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Cloudflare Breach: Nation-State Hackers Access Source Code and Internal Docs

By Newsroom
Cloudflare has revealed that it was the target of a likely nation-state attack in which the threat actor leveraged stolen credentials to gain unauthorized access to its Atlassian server and ultimately access some documentation and a limited amount of source code. The intrusion, which took place between November 14 and 24, 2023, and detected on November 23, was carried out "with the goal of

Iran-Linked Imperial Kitten Cyber Group Targeting Middle East's Tech Sectors

By Newsroom
A group with links to Iran targeted transportation, logistics, and technology sectors in the Middle East, including Israel, in October 2023 amid a surge in Iranian cyber activity since the onset of the Israel-Hamas war. The attacks have been attributed by CrowdStrike to a threat actor it tracks under the name Imperial Kitten, and which is also known as Crimson Sandstorm (previously Curium),

Cyber Group 'Gold Melody' Selling Compromised Access to Ransomware Attackers

By THN
A financially motivated threat actor has been outed as an initial access broker (IAB) that sells access to compromised organizations for other adversaries to conduct follow-on attacks such as ransomware. SecureWorks Counter Threat Unit (CTU) has dubbed the e-crime group Gold Melody, which is also known by the names Prophet Spider (CrowdStrike) and UNC961 (Mandiant). "This financially motivated

Chinese Hackers Using Never-Before-Seen Tactics for Critical Infrastructure Attacks

By Ravie Lakshmanan
The newly discovered Chinese nation-state actor known as Volt Typhoon has been observed to be active in the wild since at least mid-2020, with the hacking crew linked to never-before-seen tradecraft to retain remote access to targets of interest. The findings come from CrowdStrike, which is tracking the adversary under the name Vanguard Panda. "The adversary consistently employed ManageEngine

Hackers Using Self-Extracting Archives Exploit for Stealthy Backdoor Attacks

By Ravie Lakshmanan
An unknown threat actor used a malicious self-extracting archive (SFX) file in an attempt to establish persistent backdoor access to a victim's environment, new findings from CrowdStrike show. SFX files are capable of extracting the data contained within them without the need for dedicated software to display the file contents. It achieves this by including a decompressor stub, a piece of code

U.S., U.K. Sanction 7 Men Tied to Trickbot Hacking Group

By BrianKrebs

Authorities in the United States and United Kingdom today levied financial sanctions against seven men accused of operating “Trickbot,” a cybercrime-as-a-service platform based in Russia that has enabled countless ransomware attacks and bank account takeovers since its debut in 2016. The U.S. Department of the Treasury says the Trickbot group is associated with Russian intelligence services, and that this alliance led to the targeting of many U.S. companies and government entities.

Initially a stealthy trojan horse program delivered via email and used to steal passwords, Trickbot evolved into “a highly modular malware suite that provides the Trickbot Group with the ability to conduct a variety of illegal cyber activities, including ransomware attacks,” the Treasury Department said.

A spam email from 2020 containing a Trickbot-infected attachment. Image: Microsoft.

“During the height of the COVID-19 pandemic in 2020, Trickbot targeted hospitals and healthcare centers, launching a wave of ransomware attacks against hospitals across the United States,” the sanctions notice continued. “In one of these attacks, the Trickbot Group deployed ransomware against three Minnesota medical facilities, disrupting their computer networks and telephones, and causing a diversion of ambulances. Members of the Trickbot Group publicly gloated over the ease of targeting the medical facilities and the speed with which the ransoms were paid to the group.”

Only one of the men sanctioned today is known to have been criminally charged in connection with hacking activity. According to the Treasury Department, the alleged senior leader of the Trickbot group is 34-year-old Russian national Vitaly “Bentley” Kovalev.

A New Jersey grand jury indicted Kovalev in 2012 after an investigation by the U.S. Secret Service determined that he ran a massive “money mule” scheme, which used phony job offers to trick people into laundering money stolen from hacked small to mid-sized businesses in the United States. The 2012 indictment against Kovalev relates to cybercrimes he allegedly perpetrated prior to the creation of Trickbot.

