MALICIOUS — 91563a9f42306230ee5c401bf912f9a27f41dfdbcf5023b30329c54e8aa90f72

MALICIOUS — 91563a9f42306230ee5c401bf912f9a27f41dfdbcf5023b30329c54e8aa90f72 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (94/100), attributed to the Sivis family. 7 of 52 detection engines flagged it.

Identification

• SHA-256: 91563a9f42306230ee5c401bf912f9a27f41dfdbcf5023b30329c54e8aa90f72
• SHA-1: 52ce3bfa0becd47034aeffdb562403b7b1ee2484
• MD5: 3325786f0b3a4be7d9dde220be6cba2f
• imphash: b10d16eedb1085ef7262dfc4ab03be6f
• ssdeep: 1536:KEq3GcOIhafJ+FmR+rwFC4OSL5vy9bW+ib3hh4lwl8FhNGpWU:KEqRaB+F+yo+iH4FhNGpWU
• TLSH: T1AF395CDA2210F12FD4F29D5B044CDDBDC4C3A4E52974038A9285B3B980AC977A67FB85
• Submitted as: 91563a9f42306230ee5c401bf912f9a27f41dfdbcf5023b30329c54e8aa90f72
• File type: pe · Size: 90059 bytes
• Verdict: malicious (94/100) · Family: Sivis

Detections (7 of 52 engines)

• MalwareAnalyser heuristics (entropy/packer): UPX
• ClamAV (daily): Win.Malware.Sivis-9908038-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Detect It Easy (packer/type): DIE:UPX
• Microsoft Defender: Virus:Win32/Sivis.A
• Emsisoft (Emergency Kit): Win32.Sivis.A
• Kaspersky (KVRT): Virus.Win32.Agent.es

Why this verdict

The malicious score of 94/100 is the fusion of 5 weighted signals:

• ClamAV (daily) flagged Win.Malware.Sivis-9908038-0 (rule Win.Malware.Sivis-9908038-0) - engine signal, weight 0.90, confidence 0.95
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70
• Detect It Easy (packer/type) flagged DIE:UPX (rule DIE:UPX) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: http://creativecommons.org/publicdomain/zero/1.0/, https://d.symcb.com/rpa0, http://s.symcb.com/universal-root.crl0 - static signal, weight 0.35, confidence 0.60
• Packing/obfuscation: UPX, high-entropy-sections:UPX1 - static signal, weight 0.25, confidence 0.55

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://creativecommons.org/publicdomain/zero/1.0/
• https://www.digicert.com/CPS0
• http://cacerts.digicert.com/DigiCertEVCodeSigningCA-SHA2.crt0
• http://cacerts.digicert.com/DigiCertHighAssuranceEVRootCA.crt0
• http://crl3.digicert.com/DigiCertHighAssuranceEVRootCA.crl0@
• http://crl4.digicert.com/DigiCertHighAssuranceEVRootCA.crl0
• http://www.digicert.com/ssl-cps-repository.htm0
• https://d.symcb.com/rpa0
• http://s.symcb.com/universal-root.crl0
• https://d.symcb.com/rpa0@
• http://ts-crl.ws.symantec.com/sha256-tss-ca.crl0
• http://ts-aia.ws.symantec.com/sha256-tss-ca.cer0

Embedded domains

• creativecommons.org
• geocities.com
• crl3.digicert.com
• crl4.digicert.com
• www.digicert.com
• cacerts.digicert.com
• d.symcb.com
• s.symcb.com
• ts-crl.ws.symantec.com
• ts-aia.ws.symantec.com

File paths

• X:\windows\system32\sysreset.exe
• C:\Windows.old\Windows\containers\serviced\WindowsDefenderApplicationGuard.wim]
• C:\Windows\containers\serviced\WindowsDefenderApplicationGuard.wim]
• C:\Windows.old\Windows\WinSxS\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.17134.1120_none_c3e
• C:\Windows.old\Windows\WinSxS\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.17134.1_none_eedfed
• X:\SysResetTrace-Tel-Merge.etl,
• C:\$WINDOWS.~BT\Sources\Panther\SysResetTrace-Tel-Merge.etl)

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report