Emotet — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 239453f6ee71ea2b…

MALICIOUS

Office (OLE) / .XLS

134.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 8bf2101417b6272b6bbd613c7029e5de SHA-1: e7a8c543e865105952c55f160c9472cd8d4c152c SHA-256: 239453f6ee71ea2b3c8ea203839f961bd5aee05bb1db00813bfbd33adeb4e9c3
280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1105 Ingress Tool Transfer

The sample is a macro-enabled Excel file that leverages VBA to execute a series of URLs. The Workbook_Open macro is triggered upon opening, and it uses Wscript.Shell to download and execute a second-stage payload. The reconstructed URL is "http://mytelefoniists.de/wp-content/bLM8fxV2MQ8fX2M/ ,https://www.yeald.finance/wp-content/uploads/jqAOrV8A8quhL23HMj/, http://tattooblog.cn/wp-includes/7AvyW/ ,http://docs-construction.com/wp!admi/jDQdg/, http://sep.dfwsolar.club/hzh3v/poAgoypsuzh6a1EIG/, http://b-lubisi-motivation-speaker.com/wp-admin/WF5rQabNRai/, https://pmfstukm.coi/wp-admin/SoenE35FXJBjVnfmE/, http://sesco-ks.com/wp-content/DJkMVU6cB45/, https://sangwin.in/magnisapient/UzYQ1lvgwq/, http://actividades.laforetalenguage.com/wp-admin/OfQx/, http://isrgbackup.com.br/wp-admin/hvvAXq4cDyKBezO/". This behavior is characteristic of Emotet downloaders.

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
d6216b1540c6d866e0cdc66ed3bfa2b79b477655c56d42a698e7b407351a97e3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6560 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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