Office (OLE) / .DOC malware analysis — malicious · 602562ea77781833

MALICIOUS

Office (OLE) / .DOC

175.6 KB Created: 2020-07-27 11:49:00 Authoring application: Microsoft Office Word

MD5: 05043d8c046bc6c8ab9460c5b97b4eba SHA-1: 3df235487a38233932e9b6832425802b5bf7fcc4 SHA-256: 602562ea777818334e4e8590d88e9db293abb13ede416ed5d97155bb91ce37ab

262 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious OLE document containing VBA macros. The critical heuristic 'OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER' indicates the use of a hidden UserForm to execute code, likely a command stager. This suggests the document's primary purpose is to download and execute a secondary payload. The presence of the 'Document_Open' macro further supports this, as it automatically runs code upon opening the document.

Heuristics 7

VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER

VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
ClamAV: Doc.Malware.Logan-9206204-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Logan-9206204-0
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` `b3b9e04ef3659b60baa9fe0bae8221e5fd43499fd18d950d2b2518bdd43f7577`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3995 bytes

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