Office (OLE) / .DOCX malware analysis — malicious · ada659ce4b1ad92d

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 5d585fc2a6fedf195118f60453e21d37 SHA-1: 64f3e6803dcac67df072d3b97d6226dd26739a2e SHA-256: ada659ce4b1ad92d31ab929e58b311b622eae5d91ae6f1073ca20bac351e42f4

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a DOCX document containing VBA macros, specifically an auto-executing 'Document_Open' macro. This macro utilizes 'CreateObject' and is flagged for p-code auto-execution with execution tokens, indicating it's designed to run 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.

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.

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