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

Static analysis result for SHA-256 027c6eff88fad908…

MALICIOUS

Office (OLE) / .DOC

225.0 KB Created: 2018-06-29 21:57:00 Authoring application: Microsoft Office Word
MD5: b6460ab2cb5a3466924d6eb6ea3b7a3c SHA-1: e974f47684c2b7555f2ee85d48003588b1cce8e7 SHA-256: 027c6eff88fad90897f116eb96b21980bdf0d89f36f72df4960726e3334331c6
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1204.002 Malicious File

The sample is a malicious Office document containing VBA macros. The AutoOpen macro triggers a Shell() call, which is highly indicative of downloading and executing a second-stage payload. The ClamAV detection name 'Doc.Malware.Powload-6797938-0' further supports its malicious nature and suggests a potential PowerShell-based downloader.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Malware.Powload-6797938-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Powload-6797938-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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
  • 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
4e227dd24e66e02fe0fb3e5e0b8aac11ef2390153ab7926dee403fefad3a3044
vba-macro oletools.olevba.extract_macros (decoded VBA source) 11938 bytes