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

• 11175c34d3af9941e4fd015f3e5c4b15

• 9fda21eb0955b3af2c5c5207afb89f07

• 30cca9b4caac612351124a0b3a39e0cb

SHA-256

• fb94e060b3129d360e4286a75d04dc396d3ffff274df3491ce429b05d7d24530

• 1ba2dece7e8dd30f7719af81ab01c9666ce37d0236c90bde92c98d84060c4024

• d641aef734578f5f4f79323d1a00dc23a9a5f12dc085ed433784f41ffec1ad7a

SHA1

• 8752e432295b582d135e93fe4013a65254e94ce4

• 400c6677d29610b88e2be5957a46d00689ea550d

• 4980046dae3fc819059347fae041e3d547361d14

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.