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

Static analysis result for SHA-256 2c6f6041beb87f62…

MALICIOUS

Office (OLE) / .DOC

70.5 KB Created: 2020-04-19 02:19:00 Authoring application: Microsoft Office Word
MD5: bbd8f222b9fd0f370f28de0e1bd0868b SHA-1: d348e259aa31979be62a7f975eff5104f7b20ffa SHA-256: 2c6f6041beb87f62289cc92ae1a66023932dde34aad709920a767d72739cc571
180 Risk Score

Malware Insights

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

The sample is a malicious DOC file containing VBA macros. The 'Document_Open' macro is present and triggers a 'CreateObject' call, indicating the execution of arbitrary code. This is further supported by the 'VBA p-code auto-exec with execution tokens' heuristic. The presence of a long encoded blob within the extracted macros suggests the download and execution of a second-stage payload. The benign URL listed is likely a red herring or misclassification.

Heuristics 6

  • 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
6f8473271164a59294d2cc26dd09e2fa093834b060a6dbbab67367d7b9d836e9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8108 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 30 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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