HackTool - HandleKatz LSASS Dumper Execution

Hunt Hypothesis

Detects the use of HandleKatz, a tool that demonstrates the usage of cloned handles to Lsass in order to create an obfuscated memory dump of the same

Detection Rule

Sigma (Original)

title: HackTool - HandleKatz LSASS Dumper Execution
id: ca621ba5-54ab-4035-9942-d378e6fcde3c
status: test
description: Detects the use of HandleKatz, a tool that demonstrates the usage of cloned handles to Lsass in order to create an obfuscated memory dump of the same
references:
    - https://github.com/codewhitesec/HandleKatz
author: Florian Roth (Nextron Systems)
date: 2022-08-18
modified: 2024-11-23
tags:
    - attack.credential-access
    - attack.t1003.001
logsource:
    category: process_creation
    product: windows
detection:
    selection_loader_img:
        Image|endswith: '\loader.exe'
        CommandLine|contains: '--pid:'
    selection_loader_imphash:
        Hashes|contains:
            - 'IMPHASH=38D9E015591BBFD4929E0D0F47FA0055'
            - 'IMPHASH=0E2216679CA6E1094D63322E3412D650'
    selection_flags:
        CommandLine|contains|all:
            - '--pid:'
            - '--outfile:'
        CommandLine|contains:
            - '.dmp'
            - 'lsass'
            - '.obf'
            - 'dump'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: high

KQL (Azure Sentinel)

imProcessCreate
| where (TargetProcessName endswith "\\loader.exe" and TargetProcessCommandLine contains "--pid:") or (TargetProcessIMPHASH startswith "38D9E015591BBFD4929E0D0F47FA0055" or TargetProcessIMPHASH startswith "0E2216679CA6E1094D63322E3412D650") or ((TargetProcessCommandLine contains "--pid:" and TargetProcessCommandLine contains "--outfile:") and (TargetProcessCommandLine contains ".dmp" or TargetProcessCommandLine contains "lsass" or TargetProcessCommandLine contains ".obf" or TargetProcessCommandLine contains "dump"))

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Tactic: Credential Access
• Technique: T1003.001 — T1003.001

References

• https://github.com/codewhitesec/HandleKatz
• SigmaHQ Rule