BOTNET, THE MOVIE

In 2015, Kovalev reportedly began filming a movie in Russia about cybercrime called “Botnet.” According to a 2016 story from Forbes.ru, Botnet’s opening scene was to depict the plight of Christina Svechinskaya, a Russian student arrested by FBI agents in September 2010.

Christina Svechinskaya, a money mule hired by Bentley who was arrested by the FBI in 2010.

Svechinskaya was one of Bentley’s money mules, most of whom were young Russian students on temporary travel visas in the United States. She was among 37 alleged mules charged with aiding an international cybercrime operation — basically, setting up phony corporate bank accounts for the sole purpose of laundering stolen funds.

Although she possessed no real hacking skills, Svechinskaya’s mugshot and social media photos went viral online and she was quickly dubbed “the world’s sexiest computer hacker” by the tabloids.

Kovalev’s Botnet film project was disrupted after Russian authorities raided the film production company’s offices as part of a cybercrime investigation. In February 2016, Reuters reported that the raid was connected to a crackdown on “Dyre,” a sophisticated trojan that U.S. federal investigators say was the precursor to the Trickbot malware. The Forbes.ru article cited sources close to the investigation who said the film studio was operating as a money-laundering front for the cybercrooks behind Dyre.

TREASON

But shifting political winds in Russia would soon bring high treason charges against three of the Russian cybercrime investigators tied to the investigation into the film studio. In a major shakeup in 2017, the Kremlin levied treason charges against Sergey Mikhaylov, then deputy chief of Russia’s top anti-cybercrime unit.

Also charged with treason was Ruslan Stoyanov, then a senior employee at Russian security firm Kaspersky Lab [the Forbes.ru report from 2016 said investigators from Mikhaylov’s unit and Kaspersky Lab were present at the film company raid].

Russian media outlets have speculated that the men were accused of treason for helping American cybercrime investigators pursue top Russian hackers. However, the charges against both men were classified and have never been officially revealed. After their brief, closed trial, both men were convicted of treason. Mikhaylov was given a 22 year prison sentence; Stoyanov was sentenced to 14 years in prison.

In September 2021, the Kremlin issued treason charges against Ilya Sachkov, formerly head of the cybersecurity firm Group-IB. According to Reuters, Sachkov and his company were hired by the film studio “to advise the Botnet director and writers on the finer points of cybercrime.” Sachkov remains imprisoned in Russia pending his treason trial.

A WELL-OILED CYBERCRIME MACHINE

Trickbot was heavily used by Conti and Ryuk, two of Russia’s most ruthless and successful ransomware groups. Blockchain analysis firm Chainalysis estimates that in 2021 alone, Conti extorted more than USD $100 million from its hacking victims; Chainalysis estimates Ryuk extorted more than USD $150 million from its ransomware victims.

The U.S. cybersecurity firm CrowdStrike has long tracked the activities of Trickbot, Ryuk and Conti under the same moniker — “Wizard Spider” — which CrowdStrike describes as “a Russia-nexus cybercriminal group behind the core development and distribution of a sophisticated arsenal of criminal tools, that allow them to run multiple different types of operations.”

“CrowdStrike Intelligence has observed WIZARD SPIDER targeting multiple countries and industries such as academia, energy, financial services, government, and more,” said Adam Meyers, head of intelligence at CrowdStrike.

This is not the U.S. government’s first swipe at the Trickbot group. In early October 2020, KrebsOnSecurity broke the news that someone had launched a series of coordinated attacks designed to disrupt the Trickbot botnet. A week later, The Washington Post ran a story saying the attack on Trickbot was the work of U.S. Cyber Command, a branch of the Department of Defense headed by the director of the U.S. National Security Agency (NSA).

Days after Russia invaded Ukraine in February 2022, a Ukrainian researcher leaked several years of internal chat logs from the Conti ransomware gang. Those candid conversations offer a fascinating view into the challenges of running a sprawling criminal enterprise with more than 100 salaried employees. They also showed that Conti enjoyed protection from prosecution by Russian authorities, as long as the hacker group took care not to target Russian organizations.

In addition, the leaked Conti chats confirmed there was considerable overlap in the operation and leadership of Conti, Trickbot and Ryuk.

Michael DeBolt, chief intelligence officer at cybersecurity firm Intel 471, said the leaked Conti chats showed Bentley oversaw a team of coders tasked with ensuring that the Trickbot and Conti malware remained undetected by the different antivirus and security software vendors.

