Office (OLE) / .XLS malware analysis — malicious · 9de1f44fb966c4d5

MALICIOUS

Office (OLE) / .XLS

85.0 KB Created: 2020-04-26 22:15:56 Authoring application: Microsoft Excel

MD5: 13ab9c144f081b12d436807c4695a5bb SHA-1: b897a08cfd4e73cbcd24b7229afe6e63963fc1ba SHA-256: 9de1f44fb966c4d5a8877059a530b2dd4eb01228b0ea52a78ac43df28140315b

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The presence of VBA macros, specifically a Workbook_Open auto-execution routine, indicates malicious intent. The heuristic 'OLE_VBA_PCODE_AUTOEXEC_EXEC' confirms that the Workbook_Open macro uses CreateObject to execute code. ClamAV detection as 'Doc.Dropper.Agent-7698492-0' further supports its malicious nature, likely acting as a dropper for further malicious activity.

Heuristics 6

ClamAV: Doc.Dropper.Agent-7698492-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Agent-7698492-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `49bfada005512385fd79fd164c4853f26c0598cfcea555ad816f94368fcbefc8`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3943 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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