Vidar is a Windows infostealer that was first advertised in November 2018. Written in C++, Vidar collects PII, cryptocurrency wallets, documents and other data within the compromised machine. Version 2 of Vidar was published in October 2025, and has been used in numerous operations since its release. Vidar has been observed alongside other malware strains, including STOP/Djvu ransomware, Mina.exe (an XMRIG miner), and Clip1.exe (a Laplas Clipper sample).[1][2][3][4][5][6][7][8]
53
TechniquesTop 1%
12
TacticsTop 1%
1
Threat groupunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
Vidar has obfuscated and/or AES-encrypted its core code to avoid debugger and/or analysis tools.1415Vidar has used XOR to obfuscate the DLL name and the function name with key 0x05 to evade static string scanning.1615Vidar has Base64-encoded information relating to cryptocurrency wallet extensions.17
Stealth1 detection rules
Standing S9050
Reach is how much of ATT&CK this malware 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 842 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
Techniques53Top 1%
99th percentile · 99% of 842 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics12Top 1%
100th percentile · None of the 842 ATT&CK software entries has more tactics spanned — the highest in the population.
Threat group162% tie · 22 values
62% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
Campaigns086% tie · 8 values
86% 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 / technique13medBottom 25%
25th percentile · 75% of 842 ATT&CK software entries have more detection rules per technique.
Tests / technique4med28th pct
28th percentile · 72% of 842 ATT&CK software entries have more atomic tests per technique.
Data comps / technique5med53% tie · 11 values
53% of the population shares a single value across only 11 distinct values, so a percentile here would rank the tie, not the entity.
Mitigations / technique2medTop 8%
92nd percentile · 92% of 842 ATT&CK software entries have this many mitigations per technique or fewer.
5 of 8 axes carry an honest rank on this page. Coverage medians are taken across this malware’s 53 Enterprise techniques.
Range
Technique Campaign use over its cumulative rule count.
Detects the suspicious file that is created from PoC code against Windows Print Spooler Remote Code Execution Vulnerability CVE-2021-34527 (PrinterNightmare), CVE-2021-1675 .
Detects when AppLocker "Audit only" enforcement mode reports that an Application, DLL, Script, MSI, or Packaged-App would have been blocked if AppLocker "Enforce rules" enforcement mode was enabled.
The following analytic detects the execution of tools commonly exploited by cybercriminals, such as those used for unauthorized access, network scanning, privilege escalation, password dumping or data exfiltration. (...)
This search surfaces AWS Bedrock Claude prompts containing phrases commonly associated with prompt injection or jailbreak attempts, such as instruction overrides, persona switching, or requests to ignore prior guidance. (...)
This detection identifies sensitive data such as social security numbers, passwords, API keys, and credit card numbers being sent in prompts to AWS Bedrock Claude models. (...)
This detection identifies unusually large prompts sent to AWS Bedrock Claude models by calculating the statistical baseline of input token counts and flagging requests that exceed one standard deviations above the mean. (...)