The menace actor referred to as Sticky Werewolf has been linked to focused assaults primarily in Russia and Belarus with the intention of delivering the Lumma Stealer malware by way of a beforehand undocumented implant.
Cybersecurity firm Kaspersky is monitoring the exercise beneath the title Indignant Likho, which it stated bears a “sturdy resemblance” to Awaken Likho (aka Core Werewolf, GamaCopy, and PseudoGamaredon).
“Nonetheless, Indignant Likho’s assaults are typically focused, with a extra compact infrastructure, a restricted vary of implants, and a give attention to staff of huge organizations, together with authorities businesses and their contractors,” the Russian firm said.
It is suspected that the menace actors are probably native Russian audio system given the usage of fluent Russian within the bait recordsdata used to set off the an infection chain. Final month, cybersecurity firm F6 (previously F.A.C.C.T.) described it as a “pro-Ukrainian cyberspy group.”
The attackers have been discovered to primarily single out organizations in Russia and Belarus, with a whole lot of victims recognized within the former.
Previous intrusion activities related to the group have leveraged phishing emails as a conduit to distribute varied malware households corresponding to NetWire, Rhadamanthys, Ozone RAT, and a backdoor referred to as DarkTrack, the final of which is launched through a loader known as Ande Loader.
The assault sequence includes the usage of spear-phishing emails bearing a booby-trapped attachment (e.g., archive recordsdata), inside that are two Home windows shortcut (LNK) recordsdata and a professional lure doc.
The archive recordsdata are accountable for advancing the malicious exercise to the next-stage, unleashing a fancy multi-stage course of to deploy the Lumma data stealer.
“This implant was created utilizing the professional open-source installer, Nullsoft Scriptable Set up System, and capabilities as a self-extracting archive (SFX),” Kaspersky stated.
The assaults have been noticed incorporating steps to evade detection by safety distributors by way of a verify for emulators and sandboxed environments, inflicting the malware to both terminate or resume after a ten,000 ms delay, a way additionally noticed in Awaken Likho implants.
This overlap has raised the likelihood that the attackers behind the 2 campaigns share the identical expertise or probably the identical group utilizing a special set of instruments for various targets and duties.
Lumma Stealer is designed to collect system and put in software program data from compromised units, in addition to delicate knowledge corresponding to cookies, usernames, passwords, banking card numbers, and connection logs. It is also able to stealing knowledge from varied internet browsers, cryptocurrency wallets, cryptowallet browser extensions (MetaMask), authenticators, and from apps AnyDesk and KeePass.
“The group’s newest assaults use the Lumma stealer, which collects an unlimited quantity of knowledge from contaminated units, together with browser-stored banking particulars and cryptowallet recordsdata,” Kaspersky stated.
“The group depends on available malicious utilities obtained from darknet boards, reasonably than growing its personal instruments. The one work they do themselves is writing mechanisms of malware supply to the sufferer’s gadget and crafting focused phishing emails.”
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