Office (OLE) / .DOCX malware analysis — malicious · 74c02791bd5b5992

MALICIOUS

Office (OLE) / .DOCX

156.0 KB Created: 2020-10-19 16:24:00 Authoring application: Microsoft Office Word

MD5: 36287d4c4b77b87b2c994a917ad1fe5d SHA-1: 78010ff8f0ee2035b594edcdd1e06d14f6c9ed9b SHA-256: 74c02791bd5b59926d6eff9113abfaf907a47501118cfd2bcadafe6bd5743395

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter T1203 Exploitation for Client Execution

The sample is a malicious Office document containing VBA macros. The critical ClamAV heuristic and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC indicate that the Document_Open macro is designed to execute obfuscated VBA code. This code uses CreateObject, a common technique for downloading and executing further payloads. The presence of macros and the likely execution of a second-stage payload suggest a spearphishing attachment delivery method.

Heuristics 6

ClamAV: Doc.Malware.Sagent-9780539-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Sagent-9780539-0
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.
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` `d0a6497cb07b10e3700967f3bfacfd7398ab919e1393e4e1ddda61d0b30c3f61`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15475 bytes

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