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Severity
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 of Sensitive Data
Indicators of Compromise
MD5
- 7bf38b26c354381d1b155b4b20aa6453
- 51270b818def38e17073dd97ec6d96ea
- 01c1f9a5f7239deb1b2d677d2a3ffe3a
- 410700904dcc4cc2c936724bfc00977f
SHA-256
- cea47650f92e6b73107d0eddc5e8e66ac5725fe1a0002ddc38b4f500fd15dfed
- bf35fe6ed1dbd9f9594695e2ca5bd3d5f5b2706461ddc8f29344849a03c74008
- 6c5eea2d93dc13108a6020ae7f0bf6f432d0c99ddae8edbc4ed56557c497bf91
- fad4ad2b20d69fe58683c50e3f69e0278c37eae9f12cf81e44243a146361c082
SHA-1
- 8d2da4de91657b4fa0bd670ecf788d44a96f6b3b
- af54b7e42ef87abe7bd87b01cd63ab49a0a86926
- 84d309197ee936daeca6c345be6d61090b2a6524
- cab3cc48d7050165c60845de3cba1857ea8dfd22
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.