Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 289807853482dfad…

MALICIOUS

Office (OLE)

131.5 KB Created: 2006-03-29 18:54:00 Authoring application: Microsoft Office Word
MD5: 02788cf7dc5c915daa0d883d36e9ca28 SHA-1: 03e5f0aea12bc8ca026fe7aef54568edfd21f440 SHA-256: 289807853482dfadaa70824d4b5d8e6f4798faa932b9bfcc1b8d6e3866d0628e
208 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The file is identified as malicious by ClamAV (Doc.Trojan.WhiteIce-1). Static analysis revealed VBA macros with auto-execution tokens and Shell execution, indicating an attempt to run arbitrary code. A heap spray pattern was also detected. While the VBA source code is large and potentially obfuscated, the presence of auto-execution and the ClamAV signature strongly suggest it's designed to download and execute a second-stage payload.

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
5f6bf0531c94595720e8cdc09a8f6a5233a44ee78b696ce3e7ccaf217ea643bb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 62793 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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