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May 30, 2023
Severity High Analysis Summary Recently, researchers discovered an advanced phishing method called “file archiver in the browser” that exploits .ZIP domains to deceive unsuspecting individuals. This […]May 28, 2023Severity High Analysis Summary An email protection and network security services provider has issued a warning regarding a zero-day vulnerability that has been exploited to compromise […]May 26, 2023Severity High Analysis Summary CVE-2023-32165 CVSS:9.8 D-Link D-View could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in TftpReceiveFileHandler […]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
May 30, 2023Severity High Analysis Summary Recently, researchers discovered an advanced phishing method called “file archiver in the browser” that exploits .ZIP domains to deceive unsuspecting individuals. This […]May 28, 2023Severity High Analysis Summary An email protection and network security services provider has issued a warning regarding a zero-day vulnerability that has been exploited to compromise […]May 26, 2023Severity High Analysis Summary CVE-2023-32165 CVSS:9.8 D-Link D-View could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in TftpReceiveFileHandler […]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 Alert – Everis Bitpaymer Ransomware – IOC’s
November 7, 2019Rewterz Threat Alert – PKPLUG: Chinese Cyber Espionage Group Attacking Asia
November 7, 2019
Severity
High
Analysis Summary
A new phishing campaign is discovered using a ZIP file that was designed to bypass secure email gateways to distribute the NanoCore RAT. It’s a spam email pretending to be shipping information from an Export Operation Specialist of USCO Logistics. It looked suspicious as the ZIP’s file size was greater than its uncompressed content. Below is the email body emphasizing on the attachment.
After the first EOCD comes some extra data – another ZIP file structure. It turns out that the first ZIP structure is for the image file “order.jpg” while the second one is for an executable file “SHIPPING_MX00034900_PL_INV_pdf.exe“. The image file is benign while the “SHIPPING_MX00034900_PL_INV_pdf.exe“ is a NanoCore RAT. This remote access trojan has the capability that allows an attacker to completely take control of the compromised machine. It connects to its command and control server at 194.5.98[.]85 on port 11903. This NanoCore RAT is version 1.2.2.0.
TrustWave determined that only certain versions of the PowerArchiver, WinRar, and older 7-Zip utilities properly extracted the NanoCore executable.
Impact
- Unauthorized Access
- Device Takeover
Indicators of Compromise
Filename
- SHIPPING_MX00034900_PL_INV_pdf.zip
- SHIPPING_MX00034900_PL_INV_pdf.exe
MD5
- 5e67dc41d0826d86ff6eb5fa03fcd836
- 7f8b1f146b1495fe8d81952b06c0b45b
SH256
- e90b970c5e5ddf821d6f9f4d7d710d6dc01d59b517e8fb39da726803dc52b5ad
- 91d539af85599fda3fb2fb023866b72d64adc2bb95f6153e655cc844564de02e
SHA1
- 9474e1517c98d4165300a49612888d16643efbf6
- 06b80f9a0fba1d830dcf2ecf225ed1d19060589a
Source IP
194.5.98[.]85
Remediation
- Block the threat indicators at their respective controls.
- Do not download/execute files attached in untrusted emails.
- Closely monitor all communication at port 11903.