Threat Actor Profile
Low Cybercriminal
Description

A Windows ransomware that will run certain tasks to prepare the target system for the encryption of files. MedusaLocker avoids executable files, probably to avoid rendering the targeted system unusable for paying the ransom. It uses a combination of AES and RSA-2048, and reportedly appends extensions such as .encrypted, .bomber, .boroff, .breakingbad, .locker16, .newlock, .nlocker, and .skynet.

Confidence Score
100%
Tags
ransomware ransomware.live
First Seen

Unknown

Last Updated

Unknown

Active Status
Active
Created

April 29, 2026

Indicators of Compromise

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IOC KQL for Sentinel
STIX Data
{'added_date': None,
 'client': '2003264@sit.singaporetech.edu.sg',
 'description': 'A Windows ransomware that will run certain tasks to prepare '
                'the target system for the encryption of files. MedusaLocker '
                'avoids executable files, probably to avoid rendering the '
                'targeted system unusable for paying the ransom. It uses a '
                'combination of AES and RSA-2048, and reportedly appends '
                'extensions such as .encrypted, .bomber, .boroff, '
                '.breakingbad, .locker16, .newlock, .nlocker, and .skynet.',
 'firstseen': None,
 'group': 'ako',
 'has_negotiations': False,
 'has_ransomnote': True,
 'lastseen': None,
 'locations': [{'available': False,
                'fqdn': 'kwvhrdibgmmpkhkidrby4mccwqpds5za6uo2thcw5gz75qncv7rbhyad.onion',
                'slug': 'http://kwvhrdibgmmpkhkidrby4mccwqpds5za6uo2thcw5gz75qncv7rbhyad.onion',
                'title': '',
                'type': 'Chat'}],
 'negotiation_count': 0,
 'ransomnotes_count': 1,
 'tiaras_metadata': {'has_negotiations': False,
                     'has_ransomnote': True,
                     'locations': [{'available': False,
                                    'fqdn': 'kwvhrdibgmmpkhkidrby4mccwqpds5za6uo2thcw5gz75qncv7rbhyad.onion',
                                    'slug': 'http://kwvhrdibgmmpkhkidrby4mccwqpds5za6uo2thcw5gz75qncv7rbhyad.onion',
                                    'title': '',
                                    'type': 'Chat'}],
                     'negotiation_count': 0,
                     'ransomnotes_count': 1,
                     'ransomware_live_group': 'ako',
                     'tools': {},
                     'url': 'https://www.ransomware.live/group/ako',
                     'victims': 0,
                     'vulnerabilities': []},
 'tiaras_source': 'ransomware.live',
 'tools': {},
 'ttps': [],
 'url': 'https://www.ransomware.live/group/ako',
 'victims': 0,
 'vulnerabilities': []}
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