Office (OLE) / .DOCX malware analysis — malicious · a2d525c9bd812816

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 75f209811b122f593ae660377e5e165a SHA-1: 9dc0eadfa842565905ca1670a665ea13ae2f49bd SHA-256: a2d525c9bd8128160c64990fa84afc4da2bea8a72cfb4ca42f14cddac1343df2

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is a malicious Office document containing VBA macros, as indicated by multiple high and critical heuristic firings including OLE_VBA_MACROS, OLE_VBA_DOCOPEN, and CLAMAV_DETECTION. The presence of a Document_Open macro and CreateObject calls suggests the macro is designed to execute automatically upon opening the document. The extracted artifact 'macros.bas' is the VBA macro source. The primary function appears to be downloading and executing a second-stage payload, a common technique for malware delivery.

Heuristics 7

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.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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