Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 f7f55e4aae933199…

MALICIOUS

Office (OLE) / .DOC

438.0 KB Created: 2010-07-09 01:32:00 Authoring application: Microsoft Office Word
MD5: 2717bdae9353403d767249bd10b6b145 SHA-1: ac5db1d5475a8aef85934d8ecf777667150dba30 SHA-256: f7f55e4aae933199a4fe9d95b2fa12e452854811efc502ba4abb3693158466f0
208 Risk Score

Malware Insights

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

The file is a Microsoft Word document with a high-confidence ClamAV detection as Doc.Trojan.WhiteIce-1. Static analysis revealed VBA macros with auto-execution and execution tokens, indicating an attempt to run code upon opening. The presence of a NOP-equivalent sled and heap spray patterns further suggests shellcode execution. The document body itself is a travel itinerary for Shanghai, likely a lure.

Heuristics 6

  • ClamAV: Doc.Trojan.WhiteIce-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.WhiteIce-1
  • Heap-spray pattern detected high SC_HEAP_SPRAY
    Repeated 0x41 (A) bytes found
  • 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.
  • NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED
    Long run of 0x41 bytes
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
338ab823c2008ad0a5b196b38108549031f55d901a6786bb2a0f9b124b44605c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 62797 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 88 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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