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Threat Group Cards: A Threat Actor Encyclopedia

Permanent link Tool: AtomSilo

NamesAtomSilo
CategoryMalware
TypeRansomware
DescriptionAccording to PCrisk, AtomSilo is a type of malware that blocks access to files by encrypting them and renames every encrypted file by appending the '.ATOMSILO' to its filename. It renames '1.jpg' to '1.jpg.ATOMSILO', '2.jpg' to '2.jpg.ATOMSILO', and so on. As its ransom note, AtomSilo creates the 'README-FILE-#COMPUTER-NAME#-#CREATION-TIME#.hta' file.
Information<https://chuongdong.com//reverse%20engineering/2021/10/13/AtomSiloRansomware/>
<https://www.microsoft.com/security/blog/2022/05/09/ransomware-as-a-service-understanding-the-cybercrime-gig-economy-and-how-to-protect-yourself>
<https://news.sophos.com/en-us/2021/10/04/atom-silo-ransomware-actors-use-confluence-exploit-dll-side-load-for-stealthy-attack/>
<https://www.secureworks.com/research/bronze-starlight-ransomware-operations-use-hui-loader>
<https://chuongdong.com/reverse%20engineering/2021/10/13/AtomSiloRansomware/>
<https://decoded.avast.io/threatintel/decryptor-for-atomsilo-and-lockfile-ransomware/>
<https://twitter.com/siri_urz/status/1437664046556274694?s=20>
<https://www.zscaler.com/blogs/security-research/atomsilo-ransomware-enters-league-double-extortion>
<https://news.sophos.com/en-us/2022/03/17/the-ransomware-threat-intelligence-center/>
Malpedia<https://malpedia.caad.fkie.fraunhofer.de/details/win.atomsilo>

Last change to this tool card: 30 November 2023

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All groups using tool AtomSilo

ChangedNameCountryObserved

APT groups

 Bronze StarlightChina2021-Mar 2023 

1 group listed (1 APT, 0 other, 0 unknown)

Digital Service Security Center
Electronic Transactions Development Agency

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