Office (OLE) / .DOC malware analysis — malicious · c0077d90db8a89a3

MALICIOUS

Office (OLE) / .DOC

154.1 KB Created: 2020-09-14 17:52:00 Authoring application: Microsoft Office Word

MD5: 4cbfe29316bc3d4253a99e5d4d797912 SHA-1: 4e6588c2a2a370d15b00d8450ec30db53be7964b SHA-256: c0077d90db8a89a3630e6a1aa121e407e4fee3464f58fc11c47afd7008e01117

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious DOC file containing VBA macros. The 'Document_Open' macro is configured to execute automatically, utilizing 'CreateObject' to likely download and execute a second-stage payload. The presence of VBA p-code auto-execution with specific tokens further confirms the malicious intent. While the exact payload URL is not directly visible in the provided snippets, the overall pattern indicates a macro-based downloader.

Heuristics 7

ClamAV: Doc.Malware.Generic-9760287-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-9760287-0
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.
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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `1c1ac6d8019d3317e1fd9360b916f40afe347161c1d653ef40242d0284d5107c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18510 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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