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Proactive Defense: The Importance of Incident Response Planning in Cybersecurity
Rewterz Threat Alert – ServHelper Backdoor – Active IOCs
September 6, 2021Rewterz Threat Advisory – ICS: Advantech WebAccess BwFLApp Stack-based Buffer Overflow Remote Code Execution
September 6, 2021Rewterz Threat Alert – ServHelper Backdoor – Active IOCs
September 6, 2021Rewterz Threat Advisory – ICS: Advantech WebAccess BwFLApp Stack-based Buffer Overflow Remote Code Execution
September 6, 2021
Severity
High
Analysis Summary
SNAKE ransomware is targeting networks and aiming to encrypt all of the devices connected to them. The ransomware contains a level of routine obfuscation not previously and typically seen coupled with the targeted approach. When started Snake will remove the computer’s Shadow Volume Copies and then kill numerous processes related to SCADA systems, virtual machines, industrial control systems, remote management tools, network management software, and more. It then proceeds to encrypt the files on the device, while skipping any that are located in Windows system folders and various system files. When encrypting a file it will append a ransom 5 character string to the files extension. For example, a file named 1.doc will be encrypted and renamed like 1.docqkWbv.F
Impact
- File Encryption
Indicators of Compromise
MD5
- 25dea74394f2f53bd310d6a08f63ff7b
- b4adab1ff6684c3b86b80659eece8faf
SHA-256
- f8ade39a8a4d146876556bcd93a09dc4b2f1ffe5adb33cf25f633171ba1f66f4
- 057d143b1293ed52bfeabba586e2ef6d95b850210653e24071f5964a39843210
SHA-1
- 40ee8d8aab4dd64172891f77d970046e3fec2a1e
- 2f2f37227c0b7b6bd4abc0de5f2a608c8c42b3e0
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.
