Office (OLE) / .DOCX malware analysis — malicious · 40ed4ab05b6b307d

MALICIOUS

Office (OLE) / .DOCX

64.0 KB Created: 2017-07-26 06:54:00 Authoring application: Microsoft Office Word

MD5: 00f1945dee209d7b05c923016445ceba SHA-1: 4c6fa6ce8d4be0be29da9b6710aeee9f0bcffc12 SHA-256: 40ed4ab05b6b307d53f5b70e03854689b1e0fba830b6b8a4c972639ba8bdd78e

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 a Document_Open macro that utilizes the Shell() function. This indicates an attempt to execute arbitrary code, likely to download and run a secondary payload. The ClamAV detection and critical heuristic firings further support this assessment. The document body itself is a benign-looking notice regarding legal education, but the embedded macro is the primary threat.

Heuristics 6

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Macro.DeleteMacro-6096859-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Macro.DeleteMacro-6096859-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `1ead168903259235371aa0316d698fa36c1149e0c6d4d25214a6f3205ad6ebd7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3539 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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