Emotet — Office (OOXML) / .XLSM malware analysis

Static analysis result for SHA-256 fae059bd8c132f85…

MALICIOUS

Office (OOXML) / .XLSM

92.0 KB Created: 2015-06-05 18:17:20 UTC Authoring application: Microsoft Excel 12.0000
MD5: 902abf423ba6ff6cfd7516ae3736e724 SHA-1: 02957b889c631d745e33a6f8c02dfe6ff4274f53 SHA-256: fae059bd8c132f8500cdee6a5a5f7636cd8602f60925d3b12e7ab75485ef8426
200 Risk Score

Malware Insights

Emotet · confidence 95%

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

The critical ClamAV heuristic identifies this file as 'Xls.Downloader.EmotetRed02221-9938910-0', strongly suggesting the Emotet family. The presence of a Workbook_Open macro (OLE_VBA_WBOPEN) and CreateObject calls (OLE_VBA_CREATEOBJ) indicates the macro is designed to execute code. The embedded VBA script, while truncated, contains logic that reconstructs a complex command line involving multiple URLs and the execution of a VBScript file from the 'c:\programdata\' directory, likely to download and execute a second-stage payload. The reconstructed command line includes the following URLs: 'http://harperhousseproducts.com/Merchan2/ARSf1LICoauhH1rDiH/', 'http://holubivideo.com/eln-images/zqqgz0YXapiWbF/', 'http://magicblog.tatomotors.com/wp-incudades/7faN9/', 'http://chastonngroditski.com/eln-images/sksSC/', 'http://soantiqeus.com/cgi/9ii/', 'https://greenlawnirrigations.net/GLI_New/Jrlt3mOiezoE/', 'https://on-lineventures.net/ELN_Images/AYvykzgg/', and 'http://ericandrobbin.com/cgi/Re8rRaG2HDNOOG1/'. It also specifies the execution of 'c:\programdata\yhjlswle.vbs' and 'c:\programdata\ughldskbhn.bat'.

Heuristics 5

  • ClamAV: Xls.Downloader.EmotetRed02221-9938910-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.EmotetRed02221-9938910-0
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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 project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
de7bcbc45ff0a77d05d9af662bacc316e71be11a980e94f6673e556a5dd9d1bc		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 12808 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
fe2fc2bde7538aed38ed4df21e16c86de9c6e383855646a05901d53f6366aa71		 vba-project OOXML VBA project: xl/vbaProject.bin 37888 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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