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

Static analysis result for SHA-256 c5924eb9d616ca56…

MALICIOUS

Office (OLE) / .DOCX

167.9 KB Created: 2020-09-24 06:41:00 Authoring application: Microsoft Office Word
MD5: 2fb20bd66fd23d8425d7c245a59c76aa SHA-1: b799e2812fa2b2a77f7d72a2041eed37c383d438 SHA-256: c5924eb9d616ca56abefefa101be8004a3fc80f14ff4f81d96554191e02851a6
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro is configured to execute a PowerShell command, indicated by the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The reconstructed PowerShell command is 'powershell -enc JABXAE0A', which is likely responsible for downloading and executing a second-stage payload. The ClamAV detection further confirms its malicious nature.

Heuristics 7

  • ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
  • 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.
  • 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
5fc186fdbad9f31c9e64d83153a39dd477b4feadffd069d1417de0a82694326f
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18827 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.