Doc.Trojan.Xaler-1 — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 0114f5431d4e6bbb…

MALICIOUS

Office (OLE) / .DOC

159.5 KB Created: 2010-04-15 03:26:00 Authoring application: Microsoft Word 8.0
MD5: 5392f8d60c1c9246a5752a8a795eec23 SHA-1: 6e2b74146f93c07f7b17acf0dd5821b25a5c6759 SHA-256: 0114f5431d4e6bbba59c74b69c0bd33edebca0fe7889a2164a311afa82ee0521
180 Risk Score

Malware Insights

Doc.Trojan.Xaler-1 · confidence 95%

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample is a malicious Word document containing a VBA macro that is automatically executed via the Document_Open subroutine. The macro attempts to export its own code to a temporary file and then re-inject it into the Normal template or the active document, potentially to establish persistence or modify behavior. The ClamAV detection name 'Doc.Trojan.Xaler-1' strongly suggests this family and its typical behavior of downloading and executing further stages.

Heuristics 4

  • ClamAV: Doc.Trojan.Xaler-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Xaler-1
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
f5cd198ab60e51628a6cde2e2a459cdd6e1f32021449237078e43d04b13ee809		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 249152 bytes
Detection
ClamAV: Doc.Trojan.Xaler-1
Obfuscation or payload: unlikely

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