Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 de81b2f27e61e697…

MALICIOUS

Office (OLE) / .DOC

145.5 KB Created: 2021-02-17 12:44:00 Authoring application: Microsoft Office Word
MD5: 5ec8820375cdb54b5233aa94d274968c SHA-1: b70b97eb0503b91682d30ce51223df00d9fedd45 SHA-256: de81b2f27e61e697c82c2d4fcd3f2a6d4bf154140459e9c9206434eff0688d15
340 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains a malicious VBA macro that is automatically executed upon opening the document, as indicated by the 'Document_Open' macro and 'Shell()' call heuristics. This macro likely attempts to download and execute a second-stage payload. The document body displays a deceptive message prompting the user to 'Enable content' to view the document, which is a common social engineering tactic.

Heuristics 9

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
a532e86743d193ee7b7e6ed3d284487d723dbbcb2d5d99b4929b26cba8b3376e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 35483 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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