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Threat Group Cards: A Threat Actor Encyclopedia

Permanent link Tool: SkinnyBoy

NamesSkinnyBoy
CategoryMalware
TypeBackdoor, Info stealer
Description(Cluster25) The vector of the infection is a spear phishing email delivering a Word Office document with a significant name related to an International Conference. Both the vector and its naming are consistent with APT28 / FancyBear TTPs.As expected, the document triggers a MACRO function able to extract a Microsoft Dynamic Link Library (DLL) which then acts as downloader of a SkinnyBoy dropper (tdp1.exe) from a first dropurl.
Information<https://cluster25.io/wp-content/uploads/2021/05/2021-05_FancyBear.pdf>

Last change to this tool card: 14 June 2021

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All groups using tool SkinnyBoy

ChangedNameCountryObserved

APT groups

 Sofacy, APT 28, Fancy Bear, SednitRussia2004-Jun 2021 HOTX

1 group listed (1 APT, 0 other, 0 unknown)

Thailand Computer Emergency Response Team (ThaiCERT)
Electronic Transactions Development Agency

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