RTF malware analysis — malicious · bbe8d4f57f896b96

MALICIOUS

RTF

856.6 KB Created: 2017-08-08 15:25:00 First seen: 2017-08-27

MD5: 41629255faedccbcb3bc9137cf51de00 SHA-1: d9b448364c0fe4a4a88fe432e694d5e56746ccf7 SHA-256: bbe8d4f57f896b96cb2f1c147afdf4bd50277d436bb68c03216547bdc9d88b7a

182 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains multiple embedded OLE objects and triggers the \objupdate directive, indicating an attempt to activate them. The critical heuristic firing for CVE-2017-8759 confirms exploitation of this vulnerability for OLE activation. The embedded URL points to a suspicious executable, suggesting the exploit is used to download and run a second-stage payload.

Heuristics 6

CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759

RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
\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.
Suspicious extracted artifact high 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.
OLE object data medium RTF_OBJDATA

RTF contains 10 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://jasadoa.co.id/2222222222222money.exe In RTF body
- http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 10

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000028c3.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x28C3	30254 bytes
SHA-256: `2c25856bb353fae9eb7ff78083548a58f0a84d810536fa211ee75d56be20c546`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_01_off00016cef.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x16CEF	30254 bytes
SHA-256: `ba023265ea848b2cc30cf143b5472706f25dae61ae029a0e9640466645bd65e1`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_02_off0002b11b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x2B11B	30254 bytes
SHA-256: `25021e3dde65ed4d7ffb66b9a541ba55af32d95bda95766bb96ee2e15970aebd`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_03_off0003f547.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3F547	30254 bytes
SHA-256: `7c9ed3c3929698e6663440bc0f55fa529185604ab45617b06147c6058f620c47`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_04_off00053973.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x53973	38446 bytes
SHA-256: `3f273295700672293212fae5bd5fea82e4bda0f677f705d03aca495e26b0df89`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_05_off0006be21.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x6BE21	30254 bytes
SHA-256: `ff4681a86df7dc854bb526cfee1687fc0d6840fd3ea731bdb7b0af6cbc9ed25a`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_06_off0008024d.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x8024D	30254 bytes
SHA-256: `8fa7f90eb603a41236746eaed6684b4e8f391ccb887d7e618198b11f2d7772e4`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_07_off00094679.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x94679	30254 bytes
SHA-256: `df3003cf9a79ca291f11720f0ad79e0a537042e0b2011c13bc01a23866596eb4`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_08_off000a8aa5.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xA8AA5	30254 bytes
SHA-256: `fe0c1964eb7e6765d6c102bedf2f50202d6dd92bdbc1242c05738bc18b402946`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`objdata_09_off000bced1.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xBCED1	30254 bytes
SHA-256: `5e8e5333c2999a7832431d4ad1c667adbbe5de3c92c3cf09cf3057634c700035`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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