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

Static analysis result for SHA-256 366229e6c47b090b…

MALICIOUS

Office (OLE)

182.0 KB Created: 2009-04-14 10:17:00 Authoring application: Microsoft Word 9.0
MD5: a87608881202b0a1ee500e2256b2b1a3 SHA-1: f6a38e07b95bb3eac8a9fccb149edf04404a1f36 SHA-256: 366229e6c47b090b8eeff70d60bf4a87f7beb12e4b35c6d8793782c9e5cd3ea9
220 Risk Score

Malware Insights

Doc.Trojan.Xaler-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Xaler-1. Static analysis detected VBA macros, specifically a Document_Open macro, and an embedded artifact named 'macros.bas'. The presence of VBA macros and the ClamAV detection strongly suggest this document is a trojan designed to execute malicious code. The embedded 'macros.bas' file is likely the source of this malicious behavior, potentially downloading and executing a second-stage payload.

Heuristics 5

  • 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
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
59f28deaeaaa55d4166fa0ff391e033c50ab8e246f7bb8ac2dd5ac71ad96161c
vba-macro oletools.olevba.extract_macros (decoded VBA source) 68293 bytes
Detection
ClamAV: Doc.Trojan.Xaler-1
Obfuscation or payload: likely
Carved artifact contains 10 Chr/ChrW string-construction calls.