Emotet — Office (OLE) / .XLSX malware analysis

Static analysis result for SHA-256 58dd1ddb5e54c2c6…

MALICIOUS

Office (OLE) / .XLSX

121.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: da39d89c2219da282a8a3479647c246e SHA-1: 2536f2c9d3591dfe75f75df0b754e3ddce8dd4a4 SHA-256: 58dd1ddb5e54c2c6475048a68b75309c046035063ad020767936f5f001bee3b8
280 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV detection and high-severity heuristics for VBA macros, Workbook_Open execution, and CreateObject calls strongly indicate a malicious macro-based document. The Workbook_Open subroutine initiates the execution of a VBScript payload. The script constructs a URL from concatenated strings, which is then downloaded and executed. The reconstructed URL is 'http://youlanda.org/eln-image/n8DPZISf/,http://roserviceb.net/eln-image/EjdcOMlY8Gy/,http://vbaint.com/eln-image/H2pPgtE8XzENc/,http://framakeers.us/eln-image/U5W2IGE9m8i9hr/,http://niplaw.com/asoLidounada,http://robertmchilesp.com/cgi/3f/,http://vocoptions.net/cgi/ifM9R5ylbVpM8hfr/,http://misinnynyc.org/fonts/JO5/,http://roberflod.us/eln-image/DGI2YOkwS9XPO/,http://mpmcomputing.com/fonts/JO5/,c:\programdata\tjspowj.vbs,c:\programdata\uidpjewl.bat'. This behavior is characteristic of Emotet downloaders.

Heuristics 7

  • ClamAV: Xls.Downloader.Emotet-ab81c42b2bd4747e-9951196-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.Emotet-ab81c42b2bd4747e-9951196-0
  • 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
faf50200d5a9adeeda00cc1da1bbf8f6abf0317a1e97a58db8ae804ba12ba446		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13985 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.