Malicious RTF — malware analysis report

Static analysis result for SHA-256 aa849c65e375d11a…

MALICIOUS

RTF

7.8 KB
MD5: 85392423b0a7d2c9f2a201a2fd7ffdfa SHA-1: f4ac97c63a391e065019f94413961bf2789a7ca0 SHA-256: aa849c65e375d11ab7f79978ac1fdf6b0b8b972286d4c2311cae4f0716c63e1b
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is an RTF document that contains embedded OLE object data, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this embedded object is designed to be activated, likely leading to the execution of malicious code. While no specific script was extracted, the presence of OLE object data strongly implies an attempt to download and execute a secondary payload, a common technique for malware delivery.

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_off0000089e.bin
54deaa1e2474a1e6c10b74fc1be3f776f76238c82a336749c0fc877a9bc67035
rtf-objdata-decoded RTF \objdata at offset 0x89E 2166 bytes