HH.EXE Execution

 1title: HH.EXE Execution
 2id: 68c8acb4-1b60-4890-8e82-3ddf7a6dba84
 3status: test
 4description: Detects the execution of "hh.exe" to open ".chm" files.
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.001/T1218.001.md
 7    - https://eqllib.readthedocs.io/en/latest/analytics/b25aa548-7937-11e9-8f5c-d46d6d62a49e.html
 8    - https://www.zscaler.com/blogs/security-research/unintentional-leak-glimpse-attack-vectors-apt37
 9author: E.M. Anhaus (originally from Atomic Blue Detections, Dan Beavin), oscd.community
10date: 2019-10-24
11modified: 2023-12-11
12tags:
13    - attack.defense-evasion
14    - attack.t1218.001
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection_img:
20        - OriginalFileName: 'HH.exe'
21        - Image|endswith: '\hh.exe'
22    selection_cli:
23        CommandLine|contains: '.chm'
24    condition: all of selection_*
25falsepositives:
26    - False positives are expected with legitimate ".CHM"
27level: low

References

• atomic-red-team/atomics/T1218.001/T1218.001.md at f339e7da7d05f6057fdfcdd3742bfcf365fee2a9 · redcanaryco/atomic-red-team

  

  Small and highly portable detection tests based on MITRE's ATT&CK. - redcanaryco/atomic-red-team

  
  Read More

• HH.exe execution — EQL Analytics Library documentation

  © Copyright 2019, Endgame Revision 30243396.

  
  Read More

• The Unintentional Leak: A glimpse into the attack vectors of APT37

  

  An operational security failure by the North Korean threat actor - APT37, led to the discovery of many previously unknown tools and techniques used by them

  
  Read More

Related rules

• HTML Help HH.EXE Suspicious Child Process
• Suspicious HH.EXE Execution
• AD Object WriteDAC Access
• ADS Zone.Identifier Deleted By Uncommon Application
• AMSI Bypass Pattern Assembly GetType