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

Static analysis result for SHA-256 b30a7b1ed68638e6…

MALICIOUS

Office (OLE) / .DOC

2.04 MB Created: 2010-05-04 09:54:00 Authoring application: Microsoft Office Word
MD5: 1f7231469e9e775f11d9cfedbddc58bd SHA-1: bc1057f4b000663d4398a95b67f90030e3a671b8 SHA-256: b30a7b1ed68638e6faa1cde48d5c846594a6a2a0bcfbec57e5233f9afbef6c4a
220 Risk Score

Malware Insights

Doc.Trojan.Xaler-1 · confidence 95%

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

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, which is a common technique for executing malicious code upon opening the document. The presence of 'macros.bas' and the 'OLE_VBA_MACROS' heuristic confirms the macro-based nature of the threat. The likely intent is to download and execute a second-stage payload, as indicated by the critical heuristic 'EXTRACTED_FILE_STATIC_TRIAGE' which flagged VBA Chr string obfuscation.

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
878b385250756e10e4959d16a2d6565b923488ec83681eb29ed93bc93500c2f1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 242338 bytes
Detection
ClamAV: Doc.Trojan.Xaler-1
Obfuscation or payload: likely
Carved artifact contains 10 Chr/ChrW string-construction calls.