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Looks for suspicious base64 encoded registry keys being created.
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Original Sigma Rule: https://github.com/Neo23x0/sigma/blob/master/rules/apt/apt_bear_activity_gtr19.yml.
Questions via Twitter: @janvonkirchheim.
Questions via Twitter: @janvonkirchheim.
ZLoader was delivered in a campaign in late summer 2021 using malvertising to download malicious .msi files onto affected machines. This campaign was originally tweeted by @MsftSecIntel on Twitter.
In this campaign, the malicious .msi files create registry keys that use that attacker-created comapny names.
In this campaign, the malicious .msi files create registry keys that use that attacker-created comapny names.
MosaicLoader
KQL
This hunting query looks Malware Hides Itself Among Windows Defender Exclusions to Evade Detection
Original Sigma Rule: https://github.com/Neo23x0/sigma/blob/master/rules/apt/apt_oceanlotus_registry.yml.
Questions via Twitter: @janvonkirchheim.
Questions via Twitter: @janvonkirchheim.
This query was originally published in the threat analytics report, WinRAR CVE-2018-20250 exploit
WinRAR is a third-party file compressing application. Versions 5.61 and earlier contained a flaw that could be exploited by an attacker to read and write to an arbitrary path on the target's system. This could be used to run arbitrary code, overwrite system files, or access sensitive information. This vulnerability was designated CVE-2018-20250, and it is associated an outdated version of the legacy ACE compression library, 'unacev2.dll'.
The following query detects possible CVE-2020-20250 exploitation by looking for files created in the Startup folder.
Reference - https://nvd.nist.gov/vuln/detail/CVE-2018-20250
WinRAR is a third-party file compressing application. Versions 5.61 and earlier contained a flaw that could be exploited by an attacker to read and write to an arbitrary path on the target's system. This could be used to run arbitrary code, overwrite system files, or access sensitive information. This vulnerability was designated CVE-2018-20250, and it is associated an outdated version of the legacy ACE compression library, 'unacev2.dll'.
The following query detects possible CVE-2020-20250 exploitation by looking for files created in the Startup folder.
Reference - https://nvd.nist.gov/vuln/detail/CVE-2018-20250