Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 97195d1425c64fa8…

MALICIOUS

Office (OLE)

68.0 KB Created: 2018-11-08 11:05:00 Authoring application: Microsoft Office Word First seen: 2019-03-18
MD5: e2ea8702409f1ff99362a9100bdf50e3 SHA-1: 05223c8d423a103cb63bb1e0ecd76c5750a9422a SHA-256: 97195d1425c64fa8acdf1eb028daa928f2ad7b85bf6a17822355cd354743c920
182 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1566.001 Spearphishing Attachment

The sample was detected as Emotet, a known downloader. Heuristics indicate the use of cmd.exe and PowerShell to execute obfuscated commands. The embedded PowerShell command decodes and decompresses a Base64 string, which is then executed, likely to download and run a second-stage payload.

Heuristics 5

  • ClamAV: Doc.Dropper.Emotet-6769504-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Emotet-6769504-0
  • Suspicious cmd.exe invocation with execution flag high SC_STR_CMD
    Suspicious cmd.exe invocation with execution flag
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)

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