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

Static analysis result for SHA-256 71412027c3b5c6b2…

MALICIOUS

Office (OLE) / .DOC

1.17 MB Created: 2020-10-13 17:13:00 Authoring application: Microsoft Office Word
MD5: a6e6fddbc42409c5a0a3dee8e84d6f2a SHA-1: 6e0a27833a3d429a98b887e575263b05f3665e61 SHA-256: 71412027c3b5c6b27d4d22b43dd073bca949af7b5731d7f44c2f9406801d13fe
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1140 Deobfuscate or Obfuscate Malicious Text and Code

The sample contains VBA macros and references to ShellExecute and WScript, indicating it's designed to execute code. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' strongly suggests the document's purpose is to instruct the user to open a password-protected archive, a common tactic to evade security controls. The VBA macro code, while partially truncated, appears to be part of a larger control or script, potentially for downloading or executing further stages.

Heuristics 6

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=6077&lngWId=1
    • http://www.allapi.net
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
82c5dc30d90829d30eb49ce99ec3274abae83af7570fc7eaa33c2a0d687fc3db		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 532294 bytes

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