Owassrf

Vulnerability Profile Updated 3 months ago
Download STIX
Preview STIX
OWASSRF is a software vulnerability that presents a significant security risk to Microsoft Exchange Server systems. It's an exploit method that bypasses ProxyNotShell vulnerability mitigations, allowing for remote code execution on vulnerable servers through Outlook Web Access. This vulnerability has been utilized by ransomware groups such as Cuba and Play to target the CVE-2022-41080 flaw and compromise unpatched Microsoft Exchange servers. The exploitation of OWASSRF was first reported in January 2023. The threat posed by OWASSRF extends beyond its initial discovery. The vulnerability has been used in conjunction with other known exploits like ProxyLogon, ProxyShell, and ProxyNotShell, demonstrating the evolving capabilities of malicious actors. In particular, it's suspected to be a potential infection vector for BellaCiao malware found on Exchange Servers. Despite uncertainty regarding the exact deployment method, the presence of this malware on servers indicates that attackers are leveraging one or more of these vulnerabilities. To mitigate the risks associated with OWASSRF and related vulnerabilities, organizations are advised to implement Anti-Exploitation modules and Behavioral Threat Protection. These measures offer protection against the exploitation of different vulnerabilities, including ProxyShell, ProxyLogon, and OWASSRF. As ransomware attacks continue to pose a clear danger to entities worldwide, it's crucial that organizations maintain up-to-date security protocols and ensure their systems are patched against known vulnerabilities.
What's your take? (Question 1 of 5)
Help tune the shared Cybergeist dataset, assist your peers, and earn karma. Expand the panel to get started.
Possible Aliases / Cluster overlaps
It's hard to track cluster overlaps and naming conventions between vendors, so here are some possible overlapping names / profiles you also may want to look at.
IDVotesProfile Description
Proxynotshell
4
ProxyNotShell is a software vulnerability, specifically a flaw in the design or implementation of Microsoft Exchange Server. It was first identified and exploited through CVE-2022-41082, as reported by Palo Alto Networks' Unit 42. The ProxyNotShell exploit method leveraged an AutoDiscover endpoint t
Miscellaneous Associations
Other elements of context that could aid in the identification of relevance
Exploit
Remote Code ...
Vulnerability
Outlook
Exploits
Ransomware
RCE (Remote ...
exploitation
Implant
Backdoor
Malware
Ransom
Associated Malware
To see the evidence that has resulted in this association, create a free account
IDTypeVotesProfile Description
BellaciaoUnspecified
1
"BellaCiao" is a .NET-based malware linked to the Iran-sponsored group known as Charming Kitten (also referred to as Newsbeef and APT35). First observed in use since at least November 2022, this malicious script dropper has targeted systems in Afghanistan, Austria, Israel, and Turkey. Likely exploit
WannaCryUnspecified
1
WannaCry is a type of malware, specifically ransomware, that caused significant global disruption in 2017. It exploited Windows SMBv1 Remote Code Execution Vulnerabilities (CVE-2017-0144, CVE-2017-0145, CVE-2017-0143), which allowed it to spread rapidly and infect over 200,000 machines across more t
Associated Threat Actors
To see the evidence that has resulted in this association, create a free account
IDTypeVotesProfile Description
No associations to display
Associated Vulnerabilities
To see the evidence that has resulted in this association, create a free account
IDTypeVotesProfile Description
CVE-2022-41080Unspecified
3
CVE-2022-41080 is a significant software vulnerability identified in 2022, specifically a flaw in the design or implementation of Microsoft Exchange Server. This vulnerability enables Server-Side Request Forgery (SSRF), potentially allowing malicious actors to manipulate server requests and execute
CVE-2022-41082Unspecified
2
CVE-2022-41082 is a critical software vulnerability discovered in Microsoft Exchange Servers, which allows for Remote Code Execution (RCE). This flaw is one of two zero-day vulnerabilities found, the other being CVE-2022-41040. The RCE vulnerability presents a significant threat as it enables attack
ProxyshellUnspecified
1
ProxyShell is a critical vulnerability affecting Microsoft Exchange email servers. Identified as CVE-2021-34473, it is a flaw in software design or implementation that can be exploited by attackers to gain unauthorized access to systems. The vulnerability was actively exploited by threat actors, cau
CVE-2022-41040Unspecified
1
CVE-2022-41040 is a software vulnerability that was discovered in late September 2022, along with another flaw, CVE-2022-41082. These two zero-day vulnerabilities were collectively known as ProxyNotShell. The vulnerabilities were exploited to compromise Microsoft Exchange through the proxy mechanism
Source Document References
Information about the Owassrf Vulnerability was read from the documents corpus below. This display is limited to 20 results, create a free account to see more
SourceCreatedAtTitle
CERT-EU
6 months ago
The Top 10 Ransomware Groups of 2023
CERT-EU
10 months ago
Florian Roth, Author at Nextron Systems
CERT-EU
a year ago
8 of the Biggest Ransomware Attacks in Recent History: A Look Back
Checkpoint
a year ago
26th December – Threat Intelligence Report – Check Point Research
CSO Online
a year ago
Iranian cyberspies deploy new malware implant on Microsoft Exchange Servers
CSO Online
a year ago
Azure API Management flaws highlight server-side request forgery risks in API development
Securityaffairs
a year ago
Charming Kitten used a new BellaCiao malware in recent wave of attacks
Unit42
a year ago
Threat Group Assessment: Mallox Ransomware
CERT-EU
a year ago
Dragos releases industrial ransomware analysis for Q1 2023 | #ransomware | #cybercrime – National Cyber Security Consulting
CERT-EU
a year ago
Cybersecurity threatscape: Q1 2023
CERT-EU
8 months ago
Play ransomware is now available as Ransomware-as-a-Service
Unit42
a year ago
Threat Brief: OWASSRF Vulnerability Exploitation