Office (OLE) / .DOCX malware analysis — malicious · 46c5ff347ce2a204

MALICIOUS

Office (OLE) / .DOCX

154.8 KB Created: 2020-12-28 15:43:00 Authoring application: Microsoft Office Word

MD5: cb6f7cfcad5986b49f889fdaec413c9f SHA-1: 35ca7db49f88f0dc4b32cc40fce5529b1aef2774 SHA-256: 46c5ff347ce2a204376e25f5313cf19b464a5ff6a64e3dd7a2a97769d0288ab4

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The sample contains VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. This is a common technique for downloading and executing second-stage payloads. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' strongly suggests the document's purpose is to deceive the user into providing a password for an archive, a tactic often employed to evade initial security checks. The ClamAV detection further supports its malicious nature, identifying it as a downloader.

Heuristics 8

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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` `a004a96685dc375590aeec65acf06fce9e74ef2bbe0aa7a48bc315f9645e3700`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6009 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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