Analysis Summary

GCleaner is a type of malware that disguises itself as a legitimate software program called "GCleaner" or "G-Cleaner." It is typically spread through malicious email attachments or fake software downloads. Once installed on a computer, GCleaner can gather personal information, display unwanted ads, and cause other malicious activity. To avoid the detection by Anti-virus they changed their technique by distributing these malware through crack websites. When these cracks are executed, they emit various payloads. Depending on the country it emits various malware which includes STOP/DJVU ransomware, SmokeLoader, Redline, Amadey, Flicker, and Racoon Stealer. The countries that were mostly targeted were the US, EU, and CA.

It is important to keep your anti-virus software updated and to be cautious when downloading and installing programs, particularly from untrusted sources.

Impact

• Information Theft
• Credential Theft
• Exposure to Sensitive Data

Indicators of Compromise

MD5

• f886224fcae94f279e57866ebe25ea2a

• 7f27d225aa3f116880004186725b0a88

• 85d109292900f309271b1da5101783ac

SHA-256

• 01c3b22efb07d44d2102650a3896e08c4cd5424b176a943fa7e7e93def3dc231

• 147d8db1e9c0a4ff6ae8b02342054c3d9a8d4d7ea25ab3adea6641cde8c7d065

• 43998d323172b680b5e11457af870adef4f0593eb3c35a0eccbbc172e15cf068

SHA1

• 21361b4c9f9023e946aaf4454ff311c4ae108877

• c5cb2a6abb97a21b6c548bd17b4e20af6c2212b4

• 55ef69be3c0f1010d22e2d47a564db7b0ac49385

Remediation

• Block all threat indicators at your respective controls.
• Search for indicators of compromise (IOCs) in your environment utilizing your respective security controls.
• Patch and upgrade any platforms and software timely and make it into a standard security policy. Prioritize patching known exploited vulnerabilities and zero-days.
• Enable antivirus and anti-malware software and update signature definitions promptly. Using multi-layered protection is necessary to secure vulnerable assets.