Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 72a900ad332e866b…

MALICIOUS

Office (OLE)

156.5 KB Created: 2020-09-15 16:41:00 Authoring application: Microsoft Office Word
MD5: 7b6364f8b0a59f8e3a6cba5ec611509b SHA-1: ea2b4abd0e653163b897e589bd61a35e4a9dba67 SHA-256: 72a900ad332e866b51a561a2de218571579ad070a8f19799710a2ac261a9f7b6
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV with the signature Doc.Malware.Emotet-9762373-0, indicating a known Emotet variant. The presence of a Document_Open VBA macro, which uses CreateObject and p-code execution, strongly suggests the execution of obfuscated code. This code is designed to download and execute a secondary payload, a common Emotet behavior.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9762373-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762373-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
093df0d9d9ab28d17e10b8a3d4d0d2f7c34db272923888f5dfa322b516df3f65
vba-macro oletools.olevba.extract_macros (decoded VBA source) 22905 bytes