Emotet — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 7ad8e0e4debb31de…

MALICIOUS

Office (OLE) / .XLS

150.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: d5229550095a1adb5031e4f557df63bd SHA-1: abd8d41a1bc98e4487f8ef3e760bcd7f0d376853 SHA-256: 7ad8e0e4debb31dea38da1a116af87ed7e48b1d5d786f6b7b0880eaaeffc64f1
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File

The file contains VBA macros, specifically a Workbook_Open macro, which is a common technique for initial execution. The script leverages `CreateObject` to instantiate `Wscript.Shell` and attempts to create and execute a batch file named 'jledshf.bat' located in 'c:\programdata\'. The embedded script also contains obfuscated PowerShell commands that attempt to download and execute payloads from multiple URLs. The ClamAV detection name 'Doc.Downloader.EmotetExcel02226-9938630-0' strongly suggests an Emotet family attribution.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetExcel02226-9938630-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02226-9938630-0
  • 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
006c4f4d54d1c9bb906763adb0bd849cdbbe9d88f3fa78ad2d18ef6987f96c37		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8906 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.