Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 0f4f42844099e3a4…

MALICIOUS

Office (OLE)

66.1 KB Created: 2018-11-06 07:28:00 Authoring application: Microsoft Office Word First seen: 2019-01-12
MD5: 9d5b1ae8d5574028eda85c2585848895 SHA-1: 529d44d2516276f566b32dcb612dab40d2098f44 SHA-256: 0f4f42844099e3a466abb91a896c2ad4a131bd0b3e7baf9334b906ba49f0c602
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 identified as malicious by ClamAV with the signature Doc.Dropper.Emotet-6769504-0, indicating it is likely an Emotet variant. The document body contains obfuscated PowerShell commands that are designed to download and execute a second-stage payload. Specifically, the command uses a Base64 encoded, deflated string which is then decompressed and executed via PowerShell, likely to establish a malicious foothold.

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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