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FickerStealer is a Rust-based information-stealing malware family targeting Windows systems and offered as malware-as-a-service. It emerged on Russian-language underground forums in October 2020. Its capabilities include stealing passwords, browser autocomplete data, and cryptocurrency wallets, exposing victims to account compromise and cryptocurrency theft.
FickerStealer has been distributed through the Rig exploit kit. In an observed campaign, websites using misspelled names of popular instant-messaging services redirected visitors to exploit-kit landing pages that targeted vulnerable browsers and plugins. Successful exploitation initiated a PowerShell and JScript download chain that delivered the malware. FickerStealer has also been delivered by HANCITOR, a loader distributed through malicious spam and macro-enabled Word documents. It was additionally identified among information-stealing payloads distributed through the multistage infrastructure associated with the Netbounce threat cluster. These distribution relationships distinguish FickerStealer from the loaders and other malware families used alongside it.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
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.
6 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.
Mentioned as another information stealer; no family-specific capabilities or connection to SHurk Steal are described.
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.