Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 07f86fe5ff7119be…

MALICIOUS

Office (OLE) / .DOC

267.3 KB Created: 2020-02-06 15:22:00 Authoring application: Microsoft Office Word
MD5: 5c4566596ff4e7a23a8edbac9bdd60e6 SHA-1: f2df0cdbe1407aab050a35b238090256953bb0df SHA-256: 07f86fe5ff7119be3d271f6ab391e6a286b0a85bc9af9560d72136eccbdab255
262 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 a malicious OLE document containing VBA macros. The 'Document_Open' macro is present and utilizes 'CreateObject' along with a hidden UserForm property to execute code, a known technique for command staging. ClamAV specifically identifies this as 'Doc.Dropper.Emotet-7580044-0', strongly suggesting the Emotet family. The macro's primary function appears to be downloading and executing a secondary payload.

Heuristics 7

  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
  • ClamAV: Doc.Dropper.Emotet-7580044-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Emotet-7580044-0
  • 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
5dcc32c57737dd29c44bd2a7e5eed1330c44b25202f63c8a27b7e688f860594c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 37677 bytes

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