Office (OLE) / .DOC malware analysis — malicious · b017446fa6fbbff8

MALICIOUS

Office (OLE) / .DOC

105.5 KB Created: 2001-01-03 18:16:00 Authoring application: Microsoft Office Word

MD5: e76fe2cc2d726e4e3208c20d0a1e439f SHA-1: f5cf64143251ef70fc0bceff4b9e0b1c9345b95e SHA-256: b017446fa6fbbff868772125365042c71f3a60d38161fc26abfb6a3b462a2996

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file contains VBA macros, specifically a Document_Open macro that uses CreateObject, indicating an attempt to execute code automatically. The presence of VBA Chr string obfuscation and auto-execution with execution terms further supports malicious intent. While the document body discusses hydrological models, the macro execution is the primary indicator of compromise. No specific URLs or file paths were extracted, limiting further analysis of the payload.

Heuristics 5

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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `1b02f74afb86760a39bdbb6945f7f55406908ee3dde4d7a1d85d536ff0871565`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	41366 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 26 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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