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

Static analysis result for SHA-256 c08b910e03329dbf…

MALICIOUS

Office (OLE) / .DOC

87.4 KB Created: 2018-08-24 13:57:00 Authoring application: Microsoft Office Word
MD5: ce60e47c12b75d183282868be0e8ec15 SHA-1: d8143e8d863d0f233acb4532a1c1672c5db15cb0 SHA-256: c08b910e03329dbf10e3317a0419a458414db07b4724626e343127067263a03a
400 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample contains VBA macros, including an AutoOpen macro, which is a common technique for initial execution. Critical heuristics indicate the use of WScript.Shell and Shell() calls, suggesting the macro attempts to download and execute a second-stage payload. The presence of these indicators strongly points to a malicious document designed for payload delivery.

Heuristics 10

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • ClamAV: Doc.Malware.Generic-6668129-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-6668129-0
  • 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 — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0f3dc9bb43f05af224845bc7ebd02f22fbd68a1518174291edf3d94dfab678f7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10927 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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