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

Static analysis result for SHA-256 b4bd1e08ea2da834…

MALICIOUS

Office (OLE) / .DOC

28.0 KB Created: 2021-09-06 09:49:00 Authoring application: Microsoft Office Word
MD5: 6b6bf51b3ba01cd34a704ba3ea883087 SHA-1: f97e52030b09a0b4428613c8e55db9c10e50dad6 SHA-256: b4bd1e08ea2da83401ebfede1826c1275aa875211497ddabdf2d03527bba9332
182 Risk Score

Malware Insights

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

The sample is a malicious Word document containing a VBA macro that executes upon opening. The macro writes a PowerShell command to 'C:\Users\Public\Documents\eventstep.cm'. This command downloads a second-stage executable from 'http://wingsteck.com/ts/Y/IMG_80350001.exe' to 'C:\Users\Public\Documents\singme.exe' and then executes it. The PowerShell command is constructed by concatenating strings, including the malicious URL and destination path.

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
e91956edfccc2dd17f11612daebcafcfa5b946fa8c0998e072ff7c7a94d689ec		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 831 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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