Office (OLE) / .DOCX malware analysis — malicious · c77bdf30a9a94eaf

MALICIOUS

Office (OLE) / .DOCX

258.3 KB Created: 2020-10-29 09:30:00 Authoring application: Microsoft Office Word

MD5: a3dca98b2f46da9dc352491b80267df7 SHA-1: 22fcbe99d2949774d624a11b1c2ed8512a309cb9 SHA-256: c77bdf30a9a94eafd3718a954bd79a8e9ad3b32761d6c45ae1b79245df7599bf

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is a Microsoft Office document containing VBA macros, specifically triggering a Document_Open auto-execution macro. This macro utilizes CreateObject, a common technique for executing arbitrary code. The ClamAV detection 'Doc.Downloader.Generic-9785156-0' strongly suggests the macro's purpose is to download and execute a second-stage payload. No specific family could be identified, but the behavior is consistent with a downloader. The embedded URL was confirmed benign and is likely a schema reference.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
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` `2c8aded1cc33908777d3554a19067d8f93ed6d8269cc13dcdcff33eca45ebd5f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18919 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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