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

Static analysis result for SHA-256 cf6e6033911897f8…

MALICIOUS

Office (OLE) / .DOC

215.0 KB Created: 2021-04-20 03:57:00 Authoring application: Microsoft Office Word
MD5: f6d63f04dd910826ece76579ea573b29 SHA-1: 237ff5333c4238305b6ea0560a984a111665d4dc SHA-256: cf6e6033911897f81ccadc63a74b9b9d14640c5b0721574cc3d8b0be0f443f17
340 Risk Score

Malware Insights

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

The sample is a malicious OLE document containing a large VBA macro. Critical heuristics indicate the use of WScript.Shell and Shell() calls, suggesting the macro is designed to execute commands. The presence of AutoOpen and CreateObject further supports the intent to run code, likely to download and execute a second-stage payload. The extracted URL is not directly actionable but is present in the document structure.

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
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
94790fd495a315c1984a4c309fa4116bede460bf033bcf52209a77cbb808d6a0		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 91023 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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