Emotet — Office (OLE) / .XLSX malware analysis

Static analysis result for SHA-256 2898572c564402e8…

MALICIOUS

Office (OLE) / .XLSX

138.0 KB Created: 2022-02-09 09:48:26 Authoring application: Microsoft Excel
MD5: 5b44b7586c486496af7b0b821c5cf7e2 SHA-1: f01d9364dbcf05909e0693febe0037237162b2b4 SHA-256: 2898572c564402e868f16f6ba229013b287296736e85e32e6fb06dc6cd380e43
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File T1071.001 Web Protocols

The sample contains VBA macros, specifically a Workbook_Open auto-execution routine, which is a common delivery mechanism for Emotet. The script attempts to download and execute a VBS file from a hardcoded URL, which is then likely to execute a batch file. The reconstructed URL 'http://midnighthilsilvercraftes.com/store/wBqNUwc/B710N4cA6R3/' and 'http://tempra.com/NAT_E_05_22_2009/BI710N4cA6R3/' are indicative of a downloader. The presence of 'c:\programdata\oue4hjld.vbs' and 'c:\programdata\bhnasleil.bat' further supports this. The ClamAV detection name 'Doc.Downloader.EmotetRed02220-9938909-0' strongly suggests the Emotet family.

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
08a627cb8ee100970d86b215b186adba0ced1e921ca892723774523e06f77d7b		 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.