Safe
Unsigned ZIP named 4n4lDetectorV3.5.zip matches research tool profile with anti-analysis behaviors flagged heuristically by our antivirus network.
b311912a1d481a7010…3f3c70b2eeThe verdict, reasoned out.
Not a rules engine. The MT AI Engine reads every signal we collected, weighs them against history, and commits to an answer.
Filename and heuristics align with research tools that perform anti-analysis to evade sandboxes, explaining MITRE T1055 injection and direct IP contact. Tier-1 engines flag it as riskware or generic trojan, but lack family agreement and are outweighed by clean sandbox behavior and absence of malicious children/hosts. No signing or prevalence history, but no adversarial flags or external intel hits contradict the safe research tool shape. We lean safe per established patterns for such unsigned tools.
Each signal cites a concrete token from the evidence the arbiter saw — engine name, MITRE technique, signer string, or an exact count.
Fortinet (tier1): Riskware/4N4LDetector
Panda (tier2): PUP/Hacktool (labelFlags.hacktool=true)
triggeredHeuristics['security_tool_classifier']: fired=true, evidence['dominantLabels=Riskware/4N4LDetector|PUP/Hacktool']
behaviour.processes: rundll32.exe loading capstone.dll + Qt5Core.dll
file.tags: ['detect-debug-environment']
- Research tool heuristics fired
- Capstone.dll + Qt libs (legit for analysis tools)
- No malicious sandbox verdict
- No bad dropped children or hosts
- Unsigned executable
- Rare new file (1 submission)
- Process injection (T1055)
- Direct IP contact (no DNS)
This is a safe research tool despite heuristic flags. Extract and run in a VM if testing anti-analysis features, but no deletion needed.
What this file did when executed
This file was detonated in 1 sandbox and its runtime behaviour was observed.
Adversary techniques mapped to the MITRE ATT&CK framework.
- 162.159.36.2
- C:\Users\<USER>\AppData\Local\Temp\Add4n4lMenu.reg
- C:\Users\<USER>\AppData\Local\Temp\~DF0DC143667F9DB458.TMP
- C:\Users\<USER>\AppData\Local\Temp\config\m
- C:\Users\<USER>\AppData\Local\Temp\config\vtapi
- C:\Users\<USER>\AppData\Local\Temp\config\filelen
- C:\ProgramData\Microsoft\Windows\WER\Temp\WER5704.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WER5A9F.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WER5BAA.tmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WER5704.tmp.dmp
- C:\ProgramData\Microsoft\Windows\WER\Temp\WER5A9F.tmp.WERInternalMetadata.xml
- Local\WERReportingForProcess5876
- Global\AmiProviderMutex_InventoryApplicationFile
- Global\117af6e2-fd96-4985-90b6-95abd3871b61
- Local\WERReportingForProcess6844
- Global\dcb1141b-e7ce-4adc-a837-50332c304b4f
Files this sample writes at runtime
This file drops 10 children at runtime. None are currently flagged malicious in our cache.
- 684ea699ebaf3c6898eb…94b722Never scannednever seen before
- 87b0725412223a031106…147e02Never scannednever seen before
- 1a58668650dc0c4d2b2f…b9bdfdNever scannednever seen before
- 00fc609a673f9fc40bca…d86f21Never scannednever seen before
- 50e9f2ddfcaaba8bcaeb…aaf4aaNever scannednever seen before
- 2e3467ed57feac1aa468…e17008Never scannednever seen before
- 9120049e1b26d8fa9287…05b263Never scannednever seen before
- 151ee604e3751a4a3613…68266bNever scannednever seen before
- 9c40eb51646a75e8b5c8…4de0b7Never scannednever seen before
- 89f9cec60dd3a6dcfb7a…54584eNever scannednever seen before
YARA + heuristic rules that fired
A researcher-curated or high-severity heuristic rule matched this sample. These rules target specific malware families and are near-definitive.
MITRE T1055 (Process Injection) observed — CreateRemoteThread / APC / reflective-DLL injection. The payload is being smuggled into a legitimate process to bypass AV hooks.
Evidence"C:\Windows\system32\rundll32.exe" "C:\Users\<USER>\AppData\Local\Temp\Qt5Core.dll",#1Sample contacted 1 external IP address(es) and zero domains. Benign software virtually always uses DNS; no-DNS direct-IP C2 is a strong malware indicator because it bypasses reputation systems and dodges domain-based blocklists.
Evidence162.159.36.2
10 detections across 76 engines
How often this file shows up in the wild
Barely seen in the wild and first surfaced recently. This is the footprint of targeted malware the AV industry hasn't signatured yet — extra scrutiny is warranted.
Forensic fingerprint
- File name
- 4n4lDetectorV3.5.zip
- Size
- 6.18 MB
- MIME type
- application/x-zip-compressed
- Detected type
- ZIP
- SHA-256
- b311912a1d481a701085c52f06309f3fadf5961c39c1246f5b19ec3f3c70b2ee
- MD5
- e8cdc9dde0fb3970dbeafa5726d6dd65
- SHA-1
- f39e297600617799c8fcf8a56cc1ced6e742e08c
- First seen (VT)
- 4/23/2026, 3:21:44 PM
- Last analysis (VT)
- 4/23/2026, 3:21:44 PM
- First scan (MalwareTips)
- 4/23/2026, 3:22:51 PM
- Last scan (MalwareTips)
- 4/24/2026, 1:15:15 AM
Reviews & malware reports(0)
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