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

Static analysis result for SHA-256 3b0c6e1bc7b7cd88…

MALICIOUS

Office (OLE) / .DOC

29.0 KB Created: 2010-09-14 19:03:00 Authoring application: Microsoft Office Word
MD5: 529c5ee2fc18b9301d763d0814badaf0 SHA-1: 6cb735472f3ffba785f881882eadd5940dacef42 SHA-256: 3b0c6e1bc7b7cd8890412c8cb4aa8bb8fbf3ba29a8f3ca83beb60687d0449588
340 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is a malicious DOC file containing VBA macros. A critical heuristic firing indicates a Shell() call within the VBA code, and another critical heuristic confirms this is an auto-executing macro (Document_open) that uses Shell execution. This strongly suggests the macro's purpose is to download and execute a second-stage payload. The ClamAV detection of Win.Trojan.Fujin-1 further supports the malicious nature.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Win.Trojan.Fujin-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Fujin-1
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2b63e5abce8b2dd8a427e0226846ed1bc9649765bd09f188cee9ec3c0917a40e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1823 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.