RTF malware analysis — malicious · 2351c7c8a183c7f0

MALICIOUS

RTF

217.4 KB First seen: 2022-04-14

MD5: 3d77429f066efd067a7cda6019ced188 SHA-1: f619a46dc55f73160c868059d690ac4336d53b78 SHA-256: 2351c7c8a183c7f0f6d9514d206e3d9e3423193011c47e9fabe07b70c604027e

154 Risk Score

Malware Insights

MITRE ATT&CK

T1559.001 Component Object Model Hijacking T1204.002 Malicious File

The RTF file contains multiple OLE objects, with specific heuristics indicating the use of \objdata and \objupdate to force OLE activation. This suggests the file is designed to exploit vulnerabilities related to OLE object handling, likely to execute embedded malicious code. The extracted artifacts are named based on their offset within the RTF structure.

Heuristics 5

Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED

RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
\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 3 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000007d2.bin` `1deb20ecb72717e0f83e55cdc4ff7c462564ad102fa60f28d0eb267c56e7db3d`	rtf-objdata-decoded	RTF \objdata at offset 0x7D2	15670 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off000087c2.bin` `36dcadcd9dba6c796320cf103eee4d99a0cf65218f74bac40d0f472a6487a1f8`	rtf-objdata-decoded	RTF \objdata at offset 0x87C2	2632 bytes
`objdata_02_off00009d65.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x9D65	12297 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.