Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 11f35a60b3e3164a…

MALICIOUS

Office (OLE)

238.9 KB Created: 2020-08-21 23:32:00 Authoring application: Microsoft Office Word
MD5: 03dad89d4dd70f1d557fb3c5c880b14d SHA-1: 9ebf56e0784de632d353b361b8a8061ff9ef72a6 SHA-256: 11f35a60b3e3164aef70ca3e1882bb3a6f6512efd1b08de291aa3f6b893ff0a9
262 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open macro and a UserForm hidden-property command stager, which are indicative of malicious intent. The macro's obfuscated nature and use of CreateObject suggest it is designed to download and execute a secondary payload. The ClamAV detection further supports its malicious classification.

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.Malware.Generic-9443669-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9443669-0
  • 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
438e61940fc117dc32a2aee9512c12ec51d47c2e516bee2555708e13a383cb34		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10283 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.