Office (OLE) / .DOC malware analysis — malicious · 9849d748d6b7b10d

MALICIOUS

Office (OLE) / .DOC

163.8 KB Created: 2020-09-17 22:39:00 Authoring application: Microsoft Office Word

MD5: 5a3fb2e47151c22381bc61fe6e123717 SHA-1: 4f5a280833e150ab809ea78f382afea203a76942 SHA-256: 9849d748d6b7b10da3eacb62fa962475311b6073819d42efe25b5557eaa32329

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious Microsoft Word document containing a large VBA macro. The 'Document_Open' macro is automatically executed upon opening the document, and it utilizes 'CreateObject' to likely download and execute a second-stage payload. The presence of the 'macros.bas' file further indicates macro-based execution. The ClamAV detection 'Doc.Downloader.Generic-9763145-0' strongly suggests a downloader functionality.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763145-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763145-0
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` `1e2a7d06314ac88dde2877d244d6ca5e91533ec592ad1318aa4aab91c451ca9e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	21979 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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