MALICIOUS — 855221a08bf7d0e5a235ef097c2b82daf978ebdeec7f99b6ceeb1c175471f23f

MALICIOUS — 855221a08bf7d0e5a235ef097c2b82daf978ebdeec7f99b6ceeb1c175471f23f is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (95/100), attributed to the Kolab family. 4 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: 855221a08bf7d0e5a235ef097c2b82daf978ebdeec7f99b6ceeb1c175471f23f
• SHA-1: 857e6f51c9df6dbf358f6b0a76d3be8e728a3aef
• MD5: faf1dee8bfd638b73f65c21a123f6a1a
• imphash: 9e747ee51ad11df670acefcead43be30
• ssdeep: 24576:egNjc+lPYl1WvWL0vbKPjO7KX53RTh0tFda3:eg9lA0vbKrOO53RTqti
• TLSH: T12553AD5916223281D2F3D9646E106E6C502EB4AA227E385F5FC3D51FA2F7E7350342A3
• Submitted as: 855221a08bf7d0e5a235ef097c2b82daf978ebdeec7f99b6ceeb1c175471f23f
• File type: pe · Size: 1080859 bytes
• Verdict: malicious (95/100) · Family: Kolab

Detections (4 of 55 engines)

• ClamAV (daily): Win.Malware.Kolab-9885903-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• YARA: Yara-Rules community: YR_AntiDebug_Checks
• LIEF (executable format parser): lief:invalid-authenticode

MITRE ATT&CK

• T1071.001

Why this verdict

The malicious score of 95/100 is the fusion of 5 weighted signals:

• ClamAV (daily) flagged Win.Malware.Kolab-9885903-0 (rule Win.Malware.Kolab-9885903-0) - 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
• YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70
• LIEF (executable format parser) flagged lief:invalid-authenticode (rule lief:invalid-authenticode) - engine signal, weight 0.35, confidence 0.70
• communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60

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://crl.thawte.com/ThawteTimestampingCA.crl0
• http://ts-aia.ws.symantec.com/tss-ca-g2.cer0
• http://ts-crl.ws.symantec.com/tss-ca-g2.crl0
• https://www.verisign.com/rpa
• http://csc3-2010-crl.verisign.com/CSC3-2010.crl0D
• https://www.verisign.com/rpa0
• http://csc3-2010-aia.verisign.com/CSC3-2010.cer0
• https://www.verisign.com/cps0*
• http://logo.verisign.com/vslogo.gif04
• http://crl.verisign.com/pca3-g5.crl04
• 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://office.microsoft.com
• http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
• http://www.microsoft.com/pki/certs/MicTimStaPCA_2010-07-01.crt0
• http://schemas.microsoft.com/SMI/2005/WindowsSettings
• http://www.digicert.com/ssl-cps-repository.htm0
• http://crl3.digicert.com/assured-cs-2011a.crl03
• http://crl4.digicert.com/assured-cs-2011a.crl0
• http://cacerts.digicert.com/DigiCertAssuredIDCodeSigningCA-1.crt0
• https://hl2rcv.adobe.com/headlights
• http://crl.verisign.com/tss-ca.crl0
• http://crl.verisign.com/pca3.crl0
• https://www.verisign.com/cps0

Embedded domains

• jnlp.tk
• mozilla.org
• crl.thawte.com
• ts-aia.ws.symantec.com
• ts-crl.ws.symantec.com
• www.verisign.com
• csc3-2010-crl.verisign.com
• csc3-2010-aia.verisign.com
• logo.verisign.com
• crl.verisign.com
• crl.microsoft.com
• www.microsoft.com
• office.microsoft.com
• schemas.microsoft.com
• crash-reports.mozilla.com
• www.digicert.com
• cacerts.digicert.com
• crl3.digicert.com
• crl4.digicert.com
• hl2rcv.adobe.com

File paths

• C:\re\jdk7u45\229\build\windows-amd64\tmp\jp2launcher\obj64\jp2launcher.pdb
• F:\Office\Target\x64\ship\postc2r\x-none\msoxmled.pdb
• C:\re\jdk7u45\229\build\windows-amd64\tmp\sun\launcher\pack200\obj64\pack200.pdb
• c:\builds\moz2_slave\rel-m-rel-w32_bld-000000000000\build\obj-firefox\browser\app\firefox.pdb
• X:\:`:d:h:l:p:t:x:
• X:\:t:
• T:\:
• F:\Office\Target\x86\ship\postc2r\x-none\wordconv.pdb

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report