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Stealer One is credential-stealing malware used by FIN6 to harvest credentials from web browsers, email applications, and file-transfer utilities, including FTP clients. Its credential-access functionality targets authentication information stored by these applications.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
FIN6 has used the Stealer One credential stealer to target e-mail and file transfer utilities including FTP.
2 distinct techniques documented for this family, organized by ATT&CK tactic.
Agent Tesla can gather credentials from a number of browsers... APT33 has used a variety of publicly available tools like LaZagne to gather credentials... TrickBot can obtain passwords stored in files from web browsers such as Chrome, Firefox, Internet Explorer, and Microsoft Edge... SELECT action_url, username_value, password_value FROM logins; CryptUnprotectData
Agent Tesla can gather credentials from a number of browsers... APT3 has used tools to dump passwords from browsers... APT41 used BrowserGhost, a tool designed to obtain credentials from browsers, to retrieve information from password stores... TrickBot can obtain passwords stored in files from web browsers such as Chrome, Firefox, Internet Explorer, and Microsoft Edge
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Credential stealer used by FIN6 against email and file-transfer utilities, including FTP clients.
Credential stealer used to target browser-stored credentials.
Steals credentials from email and file-transfer utilities, including FTP clients.
Credential stealer used to target email and file transfer utilities including FTP.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.