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

Static analysis result for SHA-256 e7887fad0dd38c07…

MALICIOUS

Office (OLE) / .DOC

281.0 KB Created: 2010-03-23 08:43:00 Authoring application: Microsoft Office Word
MD5: 43ca0383afcc9bee66d29ca1da463480 SHA-1: 0dfa7f7ce504cd87c77e1f3dcf594212bfea27f7 SHA-256: e7887fad0dd38c0734caf380d90de4eea7b5e8af82bd0b240b643236c9e8c82b
208 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV with the signature Doc.Trojan.WhiteIce-1. High-severity heuristics indicate the presence of a VBA auto-execution mechanism designed to run shell commands, coupled with a heap spray pattern and a NOP sled, suggesting an exploit attempt. Although no specific URLs or further script details were extracted, the combination of these indicators points to a macro-based attack designed to execute arbitrary code.

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
af748b5b5a201d0d4bdb22108fb0dace70751711d0d8fa2d1dc14d455f624891		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 62798 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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