Office (OLE) / .DOC malware analysis — malicious · ef9f3640a11c9355

MALICIOUS

Office (OLE) / .DOC

29.5 KB Created: 2021-06-14 21:39:00 Authoring application: Microsoft Office Word

MD5: f603ab897766610aa9609935e5a65359 SHA-1: 9800aef87722cb04b166a74ebf66f84ddfb44aa7 SHA-256: ef9f3640a11c9355fca84a3ded21a4e60b0565a2ccbd70d24bb4204a4c85651f

222 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious OLE document containing VBA macros. The 'Document_Open' macro is present and uses 'CreateObject' to likely execute Windows Script Host, indicating an attempt to download and run a second-stage payload. The specific URL found is not directly indicative of a payload but is part of the document's structure.

Heuristics 7

Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
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 — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.

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` `464c6575121dff56b550414871e244629771f9a76a67b3b0ab2fea78a68da471`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	832 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 9 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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