Office (OLE) / .XLS malware analysis — malicious · 7c3822b0015e740b

MALICIOUS

Office (OLE) / .XLS

172.0 KB Created: 2020-06-29 22:25:18 Authoring application: Microsoft Excel

MD5: 14b2d3f08ad6543c060d19748f526167 SHA-1: b10646324228a4b21154ef6e7d9d5469a61364e7 SHA-256: 7c3822b0015e740bb3e9a1c4d0d5da368cae8117a820152377d41de49ff3ca36

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell

This XLS file contains a Workbook_Open VBA macro that utilizes CreateObject to execute arbitrary code. The macro is designed to run automatically when the workbook is opened, indicating a downloader or initial execution stage. No specific family could be identified, and no external IOCs were directly extracted from the sample.

Heuristics 5

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` `28beef4721f8af1a8a9ececea09e89bcce056727237dd5900613c0dc3f750936`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2128 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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