Office (OLE) / .DOC malware analysis — malicious · 33ea23b098a70ac6

MALICIOUS

Office (OLE) / .DOC

172.4 KB Created: 2020-07-27 09:07:00 Authoring application: Microsoft Office Word

MD5: d23e2e120d5309825531faf2317d09b7 SHA-1: 9086162268b4a0132a86289b889fe2cf3f0b2415 SHA-256: 33ea23b098a70ac68f518e4d94eb3977c49a38107cd460a8d12bc77fd8c48bad

262 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of malicious intent. The 'CreateObject' call and the 'auto-exec' nature of the p-code suggest the macro is designed to execute arbitrary code, likely downloading a secondary payload. The ClamAV detection further supports its malicious classification.

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-9219452-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Logan-9219452-0
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` `c4a1b60f587f0cd10b55e32d571180aaadcb18ee2beb5cafcbdaa37ff5b93bd8`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4056 bytes

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