Emotet — Office (OLE) / .XLSX malware analysis

Static analysis result for SHA-256 1058469e9a835667…

MALICIOUS

Office (OLE) / .XLSX

121.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: d9e5ead5d1a0e4612d79d2062338dabf SHA-1: 6e59a198e42f434fcae7c08ec2f85f4abdf07dd5 SHA-256: 1058469e9a83566730e66d0d7a2c40070d7ff2955d4c2a944f55b2c897cd4578
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Excel file containing VBA macros, specifically a Workbook_Open macro that executes Windows Script Host commands. The macro attempts to create and execute a VBScript file located at 'c:\programdata\tjspowj.vbs' and a batch file at 'c:\programdata\uidpjewl.bat'. The batch file contains obfuscated commands that appear to download and execute a second-stage payload from multiple URLs, including 'http://youlanda.org/eln-images/n8DPZISf/'. This behavior is characteristic of Emotet downloaders.

Heuristics 6

  • 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.
  • 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

Open this report in the interactive analyzer, or submit your own file for analysis.