CLEAN — ucrtbase.dll

CLEAN — ucrtbase.dll is a pe sample analyzed by MalwareAnalyzer by Cyble with a clean verdict (25/100). 2 of 55 detection engines flagged it.

Identification

• SHA-256: 4c5b8e529854cedfa8f46cd6906952400cdbbf25efc4cf37dda2c42d8e96ddcb
• SHA-1: 1062942b1bdfc8d7c8a941c152df69216010d780
• MD5: ed82e9c6c4f7a475d7fd6ebabf3fab2a
• imphash: 57abd1fde351971a01e912069e11b44c
• ssdeep: 24576:WhEbImsFPf/JtGlA3wubyZ9dgruOqy38V89DamxvSZX0ypkXvE:WhgImsFPfRklAVyBgr599hX8
• TLSH: T1A6527C1642173261F07AB594ACE04EECE862F57CB075490DA707EC9EA0CAD73A3F1295
• Submitted as: ucrtbase.dll
• File type: pe · Size: 997056 bytes
• Verdict: clean (25/100)

Detections (2 of 55 engines)

• YARA: Yara-Rules community: YR_AntiDebug_Checks
• Microsoft Defender: flagged

Why this verdict

The clean score of 25/100 is the fusion of 1 weighted signal:

• YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

Embedded URLs

• http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0
• http://www.microsoft.com/pki/certs/MicCodSigPCA_08-31-2010.crt0
• http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0T
• http://www.microsoft.com/windows0
• http://www.microsoft.com/pki/certs/MicCodSigPCA_2010-07-06.crt0
• http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
• http://www.microsoft.com/pki/certs/MicTimStaPCA_2010-07-01.crt0

Embedded domains

• crl.microsoft.com
• www.microsoft.com

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report