Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0bb868162a4b31e7…

MALICIOUS

Office (OLE)

43.0 KB Created: 2007-07-24 05:33:00 Authoring application: Microsoft Office Word
MD5: 581d67941eb45a5aec8b86dbfe25aa9e SHA-1: 554532b9dce82ec743fae427f08f4873052acdc0 SHA-256: 0bb868162a4b31e7fd03dc64f72d1be529e5c47d5986232cbce67a8c2e368b36
180 Risk Score

Malware Insights

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

The sample is a malicious Office document containing VBA macros, specifically an AutoOpen macro, which is a common technique for initial execution. The embedded VBA script attempts to export itself to 'c:\xix.drv', indicating a payload staging or execution attempt. The ClamAV detections 'Win.Trojan.Pivis-2' and 'Doc.Trojan.Vmpc-1' further confirm its malicious nature.

Heuristics 4

  • ClamAV: Win.Trojan.Pivis-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Pivis-2
  • 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
  • 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
b486f85d7f75d934ce84eaa4f19396a478c5ed34caded256990eee4f4a148aee		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3639 bytes
Detection
ClamAV: Doc.Trojan.Vmpc-1
Obfuscation or payload: unlikely

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