Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 7f919e89cb669ea9…

MALICIOUS

Office (OLE)

160.0 KB Created: 2010-03-15 09:33:00 Authoring application: Microsoft Word 9.0
MD5: 35f098908eb178795b43e9203eb19fa2 SHA-1: 9e1821af0847d0398209603ecc9e8322302b85b3 SHA-256: 7f919e89cb669ea9070cf89c30ec33b053a3dc4475d4493e259d2482cb2f10b6
300 Risk Score

Malware Insights

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

The file contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. ClamAV detections for 'Win.Trojan.Psycho-3' and 'Doc.Trojan.Melissa-1' on the file and an extracted artifact strongly suggest it's a trojan. The presence of VBA macros and the nature of the detections point towards a downloader or dropper functionality, aiming to execute further malicious code.

Heuristics 7

  • ClamAV: Win.Trojan.Psycho-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Psycho-3
  • 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.
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
3cf7ed033a4f307e4882ae60572d8978f2dab4b0feb4a435ff5544ed4fad512b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8879 bytes
Detection
ClamAV: Doc.Trojan.Melissa-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.