Emotet — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 992e7208b2f23c6b…

MALICIOUS

Office (OLE) / .XLS

144.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 7bfae9529f70b4143ba297721aaf4b6e SHA-1: 55b971164b9b2ae8d4580bbd0a03b3078215b790 SHA-256: 992e7208b2f23c6b66cacc9c2a7e519b0bfad54ea188657a77c8e1ee4b6ca086
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is a macro-enabled Excel document identified as malicious by ClamAV (Doc.Downloader.EmotetExcel02226-9938630-0). The Workbook_Open macro executes a batch script, reconstructed as 'c:\programdata\jledshf.bat', which in turn uses 'wscript.shell' to download and execute payloads from multiple URLs. The script also attempts to establish persistence by writing to the registry. The presence of 'CreateObject' and 'Wscript.Shell' firings, along with the macro's execution flow, strongly indicates a downloader functionality typical of the Emotet family.

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
e5cfab216070fe1e4cc99c114be1118111da457aa00152d1441ffb86ba5a4299		 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.

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