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Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
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March 15, 2023Severity High Analysis Summary According to researchers, a Golang-based botnet named GoBruteforcer has been discovered, which is specifically targeting web servers running FTP, MySQL, phpMyAdmin, and […]March 15, 2023Severity High Analysis Summary DarkComet RAT (Remote Administration Tool) is a type of malware that is designed to allow attackers to gain remote access to a […]March 15, 2023Severity High Analysis Summary CVE-2023-23410 CVSS:7.8 Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
March 15, 2023Severity High Analysis Summary According to researchers, a Golang-based botnet named GoBruteforcer has been discovered, which is specifically targeting web servers running FTP, MySQL, phpMyAdmin, and […]March 15, 2023Severity High Analysis Summary DarkComet RAT (Remote Administration Tool) is a type of malware that is designed to allow attackers to gain remote access to a […]March 15, 2023Severity High Analysis Summary CVE-2023-23410 CVSS:7.8 Microsoft Windows could allow a local authenticated attacker to gain elevated privileges on the system, caused by a flaw in […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Advisory – CVE-2018-16871 – Linux Kernel “nfsd4_verify_copy()” Vulnerability
June 3, 2019Rewterz Threat Alert – GoldBrute Botnet Brute Forcing 1.5 Million RDP Servers
June 10, 2019
Severity
Medium
Analysis Summary
A new malware family they have labeled “BlackSquid”. This malware targets web servers, network drives, and removable drives. For defense, BlackSquid employs anti-virtualization, anti-debugging, and anti-sandboxing methods, and will abort its installation if it determines it is being examined. Usernames are checked against a list of common sandbox usernames, diskdrive model names are compared to common virtual drive names, and the device driver names are also compared against a list of common names to determine if the infection should continue or not. For offense, it utilizes eight exploits, including EternalBlue and DoublePulsar, as well as dictionary attacks to gain access to its target. Once installed, it has the ability to propagate laterally within the network.
Vulnerabilities Exploited
CVE-2014-6287
CVE-2014-6287
CVE-2017-8464
CVE-2017-12615
CVE-2017-0146
CVE-2017-0145
CVE-2017-0144
Impact
Exposure of sensitive information
Indicators of Compromise
URLs
- http[:]//m9f[.]oss-cn-beijing[.]aliyuncs[.]com/A[.]exe
- http[:]//m9f[.]oss-cn-beijing[.]aliyuncs.com/Black[.]hta
Malware Hash (MD5/SHA1/SH256)
- 14f8dc79113b6a2d3f378d2046dbc4a9a7c605ce24cfa5ef9f4e8f5406cfd84d
- 3596e8fa5e19e860a2029fa4ab7a4f95fadf073feb88e4f82b19a093e1e2737c
- 515caf6b7ff41322099f4c3e3d4846a65768b7f4b3166274afc47cb301eeda98
- 8974da4d200f3ca11aa0bc800f23d7a2be9a3e4e6311221888740c812d489116
- 8dbd331784e620bb0ca33b8515ca9df9a7a049057b39a2da5242323943d730b4
- aa259b168ec448349e91a9d560569bdb6fabd811d78888c6080065a549f60cb0
Remediation
- Block threat indicators at your respective controls.
- Make sure all vulnerable devices are up-to-date and patched against these vulnerabilities.