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

Static analysis result for SHA-256 ed7589395bb17961…

MALICIOUS

Office (OLE) / .DOC

95.0 KB Created: 2022-05-08 13:01:00 Authoring application: Microsoft Office Word First seen: 2022-05-08
MD5: 56bff17577119c146c360c73a2e0a9b1 SHA-1: 42ec1bb166ca9b5e76fa4b4202b412389d16ce7b SHA-256: ed7589395bb17961537d599c7f65c1634c897fa6ddbef55b6bc1dadadcb2828c
342 Risk Score

Malware Insights

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

The sample is a malicious DOC file containing a VBA macro. The macro utilizes WScript.Shell and CreateObject, indicating an attempt to execute arbitrary commands. Specifically, the 'Document_Open' macro is configured to execute via 'Shell()', a critical finding. This suggests the macro's primary purpose is to download and execute a second-stage payload. No specific family could be identified, but the techniques used are common for initial access and payload delivery.

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
  • 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
abeb6296ca66ea9fda7bf4f2efd1190422a60677923e5f931de57393c9051727		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23009 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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