Home Malware Programs Ransomware CerBerSysLock Ransomware

CerBerSysLock Ransomware

Posted: December 12, 2017

Threat Metric

Ranking: 11,874
Threat Level: 2/10
Infected PCs: 110
First Seen: August 23, 2022
Last Seen: October 4, 2023
OS(es) Affected: Windows

The CerBerSysLock Ransomware is a file-locker Trojan that pretends to be an update of the Cerber Ransomware, although it uses a simple encryption method and is most closely related to the Xorist Ransomware's family. Besides backing up content to keep the CerBerSysLock Ransomware from damaging it permanently, users should be mindful of e-mail attachment and document-based infection vectors for this threat. Most anti-malware programs should block the CerBerSysLock Ransomware immediately, but also may uninstall it after an attack safely.

Intentionally Mistaken Identities Among Trojans

For many cybercrooks, pretending to be talented and dedicated is a viable substitution for legitimate talent and effort, which many of the 'copycat' Trojan campaigns demonstrate unintentionally. These threats hijack the brand-based identities of their competition while imitating many of their symptoms, which can cause the victim to overreact or perform self-destructive actions inadvertently. While malware experts find new specimens in this field weekly, most of them, like the CerBerSysLock Ransomware, also include real dangers along with their tactics.

The CerBerSysLock Ransomware may be under management by the same threat actors that are responsible for the TrickBot banking Trojan and uses a similar code-packing method to prevent some security solutions from finding it. Victims may compromise themselves after opening fake invoices and other, document-formatted e-mail attachments that embed vulnerabilities facilitating the Trojan's installation.

When it runs, the CerBerSysLock Ransomware searches all directories for small file formats such as pictures and documents that it can encrypt. It uses a simple, XOR-based enciphering mechanism to block all of these files, and also adds '.CerBerSysLocked0009881' extensions to their names. It carries this Cerber Ransomware-based theme into the text messages it also creates, which claim that it's a 5.0 version of that threat and asks the user to contact an e-mail address for further ransoming demands. Malware analysts can corroborate the CerBerSysLock Ransomware being unrelated to the Cerber Ransomware family and, as usual, discourage paying for regaining your data.

Matching the Key to Your Media's Jail Door

File-locking Trojans who deliver fake information about their identities often do so to keep victims from helping themselves by finding appropriate, free solutions for decryption and data restoration. Malware experts do encourage backing up data preemptively to make a decryptor unnecessary, but also emphasize the widespread availability of freeware decryption apps for simple threats like the CerBerSysLock Ransomware. Cyber-security researchers with experience in analyzing file-locking Trojans usually can decode XOR-based attacks, with appropriate samples.

The corrupted documents that the CerBerSysLock Ransomware may be installing itself with could involve macro-based vulnerabilities that the user has to consent to load. Leaving such content disabled and scanning all downloads, particularly text documents, eliminates most of the installation exploits that this threat might use. Even afterward, professional anti-malware suites should delete the CerBerSysLock Ransomware immediately without its being able to lock your files.

Decryption tools specialize in highly-specific families of file-locking Trojans. Copying your files for further experimentation is a valid way of avoiding problems while recovering from the CerBerSysLock Ransomware, and impostors just like it.

Technical Details

Additional Information

The following URL's were detected:
check-now.online
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