Office (OLE) / .DOC malware analysis — malicious · eebf28c47b1fda3f

MALICIOUS

Office (OLE) / .DOC

120.1 KB Created: 2018-12-26 16:14:00 Authoring application: Microsoft Office Word

MD5: e3289ae9fd9b922b8381b704fa22c81a SHA-1: aed6e6e25a6a364456dc28e60a57a51adaec2b79 SHA-256: eebf28c47b1fda3f32cf8e28490d5b36ddbb01aeaa5ee119b8a6105d3079e061

260 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, specifically an AutoOpen macro that utilizes the Shell() function. This indicates the document is designed to execute arbitrary commands upon opening. The presence of the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic further supports that the macro is configured for automatic execution via the Shell() function. While no specific URLs or payloads were extracted, the primary intent appears to be the execution of a second-stage payload.

Heuristics 7

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Malware.Generic-6796551-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-6796551-0
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/officeDocument/2006/bibliography
- http://schemas.openxmlformats.org/officeDocument/2006/customXml
- http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `e98f33bdcef57199e9cd8a14c19844cbce61e0e2ebabb44344e2698a5731151d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4544 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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