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

Static analysis result for SHA-256 1307589ab32cc9fb…

MALICIOUS

Office (OLE) / .XLS

40.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: a476fa8faa9ffa17b6b90f57c4bb5c53 SHA-1: 27fc70addbd9215e41fdb70aaf69a7b122c77175 SHA-256: 1307589ab32cc9fb994a0e772efa84f1cbd39e47ae09b457e290df4ab4b0ca09
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

This Excel file contains VBA macros that leverage the ShellExecute API to run a command. The macro constructs a string for CreateObject and concatenates strings from cell notes to form arguments for ShellExecute. This indicates the file is designed to execute arbitrary commands, likely to download and run a second-stage payload.

Heuristics 3

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
ae0c453551958d7d05b5583382e1b0d508d044db14cd20be55851033e8bcaaa2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1532 bytes

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