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

Static analysis result for SHA-256 810f9852ae5a0468…

MALICIOUS

Office (OLE)

176.5 KB Created: 2010-05-20 12:04:00 Authoring application: Microsoft Word 8.0
MD5: edacc307a7064cfa7c62503bdccbf3bc SHA-1: db4cf42697fb843744adb108186af12db848c97b SHA-256: 810f9852ae5a0468bf69e2a4ef72e9404b378abaecc13dec40d89973eb6d9136
260 Risk Score

Malware Insights

Doc.Trojan.Xaler-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Xaler-1. Static analysis detected the presence of VBA macros, specifically triggering AutoOpen and Document_Open events, indicating an attempt to execute code upon opening the document. The extracted artifact 'macros.bas' suggests obfuscated VBA code was present. The document body, presented as a report on administrative procedures, serves as a lure to encourage macro execution.

Heuristics 6

  • 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.
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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
ed325a5891525895217dda27892ca4b137baa7e63dade126be0dec94e2aeeee1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 254654 bytes
Detection
ClamAV: Doc.Trojan.Xaler-1
Obfuscation or payload: likely
Carved artifact contains 10 Chr/ChrW string-construction calls.