Office (OLE) malware analysis — malicious · 8644a61b684f5c66

MALICIOUS

Office (OLE)

102.0 KB Created: 2003-04-01 14:25:00 Authoring application: Microsoft Word 8.0

MD5: a69b96a47832403fe6e5a4d66739778f SHA-1: b32769e7e6991aea948cb279728a275cc2a21ae6 SHA-256: 8644a61b684f5c662ee0e912f8b7edd45b597ffe67492d785c5d48e351e4cc27

200 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample contains VBA macros, including AutoOpen and AutoClose, which are commonly used to execute malicious code upon opening or closing a document. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document attempts to trick the user into executing commands via the clipboard. The embedded ClamAV detection 'Win.Trojan.C-286' suggests a known trojan. The VBA code includes functions to disable virus protection and copy other macros, indicating a downloader or dropper functionality.

Heuristics 5

ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close macro
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `2cf6d4c67147d9ce17c38ba2c84cd001e0dd47e81de2c80e5631df71b5201939`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4500 bytes
Detection ClamAV: Win.Trojan.C-286 Obfuscation or payload: unlikely

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