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Trojan.Encoder.41868 is an encoder trojan/ransomware family identified by Doctor Web as one of the more commonly encountered file-encrypting threats affecting users in late 2025 through Q2 2026. It was repeatedly listed among the top encoder trojans seen in user decryption requests, including Q4 2025, Q1 2026, and Q2 2026. In Q4 2025, Doctor Web reported it accounted for 4.21% of user decryption requests, behind Trojan.Encoder.35534. The provided content also states that artifacts indicate the hacker group C77L was involved in its creation. Beyond its classification as an encoder trojan that affects users’ files, the content does not provide further high-confidence technical details on encryption behavior, infection vector, targeted sectors, platforms, or specific indicators of compromise.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A file-encrypting encoder trojan/ransomware variant that was among the most common causes of decryption requests in Q2 2026.
File-encrypting trojan (encoder) listed among the primary ransomware threats seen in Q1 2026.
Ransomware/encoder family whose artifacts suggest involvement by the C77L hacker group.
Ransomware that encrypts files and demands payment for decryption.
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.