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

Static analysis result for SHA-256 85ef63d5e91d68d2…

MALICIOUS

Office (OLE) / .DOC

73.5 KB Created: 2020-06-23 18:50:28 Authoring application: Microsoft Office PowerPoint
MD5: 35a97576df9d25b16b60ec7def56b7c2 SHA-1: b0d822e2ecb766f084c18e2d439f13903edaa595 SHA-256: 85ef63d5e91d68d2c34840a49d66dc78cb4342fbf959e1aaa1fb09464ba692be
320 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The file contains VBA macros, specifically an Auto_Close macro, which utilizes WScript.Shell to execute commands. This indicates the macro is designed to run arbitrary code upon closing the document. The presence of 'Shell()' and 'CreateObject()' calls, along with references to WScript.Shell, strongly suggests the intent is to download and execute a second-stage payload. No specific family could be identified, but the technique is common for initial access.

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
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Suspicious extracted artifact medium 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.
  • 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://%20%20@j.mp/axasmwokdlaspdaksdodkasodkaos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
194a2c6cae25784aaa230f36b72b2fd6eb8cba3b7fcf1c34263c91e88daf9d80		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 591 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).

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