Office (OLE) malware analysis — malicious · f3dee0219902b283

MALICIOUS

Office (OLE)

155.8 KB Created: 2020-09-15 06:22:00 Authoring application: Microsoft Office Word

MD5: 6de0e5071b328a64f9dc619d85aa768b SHA-1: de70c31104257e1dac46dea1d6a28096f5879dd8 SHA-256: f3dee0219902b283f202b34a6a42746eb0cd236914812d446d388ec873e9ac65

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains a critical ClamAV detection and high-severity heuristics indicating the presence of VBA macros. Specifically, the 'Document_Open' macro and 'CreateObject' calls suggest an auto-execution mechanism. The VBA p-code auto-execution with execution tokens further confirms this. The presence of these elements strongly indicates that the macro is designed to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Ewlu-9762385-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Ewlu-9762385-0
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` `0812334775ad413ac951a2705cc110a8397311927e3a75099eb95d4d59503241`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	23048 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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