Office (OLE) / .DOC malware analysis — malicious · cdb6ec6335972ab4

MALICIOUS

Office (OLE) / .DOC

90.4 KB Created: 2018-08-08 14:42:00 Authoring application: Microsoft Office Word

MD5: 1f87058ceebceeefdc2838d347b89652 SHA-1: c4f0dab84e5ef143a50ce075b80408dd5d52a8af SHA-256: cdb6ec6335972ab4d50f718be9c0995bc5f0caeadebe3d04bd98143e547ad544

200 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious Office document containing VBA macros. The 'AutoOpen' macro is configured to execute a payload using the 'Shell' function, indicating it's designed to download and run a second-stage artifact. The ClamAV detection and heuristic firings strongly support this malicious intent. The document body is heavily corrupted and unreadable, providing no additional context.

Heuristics 6

ClamAV: Doc.Malware.Valyria-6710189-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Valyria-6710189-0
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` `15580f9d5bcef7333615dfc262322696e8c9af7f07c2728a6044cf4149e01e37`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5267 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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