tool

Denis S0354

Type: malware
Platform: Windows
Created: 30 January 2019
Last modified: 16 April 2025

Denis is a Windows backdoor and Trojan used by APT32. Denis shares several similarities to the SOUNDBITE backdoor and has been used in conjunction with the Goopy backdoor.[1]

TechniquesTop 20%

Tactics53rd pct

Threat groupunranked

CampaignsNone recorded

Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.

MITRE reference S0354

Query Registry T1012↗

Denis queries the Registry for keys and values.2

Discovery27 detection rules

System Network Configuration Discovery T1016↗

Denis uses ipconfig to gather the IP address from the system.3

Discovery25 detection rules

Obfuscated Files or Information T1027↗

Denis obfuscates its code and encrypts the API names.4

Stealth116 detection rules

Command Obfuscation T1027.010↗

Denis has encoded its PowerShell commands in Base64.5

Stealth12 detection rules

System Owner/User Discovery T1033↗

Denis enumerates and collects the username from the victim’s machine.6 7

Discovery47 detection rules

Process Hollowing T1055.012↗

Denis performed process hollowing through the API calls CreateRemoteThread, ResumeThread, and Wow64SetThreadContext.8

Privilege Escalation · Stealth6 detection rules

Standing S0354

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

Techniques20Top 20%

80th percentile · 80% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.

Tactics653rd pct

53rd percentile · 53% of 825 ATT&CK software entries have this many tactics spanned or fewer.

Threat group161% tie · 22 values

61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.

Campaigns085% tie · 8 values

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

Rules / technique28med71st pct

71st percentile · 71% of 825 ATT&CK software entries have this many detection rules per technique or fewer.

Tests / technique7med

Detection coverage S0354

864 distinct rules cover the 20 techniques recorded for this tool. The 1031 technique-to-rule mappings resolve to 864 distinct rules, because one rule can cover several techniques. 644 Sigma · 220 Splunk.

19 covered by at least one rule1 with no coverage864 distinct rules in total

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MITRE reference S0354

Reach

Coverage

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