Sigma rule: Suspicious HWP Sub Processes
A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-22799bd73adb, updated 2021-11-27T00:00:00.000Z.
Rule
- Title
- Suspicious HWP Sub Processes
- Status
- test
- Level
- high
- Author
- Florian Roth (Nextron Systems)
- Date
- 2019-10-24
- Modified
- 2021-11-27
- File
- rules/windows/process_creation/proc_creation_win_hwp_exploits.yml
- Commit
- ccbb0369507f796db0b0ae6854c8a2be471b9d84
Detects suspicious Hangul Word Processor (Hanword) sub processes that could indicate an exploitation
Log source
- product
- windows
- category
- process_creation
Detection
selection:
ParentImage|endswith: '\Hwp.exe'
Image|endswith: '\gbb.exe'
condition: selectionFalse positives (as the rule lists them)
- Unknown
Tags
- attack.initial-access
- attack.t1566.001
- attack.execution
- attack.t1203
- attack.t1059.003
- attack.g0032
MITRE ATT&CK ids this rule names
References
- https://www.securitynewspaper.com/2016/11/23/technical-teardown-exploit-malware-hwp-files/
- https://www.hybrid-analysis.com/search?query=context:74940dcc5b38f9f9b1a0fea760d344735d7d91b610e6d5bd34533dd0153402c5&from_sample=5db135000388385a7644131f&block_redirect=1
- https://twitter.com/cyberwar_15/status/1187287262054076416
- https://blog.alyac.co.kr/1901
- https://en.wikipedia.org/wiki/Hangul_(word_processor)
Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_hwp_exploits.yml
Sources and licences
SigmaHQ
"Suspicious HWP Sub Processes" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_hwp_exploits.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Cite this page
Dragons Eye Ransomware Tracker, "Sigma rule: Suspicious HWP Sub Processes",
entity page, dataset version ref-22799bd73adb, updated 2021-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/023394c4-29d5-46ab-92b8-6a534c6f447b (accessed 2026-11-03).
Underlying source: SigmaHQ rule 023394c4-29d5-46ab-92b8-6a534c6f447b, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.