Office (OLE) / .DOCX malware analysis — malicious · 0543a908de650442

MALICIOUS

Office (OLE) / .DOCX

175.0 KB Created: 2020-09-28 21:56:00 Authoring application: Microsoft Office Word

MD5: d03e83e6ed36ae9f64d23bfb5fb71334 SHA-1: 2bdcb7a6e81e3b19035a525d18720c64f522e0b8 SHA-256: 0543a908de650442eb28c0b24cca2680f9d81f997991401a6dfa4c00a5a0d27a

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1105 Ingress Tool Transfer

The sample contains VBA macros, including a Document_Open macro, which is a common technique for executing malicious code upon opening the document. The script uses CreateObject and appears to obfuscate strings, including a URL, which is then likely used to download and execute a second-stage payload. The presence of these elements strongly suggests a downloader or droppper malware.

Heuristics 6

ClamAV: Doc.Malware.Generic-9769001-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-9769001-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `fe19635e7383e285d173bce1f5bbd9867258f7974e3830e10aecb187a337391c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6691 bytes

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