Office (OLE) / .DOC malware analysis — malicious · e699620d331516b7

MALICIOUS

Office (OLE) / .DOC

314.6 KB Created: 2019-02-19 20:40:00 Authoring application: Microsoft Office Word

MD5: 40916450ddf0adf4fa98fd91bd23a26e SHA-1: 6b6542ba60b692d6a1364b3d54a1d6e39a4f4288 SHA-256: e699620d331516b7f74db80701de8bbfcff55f1ad20920310b972a7d99ff302d

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file contains VBA macros, specifically an AutoOpen macro, which is a common technique for executing malicious code upon opening a document. The presence of a GetObject call further indicates an attempt to execute code. ClamAV detection as 'Doc.Downloader.00536d-6863013-0' strongly suggests the file's purpose is to download and execute a secondary payload. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 7

ClamAV: Doc.Downloader.00536d-6863013-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.00536d-6863013-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
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` `c4e1294e4f41184a865f2b1d5c3648985bc64dd4d68439980177fc041ce70d71`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	55372 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 186 Chr/ChrW string-construction calls.

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