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

Static analysis result for SHA-256 fd05481da74a6d89…

MALICIOUS

Office (OLE) / .DOCX

55.0 KB Created: 2021-06-01 15:35:00 Authoring application: Microsoft Office Word
MD5: 7bad9bfadd445f637abb738bba8000c7 SHA-1: 9f286f77edda0ea0cdfd3fbd897b3e007974d30a SHA-256: fd05481da74a6d89ac3c60db954e8f02a85711f9abaf12ede2d4e54eaf06a032
270 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a Microsoft Office document containing VBA macros. Heuristics indicate the use of WScript.Shell and Shell() calls, suggesting the execution of external commands. The presence of 'macros.bas' and the 'SC_STR_WSCRIPT' heuristic further support this. The primary intent appears to be the execution of a second-stage payload via WScript.Shell.

Heuristics 8

  • 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
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
ba0c76c64a0385d01602fca83806011f2ae3a607703996f8afa4b8207ed01e89		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20129 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved artifact contains 38 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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