Detection rules › Sigma

HackTool - HollowReaper Execution

Severity
high
Author
Swachchhanda Shrawan Poudel (Nextron Systems)
Source
upstream

Detects usage of HollowReaper, a process hollowing shellcode launcher used for stealth payload execution through process hollowing. It replaces the memory of a legitimate process with custom shellcode, allowing the attacker to execute payloads under the guise of trusted binaries.

MITRE ATT&CK coverage

TacticTechniques
Privilege EscalationT1055.012 Process Injection: Process Hollowing
Defense EvasionT1055.012 Process Injection: Process Hollowing

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation
Security-Auditing4688A new process has been created.

Stages and Predicates

Stage 1: selection

Image|endswith: '\HollowReaper.exe'

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
Imageends_with
  • \HollowReaper.exe