Office (OLE) / .DOC malware analysis — malicious · 3cac6c728bcd37d6

MALICIOUS

Office (OLE) / .DOC

329.0 KB Created: 2020-09-17 06:28:00 Authoring application: Microsoft Office Word

MD5: 88825b57c917fe19a6fd917c356716be SHA-1: 637e93a02e3845bd299cc978d2d4274c24a73bcd SHA-256: 3cac6c728bcd37d6b403146bbee3c1f039cf166e3b832df9021bf03beeb72227

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a malicious Office document containing a VBA macro. The macro is configured to auto-execute upon opening and uses Shell execution to run a command. This command likely downloads and executes a second-stage payload from the URL http://165.22.91.233/doc/newone. The presence of the Document_Open macro and the direct execution of a command strongly indicate a downloader or droppper functionality.

Heuristics 6

Document_Open macro high OLE_VBA_DOCOPEN

Document_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.
Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND

Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
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://165.22.91.233/doc/newone
- http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `56aea84e5aba0c1b25d015c5067174f0a4cd401e611e08489dfc67451a632dba`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	906 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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