Office (OLE) / .DOC malware analysis — malicious · b5a8deb1d7564988

MALICIOUS

Office (OLE) / .DOC

84.6 KB Created: 2020-12-30 06:48:00 Authoring application: Microsoft Office Word

MD5: 7f50410b98ce5a1f6a53f6683b802edb SHA-1: 66d55ed1ffaf00dabd4d90b2adcb2f77ec3ece93 SHA-256: b5a8deb1d7564988ef198f2f77e5ca7e463404cd254734055775c1438de7182d

180 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 'Document_Open' macro, triggered automatically upon opening, uses 'CreateObject' to execute code. This indicates the macro's intent is to download and execute a second-stage payload. No specific family could be identified, and no external IOCs were extracted.

Heuristics 6

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 — 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` `f392ec7de4bc91e9168573ed3554ded1ffa8839807d0d22211a4c7f8e84a6f24`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6590 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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