Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6e2bc32f48ec7890…

MALICIOUS

Office (OLE)

90.0 KB Created: 2008-06-10 14:25:00 Authoring application: Microsoft Word 11.4.2
MD5: 6ba0269066010480bc5b08eb70e7ed5c SHA-1: 852da64160e74998b3174766c900ca1d7a4cbaaa SHA-256: 6e2bc32f48ec789049112c69683e1a8f7b61c0ce873c15fcd9608cf5ecb46ecf
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer

The sample contains VBA macros that are designed to execute shell commands. Specifically, the macro attempts to download a file from the hardcoded IP address '209.201.88.110' to 'C:\hsf*.sys' and then writes FTP commands to 'c:\netldx.vxd' to upload this file. This indicates an attempt to download and execute a second-stage payload.

Heuristics 4

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Trojan.Marker-31 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-31
  • 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.
  • 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
b238000b5bbd0ad50302c3c2bbdbe919596ce1f141cc999bf20a414d9eb5bbff		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6398 bytes
Detection
ClamAV: Doc.Trojan.Marker-3
Obfuscation or payload: unlikely

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