Emotet — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 406af0dbbf942efe…

MALICIOUS

Office (OLE) / .XLS

53.0 KB Created: 2015-06-05 18:19:34 Authoring application: Microsoft Excel First seen: 2022-04-21
MD5: 1c770e23ab5a3851646a62ae1df1da2f SHA-1: fe0b839593f89ca25af054c8d04a097dfad6b51e SHA-256: 406af0dbbf942efec2f50abab748475f42ad0b413241ff1b9e9f81b432ad9eed
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is an Excel 4.0 macro-enabled workbook. Heuristics indicate the presence of an Auto_Open macro that utilizes dangerous functions, specifically the RUN function. This macro is designed to download and execute a second-stage payload from one of the embedded URLs. The ClamAV detection name 'Doc.Downloader.Emotet04222-9946520-0' strongly suggests the Emotet family.

Heuristics 5

  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
  • XLM Auto_Open with dangerous formula APIs critical OLE_XLM_DANGEROUS_FN
    Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
  • ClamAV: Doc.Downloader.Emotet04222-9946520-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet04222-9946520-0
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://gandhitoday.org/video/6JvA8/
    • http://djunreal.co.uk/site/ApOKpFad/
    • http://johnsonsmedia.it/img/ZBNk0xpRL8YEVl/
    • https://fpd.cl/cgi-bin/N/
    • http://genccagdas.com.tr/assets/doWHIxLe7e/
    • http://grafischer.ch/fit-well/wDPTwKtZPoWL12/�

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
beb0c554ad63c5f2722c80e0b78d729b3adbe1de27a782527a8b7a3f85e11f34		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 8288 bytes

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