Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 d0481cc270efd488…

MALICIOUS

RTF / .DOC

513.6 KB
MD5: 6ebd151b1a37761336dd8e064ed8d365 SHA-1: a86119e2cbc335eb1075330b7f20b60dd1263e98 SHA-256: d0481cc270efd488b2366bf1273284e5bbcff6d789dbfca69f44326c50891b15
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The RTF document contains embedded OLE objects and uses an \objupdate directive, indicating an attempt to execute embedded content. The document body provides a lure related to financial auditing, instructing the user to 'click Enable editing', which is a common tactic to bypass macro security. The presence of \objdata and \objupdate heuristics strongly suggests the execution of embedded malicious code, likely a downloader or dropper, to further compromise the system.

Heuristics 4

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00030452.bin
466234e6f8506bbf22ae404e6beee101a8951b52d09b7f6576b4dc284df433e5
rtf-objdata-decoded RTF \objdata at offset 0x30452 1586 bytes