Office (OLE) / .DOC malware analysis — malicious · 9d35d0d394f6f6a4

MALICIOUS

Office (OLE) / .DOC

254.0 KB Created: 2019-09-19 08:31:00 Authoring application: Microsoft Office Word

MD5: c6a33f6982655ca0e315ae9f284a5368 SHA-1: 0c3ae059672a170c4fd994f96f8dd0709b6ffb3a SHA-256: 9d35d0d394f6f6a45b6e14fbfc06c870c6387d1340cf29ee4bbfe7876ae30e3a

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is a malicious Microsoft Word document containing VBA macros. The presence of an AutoOpen macro and CreateObject calls, combined with VBA p-code auto-execution, strongly indicates that the macros are designed to download and execute a second-stage payload. The ClamAV detection and heuristic firings confirm its malicious nature as a downloader.

Heuristics 7

ClamAV: Doc.Downloader.Generic-7171058-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-7171058-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen 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` `c07400a04610e54cdf7efac35fc8f7d972d0fc8e046c7ec80f63fecc807ca28d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	24917 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 24 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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