Rewterz Threat Alert – MuddyWater APT – Active IOCs

Severity

High

Analysis Summary

APT MuddyWater – an Iran-based APT – has been operating since at least 2017. This APT group utilizes the common but efficient infection vector, spear-phishing, to perform their tasks. It has mostly targeted countries in the Middle East but also affected countries in Europe and North America. The majority of the group’s victims are in the telecoms, government (IT services), and oil industries. This group’s activity was formerly related to FIN7, however, it is now regarded to be a separate entity driven by espionage. 

MuddyWater’s majority of attacks are based on social engineering. It lures its victims into activating macros so that would infect the targeted workstation. Once macros were turned on, the threat actor’s code would try to download a trojan from an adversarial payload command and control node.

According to U.S. and U.K. federal agencies, MuddyWater is conducting cyber espionage and other malicious cyber operations as part of Iran’s Ministry of Intelligence and Security (MOIS), targeting a range of government and private-sector organizations across sectors—including telecommunications, defense, local government, and oil and natural gas—in Asia, Africa, Europe, and North America. 

Impact

• Credential Theft
• Exposure of Sensitive Information

Indicators of Compromise

Filename

• ZaibCb15Ak[.]xls
• Outlook[.]wsf
• main[.]exe
• Cooperation terms[.]xls

MD5

• df648ccd3b842ce0128318629b5cbd0d
• e1f97c819b1d26748ed91777084c828e
• 887f345dce4426b9c841c7fde581b18f
• 69ff29b86ab5444197aeb0cf5eba0967

SHA-256

• 7de663524b63b865e57ffc3eb4a339e150258583fdee6c2c2ca4dd7b5ed9dfe7
• ed988768f50f1bb4cc7fb69f9633d6185714a99ecfd18b7b1b88a42a162b0418
• a500e5ab8ce265d1dc8af1c00ea54a75b57ede933f64cea794f87ef1daf287a1
• cc67e663f5f6cea8327e1323ecdb922ae8e48154bbf7bd3f9b2ee2374f61c5d6

SHA-1

• eae3b67508ac5df766609f1630b615c0110cd6fe
• 4209a007fcf4d4913afad323eb1d1ae466f911a6
• 59ae2ee86e7f9f90fc3c5737355e88b59b00fa2a
• 4808cae5e9684e691490a652a93a56005d603643

Remediation

• Logging – Log your eCommerce environment’s network activity and web server activity.
• Passwords – Implement strong passwords.
• Admin Access – limit access to administrative accounts and portals to only relevant personnel and make sure they are
• not publicly accessible.
• WAF – Set up a Web Application Firewall with rules to block suspicious and malicious requests.
• Patch – Patch and upgrade any platforms and software timely. Prioritize patching known exploited vulnerabilities.
• 2FA – Enable two-factor authentication.
• Antivirus – Enable antivirus and anti-malware software and update signature definitions in a timely manner.