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AvosLocker Ransomware

Mar 18, 2022 1:31:01 PM / by PolySwarm Tech Team posted in Threat Bulletin, Windows, AvosLocker, Linux

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Background

Qualys recently published a blog post on AvosLocker ransomware, which targets both Windows and Linux operating systems.

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Muddy Water Uses SloughRAT in Recent Campaigns

Mar 17, 2022 1:21:56 PM / by PolySwarm Tech Team posted in Threat Bulletin, Espionage, Iran, Muddy Water, Static Kitten, SloughRAT, Canopy

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Background

Iranian threat actor group Muddy Water has been very active in the last few months. In February, CISA issued an
alert warning that the group was conducting a campaign targeting global government and commercial networks. Earlier this month, Cisco’s Talos Intelligence published a blog post on Muddy Water activity targeting Turkey and other countries.

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RedLine Stealer Delivered Via Fake Windows 11 Update

Mar 14, 2022 1:27:00 PM / by PolySwarm Tech Team posted in Threat Bulletin, Malware, RedLine Stealer, Microsoft, Windows, Infostealer

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Background

Last month HP published research on RedLine Stealer, a stealer malware being delivered via fake Windows 11 updates. Almost a month later, RedLine Stealer continues to be active in the wild, with new samples surfacing over the past week.

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MicroBackdoor

Mar 11, 2022 1:28:25 PM / by PolySwarm Tech Team posted in Ukraine, Threat Bulletin, MicroBackdoor, UNC1151, Belarus, First Seen

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Background

CERT-UA, the Ukraine government’s incident response team, recently released a report on MicroBackdoor. CERT-UA did not provide further information on the scope of the incident leading to the discovery of this malware.

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Jester Stealer

Mar 10, 2022 1:10:05 PM / by PolySwarm Tech Team posted in Threat Bulletin, Jester Stealer, Stealer

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Background

Cyble recently published research on Jester Stealer, an info stealer known to harvest login credentials, cookies, payment card details, and other information.

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HermeticWiper & IsaacWiper Target Ukraine

Mar 9, 2022 1:34:55 PM / by PolySwarm Tech Team posted in Ukraine, Threat Bulletin, IsaacWiper, HermeticWiper, WhisperGate, HermeticWizard, HermeticRansom, FoxBlade

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Background

Ukraine was recently targeted by several wiper malware families. In January,
WhisperGate, which was attributed to a Belarusian threat actor group known as Ghostwriter/UNC1151, targeted Ukraine’s government, non-profit, and technology verticals. On February 23, another wiper malware dubbed HermeticWiper or FoxBlade was used to target Ukraine. On February 24, a third wiper malware was observed targeting Ukrainian entities. This new malware was dubbed IsaacWiper. ESET recently published research on HermeticWiper and IsaacWiper.

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Daxin Backdoor

Mar 4, 2022 2:06:59 PM / by PolySwarm Tech Team posted in Threat Bulletin, Espionage, China, Owlproxy, Daxin

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Background


Symantec recently published research on Daxin backdoor, which they called the “most advanced” malware they have seen from Chinese threat actors.

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Sugar Ransomware Targets Individuals Instead of Enterprises

Mar 3, 2022 2:59:22 PM / by PolySwarm Tech Team posted in Threat Bulletin, Ransomware, RaaS, Sugar

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Background

Walmart recently reported on a new ransomware as a service (RaaS) called Sugar ransomware. The threat actors behind Sugar ransomware appear to be targeting individuals rather than enterprises and demand a low ransom amount, based on the number of files encrypted.

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