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KLogEXE is a keylogging malware variant associated with the North Korea-aligned Kimsuky threat actor, also tracked as Sparkling Pisces. It has been reported alongside another Kimsuky malware family, FPSpy, and is used to capture keystrokes from compromised systems for espionage purposes. Reporting also describes a Python-based tool named klog.exe used by PoetRAT for keylogging, indicating the malware’s role as a dedicated keystroke collection component within broader intrusion activity. Its primary function is to monitor user input and harvest sensitive information entered on infected hosts, supporting credential collection and post-compromise surveillance. High-confidence reporting supports its use in targeted espionage operations rather than indiscriminate criminal deployment. The available information directly supports Windows-focused keylogging behavior, but does not provide sufficient high-confidence detail on additional capabilities, persistence mechanisms, or delivery vectors.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
2 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
PoetRAT has used a Python tool named klog.exe for keylogging.
...Kimsuky (Sparkling Pisces) deployed two new malware variants, KLogEXE and FPSpy. | “…Kimsuky (Sparkling Pisces) deployed two new malware variants, KLogEXE and FPSpy.”
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Python-based keylogging tool used by PoetRAT.
New malware variant attributed here to Kimsuky (Sparkling Pisces).
New malware variant attributed in the content to Kimsuky/Sparkling Pisces activity.
Keylogging tool used alongside PoetRAT.
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.