Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 4ef48d1dac8579e1…

MALICIOUS

RTF / .DOC

146.6 KB First seen: 2023-02-01
MD5: d0eea501bf9037576566cc57b6b5ae2c SHA-1: d48889f02d3336561cca429dae6190100456eb01 SHA-256: 4ef48d1dac8579e1ae4a39655a8b17aa2f7d327af0503a2bce77065d8bd8f73c
60 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data and uses an \objupdate directive, indicating an attempt to exploit a vulnerability when the document is opened. The specific exploit targeted is not clear from the available heuristics, but the presence of OLE object data strongly suggests a malicious intent to execute code. No document body text or scripts were extracted to provide further context.

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_off00000074.bin
411b870e891397c0a660d29944ce19b81d213119d0d2817fce853035b8bf5134
rtf-objdata-decoded RTF \objdata at offset 0x74 44043 bytes