Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 5a871295622bea32…

MALICIOUS

RTF / .DOC

2.9 KB First seen: 2023-04-30
MD5: 3b120e2245eeede053155207120d4d76 SHA-1: 4e1606e260b98972ebd7c3ff78c0f4bde59a3b80 SHA-256: 5a871295622bea32691842566b766735dd3b5db7b6afa599f0ecfdf951b05657
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains an embedded OLE object, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is designed to be automatically activated upon opening, which is a common technique for exploiting vulnerabilities in older versions of Microsoft Office. The specific exploit targeted is not identifiable from the provided evidence, but the intent is likely to download and execute a malicious payload.

Heuristics 2

  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000008b.bin
7d7954879639ed0ec9f3651b467780452fca78d047a4010edc891c69f4e17c2b
rtf-objdata-decoded RTF \objdata at offset 0x8B 1367 bytes