aa1efe82b7a8462a234757d822dd2466.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2396	2028	aa1efe82b7a8462a234757d822dd2466.exe	16
PID 2028 wrote to memory of 2396	2028	aa1efe82b7a8462a234757d822dd2466.exe	16
PID 2028 wrote to memory of 2396	2028	aa1efe82b7a8462a234757d822dd2466.exe	16
PID 2028 wrote to memory of 2396	2028	aa1efe82b7a8462a234757d822dd2466.exe	16

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	aa1efe82b7a8462a234757d822dd2466.exe

C:\Users\Admin\AppData\Local\Temp\aa1efe82b7a8462a234757d822dd2466.exe
"C:\Users\Admin\AppData\Local\Temp\aa1efe82b7a8462a234757d822dd2466.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Local\Temp\3582-490\aa1efe82b7a8462a234757d822dd2466.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\aa1efe82b7a8462a234757d822dd2466.exe"
  2⤵
  - Modifies firewall policy service
  - UAC bypass
  - Windows security bypass
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Loads dropped DLL
  - Windows security modification
  - Checks whether UAC is enabled
  - Drops file in Windows directory
  - System policy modification
  PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control