Office (OLE) / .DOC malware analysis — malicious · 42799f210ad55072

MALICIOUS

Office (OLE) / .DOC

38.0 KB Created: 2020-05-15 00:06:00 Authoring application: Microsoft Office Word

MD5: b3a6b71f6487129f841174374805e5f5 SHA-1: 96187d7e740824bc209d97563821ed8821eb8265 SHA-256: 42799f210ad55072ce21578efc4c8d58dc7083ae275de1c3ba11eb835adcd9e4

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1218.005 System Binary Proxy Execution: Mshta

The sample is a malicious OLE document containing VBA macros. Heuristics indicate the use of 'certutil' for downloading and decoding, and the presence of a 'macros.bas' file suggests a dropper functionality. The VBA macros likely execute a second-stage payload, as indicated by the 'CreateObject' and 'certutil' firings.

Heuristics 7

ClamAV: Doc.Dropper.Agent-9752075-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Agent-9752075-0
Reference to certutil (download/decode) high SC_STR_CERTUTIL

Reference to certutil (download/decode)
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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` `363c02b05386212cd5d7fafa4ad352a44999ab068e5be2c60e461314bd4d6604`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1524 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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