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

• 4b639fa4b53ebb236e0e07395e1e2393
• a129e6a919043d62a49c615b80be5f88
• 629866cf7074c354fc4bcc86f9c3994a
• b7fcd8d0429e1001ac2b10de60a2d42e
• 2c00487853a61f6767cd12af4af9df2a

SHA-256

• 3c195593808549d5441dbc38f0df010629889f375c3f5901dff0be8b8bf171f6
• f4146aecc21e1413da1fec7e17e20a6fb90adc191c82239b24f178251baddb14
• 7e4a5ae93d909f12373b8ccca1311f155b4fe6f0fdc016a0fe85c6a843830aee
• 0e432916a8dabba9ee190f7cc5260c619d8b35ae84048c165f86a79d5bc9f4a2
• 3e41d664051e58f25c2b38755a41ed162df2da9e619675bd1ffd90ffa68d960c

SHA1

• 56d0c42784fdf494481a34bdb75cf0eace75859d
• c86a17efd90c3a7f792aa3934ed1e613d69fe901
• 72822fabaf71df22d598406a2b1c532c05ba678e
• b0a6291666d683aee0b42a9a074b107ef42c64cd
• c720586be075d6f11df8a0ccf546b63faeaadc85

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.