Emotet — Office (OLE) / .XLSX malware analysis

Static analysis result for SHA-256 57cd2813ec18ee80…

MALICIOUS

Office (OLE) / .XLSX

138.0 KB Created: 2022-02-09 09:48:26 Authoring application: Microsoft Excel
MD5: edeb38ae8b6471140eff8e54dac1495a SHA-1: 4d296494d8713e42e297bb63b2be4cb923dc0be6 SHA-256: 57cd2813ec18ee80c1b034ed2b8f3fd3193e57935bbc8f66413903116bbd2845
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically a Workbook_Open auto-execution, strongly indicate a malicious document. The VBA script contains obfuscated commands that reconstruct paths for a VBS file ('c:\programdata\oue4hjld.vbs') and a BAT file ('c:\programdata\bhnasleil.bat'), and also reconstructs URLs for downloading a second-stage payload. The script's intent is to download and execute a payload, consistent with Emotet's typical behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02220-9938909-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02220-9938909-0
  • 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
0bee010f01a838fb2c1c9d56627de9e99abd5fd0a10f37f3b08746080910f3d7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 52433 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.