Office (OLE) / .DOC malware analysis — malicious · 276e5e230766222e

MALICIOUS

Office (OLE) / .DOC

229.2 KB Created: 2018-06-29 18:44:00 Authoring application: Microsoft Office Word

MD5: 9c1a322c4da03ad627de7f4e2cdb3c9a SHA-1: 455e2da5bdcea7ade9800f550a437aa703fa089c SHA-256: 276e5e230766222ed208b1d4d1bd994acc2e763ca71c6d28f41a17988375d099

260 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious OLE document containing VBA macros. The AutoOpen macro is present and triggers a Shell() call, indicating it's designed to execute arbitrary commands. The presence of 'macros.bas' and the ClamAV detection further support its malicious nature. The primary attack vector appears to be macro execution leading to arbitrary code execution.

Heuristics 7

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Malware.Generic-7143529-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-7143529-0
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` `cce18e8a56fc1b343ea6d3916b7fea3b94301e3cb5aa12a3003a24058508078c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	13508 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 123 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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