Key TakeawaysProofpoint has observed recent espionage-related activity by TA473, including yet to be reported instances of TA473 targeting US elected officials and staffers. TA473 is a newly minted Proofpoint threat actor that aligns with public reporting on Winter Vivern.
TA473 since at least February 2023 has continuously leveraged an unpatched Zimbra vulnerability in publicly facing webmail portals that allows them to gain access to the email mailboxes of government entities in Europe.…
Read More Tag: XSS
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Read More In January 2023, through our Dark Web monitoring routine, Sekoia.io identified a new information stealer advertised as Stealc by its alleged developer, going by the handle Plymouth. The threat actor presents Stealc as a fully featured and ready-to-use stealer, whose development relied on Vidar, Raccoon, Mars and Redline stealers.…
Written by Jon DiMaggio.
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I gotta story to tell…
The LockBit ransomware gang is one of the most notorious organized cybercrime syndicates that exists today. The gang is behind attacks targeting private-sector corporations and other high-profile industries worldwide. News and media outlets have documented many LockBit attacks, while security vendors offer technical assessments explaining how each occurred.…
After Microsoft announced this year that macros from the Internet will be blocked by default in Office, many threat actors have switched to different file types such as Windows Shortcut (LNK), ISO or ZIP files, to distribute their malware. Nevertheless, Office documents are still actively leveraged in many campaigns and pose a large risk to organizations, especially with threat actors continuously finding new ways to avoid detection.…
Published On : 2022-09-25
Erbium Stealer Malware Report Executive SummaryThe Erbium malware is an information-stealer/ info stealer, which is distributed as Malware-as- a-Service (MaaS). CYFIRMA research team observed this malware binary in Aug-2022 while carrying out threat hunting activities. The team has also observed the stealer malware being advertised on Russian-speaking hacker forums.…
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Read More In July 2022, Sekoia.io discovered a new Golang botnet advertised by its alleged developer as Aurora botnet since April 2022. Since we published an analysis of the malware and the profile of the threat actor advertising Aurora on underground forums for our clients, the botnet’s activity slowed down.…
The parasitic Water Labbu capitalizes on the social engineering schemes of other scammers, injecting malicious JavaScript code into their malicious decentralized application websites to steal cryptocurrency.
We discovered a threat actor we named Water Labbu that was targeting cryptocurrency scam websites. Typically, cryptocurrency scammers use social engineering techniques, interacting with victims to gain their trust and then manipulating them into providing the permissions needed to transfer cryptocurrency assets.…
Editor’s Note: The following post is an excerpt of a full report. To read the entire analysis, click here to download the report as a PDF.
This report profiles the unique infrastructure used by the threat activity group UAC-0113, which is linked with moderate confidence by CERT-UA to Sandworm.…
Following the recent Twilio hack leading to the leakage of 2FA (OTP) codes, cybercriminals continue to upgrade their attack arsenal to orchestrate advanced phishing campaigns targeting users worldwide. Resecurity has recently identified a new Phishing-as-a-Service (PhaaS) called EvilProxy advertised in the Dark Web. On some sources the alternative name is Moloch, which has some connection to a phishing-kit developed by several notable underground actors who targeted the financial institutions and e-commerce sector before.…
Author: Tomer Bar, VP Security Research, SafeBreach
SafeBreach Labs researchers are constantly monitoring the hacker underground, sourcing intelligence feeds, and conducting original research to uncover new threats and ensure our Hacker’s Playbook provides the most comprehensive collection of attacks. As part of this ongoing effort, we recently discovered a new targeted attack we believe is compelling for four main reasons:
It appears to target Farsi-speaking code developers by using a Microsoft Word document that includes a Microsoft Dynamic Data Exchange (DDE) exploit.…Summary
Actions for ZCS administrators to take today to mitigate malicious cyber activity:
• Patch all systems and prioritize patching known exploited vulnerabilities.
• Deploy detection signatures and hunt for indicators of compromise (IOCs).
• If ZCS was compromised, remediate malicious activity.
Updated November 10, 2022: This product was written by the Cybersecurity and Infrastructure Security Agency (CISA) and the Multi-State Information Sharing and Analysis Center (MS-ISAC) with contributions by the Federal Bureau of Investigation (FBI).…
We recently discovered a zero-day vulnerability in Google Chrome (CVE-2022-2294) when it was exploited in the wild in an attempt to attack Avast users in the Middle East. Specifically, a large portion of the attacks took place in Lebanon, where journalists were among the targeted parties.…
Raccoon Stealer was one of the most prolific information stealers in 2021, being used by multiple cybercriminal actors. Due to its wide stealing capabilities, the customizability of the malware and its ease of use, Raccoon Stealer was highly popular among threat actors. The malware was mainly distributed using fake installers, or as cracked versions of popular software.…
By Flavio Costa,
In a recent customer engagement, we observed a month-long AvosLocker campaign. The attackers utilized several different tools, including Cobalt Strike, Sliver and multiple commercial network scanners. The initial ingress point in this incident was a pair of VMWare Horizon Unified Access Gateways that were vulnerable to Log4Shell.…This post is also available in: 日本語 (Japanese)
Executive SummaryHelloXD is a ransomware family performing double extortion attacks that surfaced in November 2021. During our research we observed multiple variants impacting Windows and Linux systems. Unlike other ransomware groups, this ransomware family doesn’t have an active leak site; instead it prefers to direct the impacted victim to negotiations through TOX chat and onion-based messenger instances.…
We analyze the Black Basta ransomware and examine the malicious actor’s familiar infection tactics.
Black Basta, a new ransomware gang, has swiftly risen to prominence in recent weeks after it caused massive breaches to organizations in a short span of time.
On April 20, 2022, a user named Black Basta posted on underground forums known as XSS.IS…
This blog post was authored by Ankur Saini, with contributions from Hossein Jazi and Jérôme Segura
(2022-04-07): Added MITRE ATT&CK mappings
(2022-04-07): Changed the name of the final payload from Vidar to Mars Stealer
Colibri Loader is a relatively new piece of malware that first appeared on underground forums in August 2021 and was advertised to “people who have large volumes of traffic and lack of time to work out the material“.…
February 3, 2022
by Steven Adair, Thomas Lancaster
[UPDATE] On February 4, 2022, Zimbra provided an update regarding this zero-day exploit vulnerability and reported that a hotfix for 8.8.15 P30 would be available on February 5, 2022. This vulnerability was later assigned CVE-2022-24682 and was fixed in version 8.8.15P30 Update 2 of Zimbra Collaboration Suite.…