Office (OLE) / .DOC malware analysis — malicious · efa78d9ed272969f

MALICIOUS

Office (OLE) / .DOC

28.0 KB Created: 2021-06-15 13:23:00 Authoring application: Microsoft Office Word

MD5: 09727593446a5003a833fb6ad80fff68 SHA-1: ec07a60874477f99a7ca4c9e704fbb9a82e72aa0 SHA-256: efa78d9ed272969fb2ac62b355f0b9532d20d26ed47d87e3c2d5f1e4b67bbad3

222 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The presence of CreateObject calls and references to Windows Script Host further suggest that the macros are designed to execute code, likely to download and run a secondary payload. No document body text was available for analysis, so the rationale is based on the macro behavior.

Heuristics 7

Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject 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 — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.

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` `604b39ee4450c60449bccbbd645f868dbd77aaf68730a375688918ffe14cf990`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	742 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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