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

Static analysis result for SHA-256 7d2ec4837172db84…

MALICIOUS

Office (OLE) / .DOCX

138.0 KB Created: 2022-07-09 05:35:00 Authoring application: Microsoft Office Word
MD5: b059ab7a19bc94ce84c615b83cecaecb SHA-1: ec2bee4a9727574f538c0d21100ab1491691a0f2 SHA-256: 7d2ec4837172db84721093fa6806bc2b61a9ea7169818a6e0ea1c92ed0f602ff
308 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a Microsoft Office document containing a large VBA macro. Heuristics indicate the use of WScript.Shell, CreateObject, and Shell() calls, strongly suggesting the macro is designed to execute arbitrary commands. This is likely to download and execute a second-stage payload, a common technique for initial access.

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
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • CallByName call high OLE_VBA_CALLBYNAME
    CallByName 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 — 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
a0150f59d683e5f297d30b928d5ccf00494be35b4da6c0b6a95eb551414c466b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 59647 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 10 shell/COM execution token(s). Carved artifact contains 57 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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