Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a95b019a25e4f007…

MALICIOUS

Office (OLE)

1.24 MB Created: 2006-04-23 16:09:25 Authoring application: Microsoft Excel
MD5: e382996528a8aa58e7e58124dd969f11 SHA-1: 5bab7b3a1835c900579ea623f61adce38265224c SHA-256: a95b019a25e4f007e708b02d6901fcc7d562270555382f6f552da787eeb2e2fd
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is an Excel document with a Workbook_Open VBA macro, indicating it attempts to execute code upon opening. The macro source exhibits obfuscation, and the document body presents a survey that likely serves as a lure to encourage macro execution. The embedded URL http://www.izep.info/ is associated with unknown reputation and is likely part of the malicious infrastructure. The Workbook_Open macro suggests an attempt to immediately run malicious code, potentially to download further payloads or establish persistence.

Heuristics 4

  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • 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
  • 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://www.izep.info/
    • http://www.izep.info�
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6f2afd2aa4a94884244919450b78e664ccf1bc501ce5d3b174697d69daf7b77b
vba-macro oletools.olevba.extract_macros (decoded VBA source) 106940 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 63 Chr/ChrW string-construction calls.