Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9fbeb624fe34c949…

MALICIOUS

Office (OLE)

144.0 KB First seen: 2015-09-17
MD5: 5df1a9c7c6232b3537900edee6df9c50 SHA-1: 5c502e5b3dca47234873c66acc4c5cd7b991fcaf SHA-256: 9fbeb624fe34c94912677f1a8eccde9559f3c5d0d08382101d8a1bf098e78dd0
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a malicious Office document containing an embedded executable payload. Heuristics indicate a memory corruption vulnerability (CVE-2011-1269 / MS11-036 family) is likely exploited to execute the embedded PE file. The document body content is irrelevant to the malicious functionality, serving only as a lure.

Heuristics 4

  • PowerPoint binary-format RCE payload — CVE-2011-1269 / MS11-036 family critical CVE likely PPT_BINARY_MEMORY_CORRUPTION_PAYLOAD
    A macro-free binary PowerPoint (.ppt) document carries a native code payload (embedded PE and/or process-injection shellcode), staged in an oversized binary stream. Legitimate presentations do not embed executables or shellcode; this is the payload half of a PowerPoint memory-corruption exploit (CVE-2011-1269 / MS11-036 family; the same record-overflow delivery is shared with CVE-2010-2572 and CVE-2009-0556).
  • Embedded PE executable critical OLE_EMBEDDED_EXE
    MZ/PE header found inside document — possible embedded executable
  • OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOAD
    OLE compound file contains a large high-entropy region beyond the declared major streams and that region includes shellcode, PE, or loader API markers. This is a payload-carrier signal, not a specific CVE attribution by itself.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_office_0001aa00.exe embedded-pe Office MZ+PE at offset 0x1AA00 38400 bytes
SHA-256: 70c7e2e57fa5ea0b58838cfe6d0aaf659a239d047d25f500e73676dfbefcebdb
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.45, consistent with packed or encrypted content.

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