Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d50f7d23e9ef4f0e…

MALICIOUS

Office (OLE)

471.5 KB Created: 1601-01-01 00:00:00 Authoring application: Microsoft PowerPoint
MD5: 902637e2e310f2c79a8b29145adbfd99 SHA-1: effe8259443397daee6b22cf7cadce0e3d51ea26 SHA-256: d50f7d23e9ef4f0e7f8cd58751ddfbc825ea0f0896bf600030b643e5b8232e92
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file is a PowerPoint document identified as malicious by ClamAV (Win.Trojan.Dropper-5725). It contains an embedded PE executable, indicating a dropper or downloader functionality. The presence of a CreateProcess API reference further supports the execution of external code. The embedded executable is the primary IOC.

Heuristics 6

  • Embedded PE executable critical OLE_EMBEDDED_EXE
    MZ/PE header found inside document — possible embedded executable
  • ClamAV: Win.Trojan.Dropper-5725 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Dropper-5725
  • 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 CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED
    Long run of 0x40 bytes
  • 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
embedded_office_00003869.exe
f2c3a7a1b6e78a64c93f3de6b9b0ac889a0c494fa56ea0a207177a4c8b439639		 embedded-pe Office MZ+PE at offset 0x3869 468375 bytes
Detection
ClamAV: Win.Trojan.Dropper-5725
Obfuscation or payload: unlikely

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