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Security Affairs newsletter Round 438 by Pierluigi Paganini – International
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National Student Clearinghouse data breach impacted approximately 900 US schools

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Government of Bermuda blames Russian threat actors for the cyber attack

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Recently patched Apple and Chrome zero-days exploited to infect devices in Egypt
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CISA adds Trend Micro Apex One and Worry-Free Business Security flaw to its
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Information of Air Canada employees exposed in recent cyberattack

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Sandman APT targets telcos with LuaDream backdoor

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Apple rolled out emergency updates to address 3 new actively exploited zero-day
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Ukrainian hackers are behind the Free Download Manager supply chain attack

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Space and defense tech maker Exail Technologies exposes database access

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Pro-Russia hacker group NoName launched a DDoS attack on Canadian airports
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Experts found critical flaws in Nagios XI network monitoring software

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The dark web drug marketplace PIILOPUOTI was dismantled by Finnish Customs

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International Criminal Court hit with a cyber attack

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GitLab addressed critical vulnerability CVE-2023-5009

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Trend Micro addresses actively exploited zero-day in Apex One and other security
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ShroudedSnooper threat actors target telecom companies in the Middle East

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Recent cyber attack is causing Clorox products shortage

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Earth Lusca expands its arsenal with SprySOCKS Linux malware

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Microsoft AI research division accidentally exposed 38TB of sensitive data

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German intelligence warns cyberattacks could target liquefied natural gas (LNG)
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North Korea's Lazarus APT stole almost $240 million in crypto assets since June

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Clop gang stolen data from major North Carolina hospitals

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CardX released a data leak notification impacting their customers in Thailand

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edition

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TikTok fined €345M by Irish DPC for violating children’s privacy

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Dariy Pankov, the NLBrute malware author, pleads guilty

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Dangerous permissions detected in top Android health apps

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Caesars Entertainment paid a ransom to avoid stolen data leaks

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Free Download Manager backdoored to serve Linux malware for more than 3 years

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Lockbit ransomware gang hit the Carthage Area Hospital and the Clayton-Hepburn
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The iPhone of a Russian journalist was infected with the Pegasus spyware

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Kubernetes flaws could lead to remote code execution on Windows endpoints

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Threat actor leaks sensitive data belonging to Airbus

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A new ransomware family called 3AM appears in the threat landscape

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Redfly group infiltrated an Asian national grid as long as six months

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Mozilla fixed a critical zero-day in Firefox and Thunderbird

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Microsoft September 2023 Patch Tuesday fixed 2 actively exploited zero-day flaws

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Save the Children confirms it was hit by cyber attack

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Adobe fixed actively exploited zero-day in Acrobat and Reader

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A new Repojacking attack exposed over 4,000 GitHub repositories to hack

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MGM Resorts hit by a cyber attack

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Anonymous Sudan launched a DDoS attack against Telegram

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Iranian Charming Kitten APT targets various entities in Brazil, Israel, and the
U.A.E. using a new backdoor

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CISA adds recently discovered Apple zero-days to Known Exploited Vulnerabilities
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UK and US sanctioned 11 members of the Russia-based TrickBot gang

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New HijackLoader malware is rapidly growing in popularity in the cybercrime
community

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Some of TOP universities wouldn’t pass cybersecurity exam: left websites
vulnerable

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Evil Telegram campaign: Trojanized Telegram apps found on Google Play

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Rhysida Ransomware gang claims to have hacked three more US hospitals

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Akamai prevented the largest DDoS attack on a US financial company

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Security Affairs newsletter Round 436 by Pierluigi Paganini – International
edition

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US CISA added critical Apache RocketMQ flaw to its Known Exploited
Vulnerabilities catalog

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Ragnar Locker gang leaks data stolen from the Israel's Mayanei Hayeshua hospital

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North Korea-linked threat actors target cybersecurity experts with a zero-day

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Zero-day in Cisco ASA and FTD is actively exploited in ransomware attacks

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Zero-days fixed by Apple were used to deliver NSO Group’s Pegasus spyware

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Apple discloses 2 new actively exploited zero-day flaws in iPhones, Macs

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A malvertising campaign is delivering a new version of the macOS Atomic Stealer

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Two flaws in Apache SuperSet allow to remotely hack servers

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Chinese cyberspies obtained Microsoft signing key from Windows crash dump due to
a mistake

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Google addressed an actively exploited zero-day in Android

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A zero-day in Atlas VPN Linux Client leaks users' IP address

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MITRE and CISA release Caldera for OT attack emulation

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ASUS routers are affected by three critical remote code execution flaws

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Hackers stole $41M worth of crypto assets from crypto gambling firm Stake

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Freecycle data breach impacted 7 Million users

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 * Hamas-linked APT uses Rust-based SysJoker backdoor against Israel


HAMAS-LINKED APT USES RUST-BASED SYSJOKER BACKDOOR AGAINST ISRAEL

Pierluigi Paganini November 25, 2023


RESEARCHERS REPORTED THAT A HAMAS-LINKED APT GROUP IS USING A RUST-BASED
SYSJOKER BACKDOOR AGAINST ISRAELI ENTITIES.

Check Point researchers observed a Hamas-linked APT group is using the SysJoker
backdoor against Israeli entities.

In December 2021, security experts from Intezer first discovered the SysJoker
backdoor, which is able to infect Windows, macOS, and Linux systems.

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The version employed in the attacks against Israel is written in Rust language,
which suggests the malware was rewritten from scratch. The experts noticed that
the malicious code supports the same functionalities as past variants. The
threat actor switched from Google Drive to OneDrive to store dynamic C2 (command
and control server) URLs.

“Using OneDrive allows the attackers to easily change the C2 address, which
enables them to stay ahead of different reputation-based services. This behavior
remains consistent across different versions of SysJoker.” reads the analysis
published by Check Point.

The backdoor collects information about the infected system (i.e. Windows
version, username, MAC address). The collected data is sent to
the /api/attach API endpoint on the C2 server.

Once registered with the C2 server, the sample initiates the main C2 loop. It
sends a POST request with the unique token to the /api/req endpoint, receiving a
JSON response from the C2 server.

In turn, the server responds with a JSON containing a field named “data,” which
holds an array of actions for the sample to execute.

Check Point also noticed behavioral similarities with the Operation Electric
Powder campaign which targeted Israel in 2016-2017. This campaign was attributed
to Gaza Cybergang (aka Molerats), a threat actor that is believed to be linked
to the Palestinian organization Hamas.

The Gaza cybergang, aka “Gaza Hackers Team” and “Molerats,” appears to be
politically motivated and has been active since at least since 2012, but it has
intensified its activity in Q2 2015.

Check Point also discovered two previously undetected additional SysJoker
samples that are more complex than the Rust version.

“Although the SysJoker malware, which was first seen in 2021 and publicly
described in 2022, wasn’t attributed to any known actor, we found evidence that
this tool and its newer variants have been used as part of the Israeli-Hamas
conflict. We were also able to make a connection between SysJoker and the
2016-2017 Electric Powder Operation against Israel Electric Company.” concludes
the report. “The earlier versions of the malware were coded in C++. Since there
is no straightforward method to port that code to Rust, it suggests that the
malware underwent a complete rewrite and may potentially serve as a foundation
for future changes and improvements.”

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, SysJoker backdoor)

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