Detection rules › Sigma

UAC Bypass Using Iscsicpl - ImageLoad

Severity
high
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects the "iscsicpl.exe" UAC bypass technique that leverages a DLL Search Order hijacking technique to load a custom DLL's from temp or a any user controlled location in the users %PATH%

MITRE ATT&CK coverage

TacticTechniques
Privilege EscalationT1548.002 Abuse Elevation Control Mechanism: Bypass User Account Control
Defense EvasionT1548.002 Abuse Elevation Control Mechanism: Bypass User Account Control

Event coverage

ProviderEvent IDTitle
Sysmon7Image loaded

Stages and Predicates

Stage 1: selection

Image: 'C:\Windows\SysWOW64\iscsicpl.exe'
ImageLoaded|endswith: '\iscsiexe.dll'

Stage 2: not filter

ImageLoaded|contains: 'C:\Windows\'
ImageLoaded|contains: iscsiexe.dll

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:\Windows\SysWOW64\iscsicpl.exe
ImageLoadedends_with
  • \iscsiexe.dll
ImageLoadedmatch
  • C:\Windows\
  • iscsiexe.dll