Office (OLE) / .DOC malware analysis — malicious · ee66b70eaa336501

MALICIOUS

Office (OLE) / .DOC

94.8 KB Created: 2018-06-13 14:34:00 Authoring application: Microsoft Office Word

MD5: a90c0acb6b9bc7056a1480ee299d93d5 SHA-1: 379117ddcc214899c707c848f29afca339bc0326 SHA-256: ee66b70eaa336501e7bbe2bf6eadbd124998cd8bc4b762ba52ed99c0738588e5

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 critical OLE_VBA_SHELL heuristic indicates the use of the Shell() function, and the OLE_VBA_PCODE_AUTOEXEC_EXEC heuristic confirms that the Document_open macro is configured to execute code. This suggests the document is designed to download and execute a second-stage payload. The ClamAV detection further supports its malicious nature.

Heuristics 7

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Malware.Valyria-6874677-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Valyria-6874677-0
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
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` `2b9454bd35ea4b7fe0ac70476726f216e2e9dbb3680d0c8e94b1275134d10174`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	11269 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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