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

Static analysis result for SHA-256 1c602fbf539ff163…

MALICIOUS

Office (OLE) / .DOC

104.5 KB Created: 2001-01-03 18:16:00 Authoring application: Microsoft Office Word
MD5: 9c9672d524f0194f59201aec675e98e7 SHA-1: 49ecad258ea34c21b83802ee0c11f24c4546680d SHA-256: 1c602fbf539ff163b841f9354696c0f50e99fe4853850133eb2186baa46aa7a0
180 Risk Score

Malware Insights

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

The file contains a high-confidence detection for VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates the macro is designed to execute automatically when the document is opened. The heuristic firings suggest obfuscation and auto-execution, pointing towards a downloader or dropper functionality. No specific family could be identified, but the presence of a VBA macro designed for auto-execution is a strong indicator of malicious intent.

Heuristics 5

  • 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
bcbdc23848945e68b2b149001c8681e0c742da401c3550458ff18ee6d5d0b4af
vba-macro oletools.olevba.extract_macros (decoded VBA source) 41366 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 26 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.