Background
Qualys recently published a blog post on AvosLocker ransomware, which targets both Windows and Linux operating systems.
Recent Posts
AvosLocker Ransomware
Mar 18, 2022 1:31:01 PM / by PolySwarm Tech Team posted in Threat Bulletin, Windows, AvosLocker, Linux
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
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.
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
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.
MicroBackdoor
Mar 11, 2022 1:28:25 PM / by PolySwarm Tech Team posted in Ukraine, Threat Bulletin, MicroBackdoor, UNC1151, Belarus, First Seen
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.
Jester Stealer
Mar 10, 2022 1:10:05 PM / by PolySwarm Tech Team posted in Threat Bulletin, Jester Stealer, Stealer
Background
Cyble recently published research on Jester Stealer, an info stealer known to harvest login credentials, cookies, payment card details, and other information.
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
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.
Daxin Backdoor
Mar 4, 2022 2:06:59 PM / by PolySwarm Tech Team posted in Threat Bulletin, Espionage, China, Owlproxy, Daxin
Background
Symantec recently published research on Daxin backdoor, which they called the “most advanced” malware they have seen from Chinese threat actors.
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
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.