Doc.Trojan.Maldade-10036492-0 — Office (OOXML) malware analysis

Static analysis result for SHA-256 5b1bd8c24d4b2ecb…

MALICIOUS

Office (OOXML)

18.3 KB Created: 2021-09-07 06:26:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2021-09-17
MD5: 6f18ebb77b4a17173fede41fbb840629 SHA-1: 23ffa5f05fae860466070282fd40ef9f2167cdf0 SHA-256: 5b1bd8c24d4b2ecbc18938b99376c2cd7638e673ec880f90ceda21053e60062b
142 Risk Score

Malware Insights

Doc.Trojan.Maldade-10036492-0 · confidence 85%

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Maldade-10036492-0. Static analysis revealed the presence of VBA macros within the OOXML document. The extracted VBA macro code, 'Sub Hello() Dim X X=MsgBox("Hello VBS")', while simple, indicates the potential for macro-based execution. This suggests the document is designed to lure the user into enabling macros, which would then execute further malicious code.

Heuristics 3

  • ClamAV: Doc.Trojan.Maldade-10036492-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Maldade-10036492-0
  • VBA project inside OOXML medium OOXML_VBA
    Document contains a VBA project — VBA macros present
  • 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.microsoft.com/office/word/2010/wordprocessingCanvas In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartexIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/inkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2017/model3dIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordml/cexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2016/wordml/cidIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2020/wordml/sdtdatahashIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 86 bytes
SHA-256: d11911c24d0c213dd9c64275b5b61188b4979e1a59b59fe40146f572ab21d487
Preview script
First 1,000 lines of the extracted script
Sub Hello()
Dim X
X=MsgBox("Hello VBS") 
Sub Hello()
Dim X
X=MsgBox("Hello VBS")
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 22016 bytes
SHA-256: de4c25e16a9462c52742b3ec9cc98608f7ae5aa26ee0c617e589871ffa345e97
Detection
ClamAV: Doc.Trojan.Maldade-10036492-0
Obfuscation or payload: unlikely

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