Rewterz Threat Alert – HermeticWiper and IsaacWiper – Active IOCs – Russian-Ukrainian Cyber Warfare
March 2, 2022Rewterz Threat Alert – ColdStealer Malware – Active IOCs
March 2, 2022Rewterz Threat Alert – HermeticWiper and IsaacWiper – Active IOCs – Russian-Ukrainian Cyber Warfare
March 2, 2022Rewterz Threat Alert – ColdStealer Malware – Active IOCs
March 2, 2022Severity
High
Analysis Summary
Ryuk Ransomware is a ransomware family that was first found in the wild in August 2018. It is one of the most virulent ransomware strains on the market. Ryuk has been observed being used to attack companies or professional environments. This ransomware can lock your files or systems and hold them hostage for ransom. Ryuk targets high-profile enterprises in order to obtain essential information that will impair the victim’s operations.
Ryuk is a form of ransomware used in targeted attacks, in which threat actors encrypt important data to demand big ransom payments. Emotet or TrickBot malware is widely used to spread Ryuk ransomware. Ryuk’s code is comparable to that of the Hermes ransomware. The Ryuk ransomware is believed to be operated by the Russian cybercriminal group WIZARD SPIDER.
Impact
- File encryption
- Privilege Escalation
- Information Theft
- Data Exfiltration
- Network Compromise
Indicators of Compromise
Filename
- jCZhDLshvrep[.]exe
- 1582r[.]exe
- RecurseExec[.]EXE
MD5
- a563c50c5fa0fd541248acaf72cc4e7d
SHA-256
- 180f82bbedb03dc29328e32e054069870a1e65078b78b2120a84c96aaed7d843
SHA-1
- 4b8c12b074e20a796071aa50dc82fe2ff755e8f6
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment