Office (OLE) / .DOC malware analysis — malicious · ea3d311668298936

MALICIOUS

Office (OLE) / .DOC

89.5 KB Created: 2018-08-03 11:31:00 Authoring application: Microsoft Office Word

MD5: 9457c6761a46f54a9ec1b9af056b1f81 SHA-1: 6a105b2fc464e3a1ebaf454e47486175d8d3fcfa SHA-256: ea3d311668298936d62e05c3ff1230cc26499b145d8652240787107bd3e1a329

200 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature Doc.Malware.Valyria-6703371-0. Static analysis detected VBA macros, specifically an AutoOpen macro that executes shell commands. This indicates the document is designed to run malicious code upon opening, likely to download and execute a second-stage payload.

Heuristics 6

ClamAV: Doc.Malware.Valyria-6703371-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Valyria-6703371-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
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` `f829bb414fa35f40545b1a9f66a4503cd7b4ca25a35fdff1d5af4a012819acca`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6295 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 14 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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