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

Static analysis result for SHA-256 c96b4b293bce084a…

MALICIOUS

Office (OLE) / .DOC

232.0 KB Created: 2021-05-17 05:55:00 Authoring application: Microsoft Office Word
MD5: c982efe8ebdd6640f5cc57d39b9f6329 SHA-1: ee06e2795929a746c9500a3738d88de1ab1b53f5 SHA-256: c96b4b293bce084a2792a55a3f47015208d165022a6073e88f1630ab4860f24d
342 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 a large VBA macro. The macro utilizes WScript.Shell and CreateObject, indicating it is designed to execute commands or launch other processes. The presence of an AutoOpen macro further suggests automatic execution upon opening the document. The primary intent appears to be downloading and executing a second-stage payload, though specific URLs for this are not present in the extracted evidence.

Heuristics 9

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6c3985f44ab38aba92234218a64a7f25555b85a8602a79b2df1c31e74b8fcd63		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 102287 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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