Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 bcd6086375d1358a…

MALICIOUS

Office (OLE)

38.5 KB Created: 2007-01-23 00:28:21 Authoring application: Microsoft Excel
MD5: 17cd6bf8adea9c8cfd93e5d295571f5c SHA-1: fa91080df2ae6631c73184b1323c44f50f2ff3a7 SHA-256: bcd6086375d1358a39ee56eae4824ab450c76000480696041c43740b42399df7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an Excel document containing VBA macros, indicated by the OLE_VBA_MACROS heuristic. The document body lists various business projects and investment opportunities, suggesting a lure for a business investment scam. The embedded URL http://www.qyx.baoji.goy.cn is likely part of the scam or a command and control channel. The presence of SC_HEAP_SPRAY and SC_NOP_EQUIV_SLED heuristics suggests potential exploitation or obfuscation techniques within the macros.

Heuristics 5

  • Heap-spray pattern detected high SC_HEAP_SPRAY
    Repeated 0x41 (A) bytes found
  • NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED
    Long run of 0x41 bytes
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Suspicious extracted artifact info 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.
  • 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://www.qyx.baoji.goy.cn

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
39e92c3a65a520447b1abe9d677ac803498b0a20cf6200b319e448a0a147d4ff
vba-macro oletools.olevba.extract_macros (decoded VBA source) 7154 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 9 long base64-like blob(s).