Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 3896bd4fe9586482…

MALICIOUS

Office (OLE)

35.5 KB Created: 2000-01-14 10:07:00 Authoring application: Microsoft Word 8.0
MD5: 0c084ace610330bf0a76a73293822a81 SHA-1: a005739f40c02912daaddc3170f2e43746ec8f72 SHA-256: 3896bd4fe95864828e776fab56ba142c4f4d0c80d0a22c1d067b5e78d45349d7
260 Risk Score

Malware Insights

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

The file is an OLE document containing VBA macros, as indicated by the 'OLE_VBA_MACROS' and 'macros.bas' findings. The 'SC_STR_WSCRIPT' and 'OLE_VBA_CREATEOBJ' heuristics suggest the macros are attempting to execute code, likely to download and run a secondary payload. ClamAV detections 'Doc.Trojan.Hopper-4' and 'Win.Trojan.Internal-7' further confirm its malicious nature. The extracted artifact 'macros.bas' is included as a primary IOC.

Heuristics 6

  • ClamAV: Doc.Trojan.Hopper-4 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Hopper-4
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
e285a22e47b85063ec78ec0a9cde3b0c45ae0b771146c31f7ef920d69d83c022
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18632 bytes
Detection
ClamAV: Win.Trojan.Internal-7
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.