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

Static analysis result for SHA-256 2601ac1842ca01c6…

MALICIOUS

Office (OLE) / .XLS

129.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 27ad5979716c2dc24a2c246c673708b6 SHA-1: 506f72f978b83c1b10edf984a69da12803af437c SHA-256: 2601ac1842ca01c6839514266e9b6f42c6b4b2d223fa8cb7593ffb779ec56801
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell

The sample contains VBA macros that leverage `Wscript.Shell` to execute commands. Specifically, it attempts to run a .bat file located at `c:\programdata\ughldskbhn.bat` and a .vbs file at `c:\programdata\yhjlswle.vbs`. The macro also constructs a complex command line string that appears to be an encoded PowerShell command, likely for downloading and executing a second-stage payload from one of the provided URLs. The presence of `CreateObject` and `Wscript.Shell` firings, along with the constructed command, strongly indicates a downloader functionality.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02220-9938909-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02220-9938909-0
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7a075e02dc1e88807280b9b84946715e79a3c091d50391301434649c77b78ea1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12808 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.