Office (OLE) / .DOC malware analysis — malicious · 41ae03bcd62f7aa8

MALICIOUS

Office (OLE) / .DOC

199.2 KB Created: 2020-09-21 06:43:00 Authoring application: Microsoft Office Word

MD5: a7a691b90d330d1d7fbf9c4c9491c1af SHA-1: 7edddf5bd4a2f188ef6cd21c29bd89235dc9e922 SHA-256: 41ae03bcd62f7aa837684a027d3efbfb1f93e9f466ea2fe0f1b4d1c88c29adde

280 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious OLE document containing VBA macros. The 'Document_Open' macro is present and configured to execute automatically, indicating an attempt to run code upon opening. Heuristics suggest the use of CreateObject and GetObject, common for downloading and executing payloads. The ClamAV detection 'Doc.Downloader.Generic-9764468-0' further supports this, classifying it as a downloader. The embedded URL, though benign, is noted.

Heuristics 8

ClamAV: Doc.Downloader.Generic-9764468-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764468-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `7169cbbf5de322d778ca9a77dc58bcf8bb22a6f6d4bfec64dbfa06bc63509b99`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19229 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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