Threat Actor Profile
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
Tags
First Seen
Unknown
Last Updated
Unknown
Active Status
ActiveCreated
April 29, 2026
Indicators of Compromise
Loading IOCs…
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': []}