Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 682b88668279b5fb…

MALICIOUS

Office (OLE) / .DOCX

208.6 KB Created: 2020-10-30 08:52:00 Authoring application: Microsoft Office Word
MD5: e89396f5978b35f62bb3a0db46a83bee SHA-1: a96a9faa1f11cbdadbea38b5fe1a8114010d2e5e SHA-256: 682b88668279b5fb8415dfbe6b8a135dca290767dd5bed3fc6b45d230d3c3925
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.EmotetRed02224-9938637-0', indicating it functions as a downloader. The presence of a 'Document_Open' macro that utilizes 'CreateObject' strongly suggests the execution of malicious code. This macro is likely responsible for downloading and executing a secondary payload, a common tactic for Emotet. The VBA code itself is heavily obfuscated, but the heuristic firings confirm its malicious intent.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
3b4c2a22d0b516cd2d6141ac35df0fe0efc5e56c8812d3fa768461278bc89f15
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17545 bytes