Office (OLE) / .DOC malware analysis — malicious · 7ce5a9235acf3eb2

MALICIOUS

Office (OLE) / .DOC

63.0 KB Created: 2022-10-11 07:40:00 Authoring application: Microsoft Office Word First seen: 2022-10-12

MD5: 5d3e6d263bd94b901830e792fd237693 SHA-1: de135c0e1255f334513aff51515de780d8ac8099 SHA-256: 7ce5a9235acf3eb2001197190b598be8fa49e8f0e2ef9d0ae0a1c2c3095cd7b7

262 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, specifically triggering Auto_Open and AutoOpen, which are designed to execute automatically when the document is opened. Critical heuristics indicate the use of Shell() calls within the VBA code, suggesting the execution of arbitrary commands. The ClamAV detection of 'Xls.Malware.Valyria-10029786-0' further confirms its malicious nature, likely involving the download and execution of a secondary payload.

Heuristics 7

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Xls.Malware.Valyria-10029786-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Valyria-10029786-0
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
Auto_Open macro high OLE_VBA_AUTO

Auto_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.
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` `7380433f063baf511f7cc6ec5743e95575845480477582c8f68f61daf1e4b01f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16695 bytes

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