Medium

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

• 7aac3c5bf1abdc1232133edd6ca2918b

• ffacd1e09b4e38f913791ccbbb027369

• fb22e2b713cb7a31693f7e34ccfaebdb

SHA-256

• 49d597f824dc68a4f9f404f9e20774ff6a502680849ebbfecf3427ed0cdae5e7

• 5883bfbb8849529d61723a2ed3082eab3ab5145fdac7f76408d43114b36b1647

• 71e4d38127af57ea7f4071a67b3012b550f3bc0e28c6372cb230f82711c6c1a4

SHA1

• f4e013e35af83250a8cfd7586a2967e1dcc19497

• 460f5e2a222604ce3bbc6f521cd7d9354ee26fbc

• a85fa449b29ad723033289ff8fb8a787d21ed058

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.