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gamshen
About this tag
Gamshen is a malicious IIS native module used in the GhostRedirector campaign, a sophisticated SEO fraud operation targeting Windows servers. Discovered by ESET Research, GhostRedirector compromised at least 65 Internet-facing Windows IIS servers between December 2024 and April 2025. The campaign deploys two custom components: a C++ backdoor named Rungan and the Gamshen IIS module. Gamshen performs server-side SEO fraud by serving altered content only to search-engine crawlers, boosting third-party gambling sites while leaving normal visitors unaffected. This module works alongside the Rungan backdoor to provide long-term persistence and stealthy search-engine manipulation. The tag gamshen covers discussions about this specific IIS module, its role in the GhostRedirector campaign, and its technical details as reported by ESET.
ESET researchers have uncovered a compact but sophisticated campaign — tracked as GhostRedirector — that has secretly turned at least 65 Internet‑facing Windows servers into a stealthy SEO‑fraud network while simultaneously installing a resilient native backdoor for long‑term access. Background...
A compact but sophisticated campaign tracked as GhostRedirector has infected at least 65 Internet‑facing Windows IIS servers and paired a stealthy native backdoor with an in‑process IIS module to run a covert, profitable SEO fraud operation that pushes third‑party gambling sites while leaving...
ESET’s researchers have uncovered a previously undocumented threat cluster that covertly poisons legitimate IIS-hosted websites to manipulate Google rankings while also planting a stealthy C++ backdoor on Windows servers — a campaign ESET calls GhostRedirector that, according to an internet-wide...
ESET researchers have uncovered a compact but sophisticated campaign — tracked as GhostRedirector — that has compromised at least 65 Internet‑facing Windows servers and combined a native C++ backdoor with a malicious IIS native module to deliver long‑lived persistence and server‑side SEO fraud...
ESET Research revealed that a previously undocumented threat actor, which the company calls GhostRedirector, compromised at least 65 Internet‑facing Windows IIS hosts and deployed two custom native components — a C++ backdoor named Rungan and a malicious IIS module called Gamshen — to run a...
ESET Research has uncovered a previously undocumented threat actor it calls GhostRedirector, which in June 2025 was found to have compromised at least 65 Windows servers across multiple countries and deployed two custom tools — a C++ backdoor named Rungan and a native IIS module named Gamshen...