tool
VBShower S0442
- Type
- malware
- Platform
- Windows
- Created
- 8 May 2020
- Last modified
- 25 April 2025
VBShower is a backdoor that has been used by Inception since at least 2019. VBShower has been used as a downloader for second stage payloads, including PowerShower.[1]
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0442
VBShower has attempted to complicate forensic analysis by deleting all the files contained in %APPDATA%\..\Local\Temporary Internet Files\Content.Word and %APPDATA%\..\Local Settings\Temporary Internet Files\Content.Word\.3
VBShower has attempted to obtain a VBS script from command and control (C2) nodes over HTTP.4
VBShower has the ability to download VBS files to the target computer.5
VBShower used HKCU\Software\Microsoft\Windows\CurrentVersion\Run\\[a-f0-9A-F]{8} to maintain persistence.6
Standing S0442
Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.
Reach
23rd percentile · 77% of 825 ATT&CK software entries have more Enterprise techniques.
41st percentile · 59% of 825 ATT&CK software entries have more tactics spanned.
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
90th percentile · 90% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Detection coverage S0442
294 distinct rules cover the 5 techniques recorded for this tool. The 298 technique-to-rule mappings resolve to 294 distinct rules, because one rule can cover several techniques. 212 Sigma · 82 Splunk.
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