Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d00760d2b09271cd…

MALICIOUS

Office (OLE)

34.0 KB Created: 1999-01-07 06:46:00 Authoring application: Microsoft Word 8.0
MD5: 72f308233702fedd53fc95162772a5b6 SHA-1: 6892f10a29ce70bf751d3c39fb6cdf2708c32139 SHA-256: d00760d2b09271cd68a6f52751caeaaeb78209e87d4fd168fc77b0b15705b10b
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 to execute code. ClamAV detections indicate this is a known trojan. The presence of VBA macros and the 'CreateObject' call strongly suggest the document is designed to download and execute a second-stage payload, a common tactic for malware delivery.

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
5cc936c3b104854d301dd84453c888ff4948adb10b8fe99d26f98c883fcab31d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12869 bytes
Detection
ClamAV: Doc.Trojan.Melissa-4
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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