Office (OLE) / .XLS malware analysis — malicious · 204806f363e25b8c

MALICIOUS

Office (OLE) / .XLS

231.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: 71de1e4e9693bd5e37eca72de6f42cde SHA-1: 79197c202c6b9b5444e54b676c71daa170f66b3d SHA-256: 204806f363e25b8caab19fade1152cbdef6d19a2ee0f122ce2a2aa3949154f1d

162 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

This XLS file contains VBA macros that leverage ShellExecute to run a command. The script attempts to reconstruct a command string from cell values and execute it. The presence of ShellExecute and references to PowerShell indicate a likely intent to download and execute a second-stage payload. The specific command execution details are obfuscated within the VBA code, making precise IOC extraction difficult, but the overall pattern is indicative of a downloader.

Heuristics 6

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
Reference to PowerShell high SC_STR_POWERSHELL

Reference to PowerShell
GetObject call high OLE_VBA_GETOBJ

GetObject call
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact medium 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.
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://ns.adobe.com/xap/1.0/
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/iX/1.0/
- http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `e3f71d61dbdac3fab4130e45d0a93dec63f3583e0881dbfc327408745099cfc7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1389 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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