Malicious Office (OLE) / .X — malware analysis report

Static analysis result for SHA-256 2e5d09eed1af7f9d…

MALICIOUS

Office (OLE) / .X

186.5 KB Created: 2007-08-29 06:57:45 Authoring application: Microsoft Excel
MD5: 3e145e8406fb340067151059b98e3cb2 SHA-1: e4bff6b866f170665260b04d1324176f03f9e4dc SHA-256: 2e5d09eed1af7f9d50d901e1eb65dd284262bd3dc72958defbef9188feea9759
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The file is an Excel document containing VBA macros, with a Workbook_Open auto-execution trigger. The critical OLE_VBA_SHELL heuristic indicates that the macro attempts to execute a command via the Shell() function. While the document body appears to be legitimate pension-related information, the presence of the Workbook_Open macro and Shell() call strongly suggests that the macro is designed to download and execute a second-stage payload. No specific family could be identified.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • 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.

FilenameKindSourceSize
macros.bas
00d8a655ece3ecabada780351a659beed9b50ff250537dffd5f137d234f7d1f1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 10205 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.