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

Static analysis result for SHA-256 f6c16a9a4dcc11fa…

MALICIOUS

Office (OLE) / .XLS

105.0 KB Created: 2021-04-13 13:37:17 Authoring application: Microsoft Excel
MD5: 6a9a5a2b99962e2b83ab6606108fa4d8 SHA-1: 9569f2de8da8fe50d07d8debf831708b4ccd3650 SHA-256: f6c16a9a4dcc11fa3fe356887322aae5379e7b74892aa6fbb7a8d0874b13d09c
182 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

This XLS file contains VBA macros, specifically a Workbook_Open macro that is designed to execute automatically. The macro uses CreateObject to likely download and execute a payload from the embedded URL. No document body text was available for analysis, but the script's behavior strongly suggests a downloader or droppper functionality.

Heuristics 6

  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.
    URL http://209.141.61.124/Q-2/asd80.ex

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
bbbee478cab317bf3f501e523a72d1a991867f07a216c6d5f975b43c991b6055		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1231 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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