Detection rules › Sigma

Potential SmadHook.DLL Sideloading

Severity
high
Author
X__Junior (Nextron Systems)
Source
upstream

Detects potential DLL sideloading of "SmadHook.dll", a DLL used by SmadAV antivirus

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1574.001 Hijack Execution Flow: DLL
Privilege EscalationT1574.001 Hijack Execution Flow: DLL
Defense EvasionT1574.001 Hijack Execution Flow: DLL

Event coverage

ProviderEvent IDTitle
Sysmon7Image loaded

Stages and Predicates

Stage 1: selection

or:
ImageLoaded|endswith: '\SmadHook32c.dll'
ImageLoaded|endswith: '\SmadHook64c.dll'

Stage 2: not 1 of filter_main_legit_path

Image: ['C:\Program Files (x86)\SMADAV\SmadavProtect32.exe', 'C:\Program Files (x86)\SMADAV\SmadavProtect64.exe', 'C:\Program Files\SMADAV\SmadavProtect32.exe', 'C:\Program Files\SMADAV\SmadavProtect64.exe']
or:
ImageLoaded|startswith: 'C:\Program Files (x86)\SMADAV\'
ImageLoaded|startswith: 'C:\Program Files\SMADAV\'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
Imageeq
  • C:\Program Files (x86)\SMADAV\SmadavProtect32.exe
  • C:\Program Files (x86)\SMADAV\SmadavProtect64.exe
  • C:\Program Files\SMADAV\SmadavProtect32.exe
  • C:\Program Files\SMADAV\SmadavProtect64.exe
ImageLoadedends_with
  • \SmadHook32c.dll
  • \SmadHook64c.dll
ImageLoadedstarts_with
  • C:\Program Files (x86)\SMADAV\
  • C:\Program Files\SMADAV\