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FickerStealer is a Rust-based malware-as-a-service infostealer that emerged in 2020 and is traded in Russian-language cybercrime ecosystems. It is designed to harvest sensitive data from infected Windows systems, including saved passwords, browser autocomplete data, and cryptocurrency wallet information. FickerStealer has been observed as a final-stage payload in multistage crimeware operations and is commonly delivered by other malware or exploit-driven infection chains rather than acting as a standalone initial access tool.
Observed delivery chains include Hancitor infections distributed through malicious spam and macro-enabled Microsoft Office documents, where the loader retrieves additional payloads such as FickerStealer after execution on the victim host. It has also been delivered through web-based exploitation, including Rig exploit kit activity that redirected victims from lure websites to exploit landing pages targeting vulnerable browsers and plugins before downloading the stealer. Separate multistage infrastructure associated with the Netbounce cluster has also delivered FickerStealer alongside other stealers such as Vidar.
FickerStealer primarily serves credential and financial-data theft objectives in cybercrime campaigns. Its use as a MaaS offering and its appearance across multiple unrelated delivery ecosystems indicate that it is an opportunistic commodity payload favored for post-compromise monetization on Windows endpoints.
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16 distinct techniques documented for this family, organized by ATT&CK tactic.
The documents contained Excel 4 macros that download and run remotely-hosted BAT scripts using PowerShell’s Net.WebClient.DownloadFile method.
The documents contained Excel 4 macros that download and run remotely-hosted BAT scripts using PowerShell’s Net.WebClient.DownloadFile method.
Following exploitation, a PowerShell script writes an obfuscated JScript file to the user’s %Temp% directory, which downloads the final malware payload using a WinHttpRequest object.
It's packed with a multistage packer. Following unpacking, we discovered different stealers being delivered from this infrastructure, such as Vidar and FickerStealer.
71 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
IPs, domains, and DNS infrastructure linked to this family.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
Other indicator types observed in public reporting.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced only as another malware family in passing; no substantive analysis provided in this content.
Rust-based stealer/MaaS mentioned only as background context for Rust malware development.
A secondary payload downloaded by Hancitor onto victim machines.
An information stealer delivered as a final payload through the NetBounce infrastructure. The report notes its first action is creating the file “Trackingfolder084\start.txt,” suggesting a close relationship with the NetBounce delivery ecosystem.
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.