In the years prior to the emergence of Trickbot in 2016, Bentley worked closely on the Gameover ZeuS trojan, a peer-to-peer malware threat that infected between 500,000 and a million computers with an automated ransomware strain called Cryptolocker, DeBolt said.

The FBI has a standing $3 million bounty offered for the capture of Evgeny “Slavik” Bogachev, the alleged author of the Zeus trojan. And there are indications that Bentley worked directly with Bogachev. DeBolt pointed to an October 2014 discussion on the exclusive Russian hacking forum Mazafaka that included a complaint by a Russian hosting firm against a forum user by the name “Ferrari” who had failed to pay a $30,000 hosting bill.

In that discussion thread, it emerged that the hosting company thought it was filing a complaint against Slavik. But the Mazafaka member who vouched for Ferrari’s membership on the forum said they knew Ferrari as Bentley the mule handler, and at some point Slavik and Bentley must have been sharing the Ferrari user account.

“It is likely that Slavik (aka. Bogachev) and Bentley (aka. Kovalev) shared the same ‘Ferrari’ handle on the Mazafaka forum circa 2014, which suggests the two had a working relationship at that time, and supports the recent US and UK Government announcements regarding Kovalev’s past involvement in cybercrime predating Dyre or the Trickbot Group,” DeBolt said.

CrowdStrike’s Meyers said while Wizard Spider operations have significantly reduced following the demise of Conti in June 2022, today’s sanctions will likely cause temporary disruptions for the cybercriminal group while they look for ways to circumvent the financial restrictions — which make it illegal to transact with or hold the assets of sanctioned persons or entities.

“Often, when cybercriminal groups are disrupted, they will go dark for a time only to rebrand under a new name,” Meyers said.

The prosecution of Kovalev is being handled by the U.S. Attorney’s Office in New Jersey. A copy of the now-unsealed 2012 indictment of Kovalev is here (PDF).

GuLoader Malware Utilizing New Techniques to Evade Security Software

By Ravie Lakshmanan
Cybersecurity researchers have exposed a wide variety of techniques adopted by an advanced malware downloader called GuLoader to evade security software. "New shellcode anti-analysis technique attempts to thwart researchers and hostile environments by scanning entire process memory for any virtual machine (VM)-related strings," CrowdStrike researchers Sarang Sonawane and Donato Onofri said in a

Ransomware Hackers Using New Way to Bypass MS Exchange ProxyNotShell Mitigations

By Ravie Lakshmanan
Threat actors affiliated with a ransomware strain known as Play are leveraging a never-before-seen exploit chain that bypasses blocking rules for ProxyNotShell flaws in Microsoft Exchange Server to achieve remote code execution (RCE) through Outlook Web Access (OWA). "The new exploit method bypasses URL rewrite mitigations for the Autodiscover endpoint," CrowdStrike researchers Brian Pitchford,

Telcom and BPO Companies Under Attack by SIM Swapping Hackers

By Ravie Lakshmanan
A persistent intrusion campaign has set its eyes on telecommunications and business process outsourcing (BPO) companies at lease since June 2022. "The end objective of this campaign appears to be to gain access to mobile carrier networks and, as evidenced in two investigations, perform SIM swapping activity," CrowdStrike researcher Tim Parisi said in an analysis published last week. The

Comm100 Chat Provider Hijacked to Spread Malware in Supply Chain Attack

By Ravie Lakshmanan
A threat actor likely with associations to China has been attributed to a new supply chain attack that involves the use of a trojanized installer for the Comm100 Live Chat application to distribute a JavaScript backdoor. Cybersecurity firm CrowdStrike said the attack made use of a signed Comm100 desktop agent app for Windows that was downloadable from the company's website. The scale of the

North Korean Hackers Weaponizing Open-Source Software in Latest Cyber Attacks

By Ravie Lakshmanan
A "highly operational, destructive, and sophisticated nation-state activity group" with ties to North Korea has been weaponizing open source software in their social engineering campaigns aimed at companies around the world since June 2022. Microsoft's threat intelligence teams, alongside LinkedIn Threat Prevention and Defense, attributed the intrusions with high confidence to Zinc, a threat
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