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

Static analysis result for SHA-256 48238c74ec39aa20…

MALICIOUS

Office (OLE) / .DOC

210.5 KB Created: 2010-04-11 05:37:00 Authoring application: Microsoft Word 8.0
MD5: 8e326290313befa8bbaba1a93fe3516f SHA-1: 4a5ba34dca25c43f268ded30abdd0f632b01dd59 SHA-256: 48238c74ec39aa20ee9e6dcb7ead95abb7067ce4dd9b1ee9ea18ee0dd526eafb
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File

The file is a malicious Microsoft Word document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. ClamAV signatures identify it as Doc.Trojan.Xaler-1. The document body presents a seemingly legitimate business report, likely to trick the user into enabling macros. The presence of a Document_Open macro strongly suggests the intent is to execute malicious code upon opening, likely to download and run a secondary 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
1cbc462dcca3c27173fc45d24240401a5b3cfb815952dda49f8b579961e67218
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.