Xls.Malware.Sload-7135989-0 RTF malware analysis — malicious · 215b7156548f04cf

MALICIOUS

RTF

789.6 KB Created: 2018-07-17 14:06:00 First seen: 2019-05-31

MD5: a07d5ac32e1950e6033ec13a7e1c3af7 SHA-1: 880e74d8405a32bc00d3aabdb5460514c82b9de8 SHA-256: 215b7156548f04cf40c722189be95273d93e2cf8c53c396acca9ac94daf851ef

242 Risk Score

Malware Insights

Xls.Malware.Sload-7135989-0 · confidence 95%

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains multiple OLE objects, with heuristics indicating ".objupdate" forces OLE activation and the presence of Composite Monikers. ClamAV signatures identify the embedded content as Xls.Malware.Sload-7135989-0, suggesting an exploit targeting spreadsheet functionality. The primary attack vector is likely spearphishing, with the embedded OLE object serving as the malicious payload.

Heuristics 6

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.
ClamAV: Xls.Malware.Sload-7135989-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Sload-7135989-0
\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 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://schemas.microsoft.com/office/word/2003/wordml In RTF body

Extracted artifacts 10

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00003c2b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C2B	27195 bytes
SHA-256: `bd055ba0d436209073dd07221314034cfad7e4a31f866c42493a50dc23f5dee5`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_01_off00016897.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x16897	27195 bytes
SHA-256: `8ae8db2aaea5063a4f9c504d0b09251112fbf70886847145e6127e2696cc41bc`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_02_off00029503.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x29503	27195 bytes
SHA-256: `9437eb5e9b0000ce1b64e65e52e86c91d3dfa270efa6c628bfadf41545b5473a`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_03_off0003c16f.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C16F	27195 bytes
SHA-256: `3c20494fe84a6497b602715fcdc94db01e676fdc019aa640126c51fe080aacb3`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_04_off0004eddb.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x4EDDB	27195 bytes
SHA-256: `d143e478a6140a38edd18947dc51ca5a1f2805cb92ba25c8645a7ce78de0da69`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_05_off00062857.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x62857	27195 bytes
SHA-256: `cc0349a2a4bf362ed4175af0d586789d68793331b9ef022f023dd8ea4f82ff5a`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_06_off000754e2.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x754E2	27195 bytes
SHA-256: `2c0c04e7452b29cf29fc640d9b5e0c0b9e78069bec7f343eeb8f782994455d09`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_07_off0008816f.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x8816F	27195 bytes
SHA-256: `2e49e7938b7751c36d08291dd720307b34f8f2b8d03694b48b2444f34570c08a`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_08_off0009adfc.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x9ADFC	27195 bytes
SHA-256: `b488e494eadb316916fcff31e4de977a2418336d98ad6a4cdcd4514d87781b5c`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_09_off000ada89.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xADA89	27195 bytes
SHA-256: `69ece0be78a02d652e190069b2c6aca5c246fe419a3c1d202844c5a0e5c69276`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely

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