Office (OLE) / .DOCX malware analysis — malicious · 04d66ed2d7e82444

MALICIOUS

Office (OLE) / .DOCX

168.0 KB Created: 2021-01-22 16:11:00 Authoring application: Microsoft Office Word

MD5: 8ac064db9bbb8e2c172c1e4b37bb4233 SHA-1: aa105736e997e95c30797789bc43f8036864b5b6 SHA-256: 04d66ed2d7e82444ce4d2b8227f03b6612a55e843e3ef434c01c93b65f10ff04

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1041 Exfiltration Over C2 Channel

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro is present and configured to execute, indicating an attempt to run malicious code upon opening. The VBA code is heavily obfuscated but the presence of 'CreateObject' and the ClamAV detection 'Doc.Malware.Emodldr-10033990-0' strongly suggest it acts as a downloader for a second-stage payload. The obfuscated nature of the script prevents a more detailed analysis of its specific actions.

Heuristics 6

ClamAV: Doc.Malware.Emodldr-10033990-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emodldr-10033990-0
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` `5ed4257a756cf59fd0bdd4996a568d11e210a8cb1fd2c78a16a7c0bd2a73f2f9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16688 bytes

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