PseudoManuscrypt

Internal ID: win.pseudo_manuscrypt

aliases

Last seen:Mar 17, 2026

Intelligence Profile

According to PCrisk, PseudoManuscrypt is the name of the malware that spies on victims. It is similar to another malware called Manuscrypt. We have discovered PseudoManuscrypt while checking installers for pirated software (one of the examples is a fake pirated installer for SolarWinds - a network monitoring software).

Threat Analysis

PseudoManuscrypt is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.

External References

→https://asec.ahnlab.com/en/31683/

→https://ics-cert.kaspersky.com/reports/2021/12/16/pseudomanuscrypt-a-mass-scale-spyware-attack-campaign/

→https://medium.com/@lcam/updates-from-the-maas-new-threats-delivered-through-nullmixer-d45defc260d1

→https://securelist.com/nullmixer-oodles-of-trojans-in-a-single-dropper/107498/

→https://www.bitsight.com/blog/zero-50k-infections-pseudomanuscrypt-sinkholing-part-1

→https://www.netresec.com/?page=Blog&month=2025-09&post=Gh0stKCP-Protocol

→https://www.youtube.com/watch?v=uakw2HMGZ-I

Quick Facts

TypeMalware Family

Aliases1

Also Known As

win.pseudo_manuscrypt

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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