Xls.Malware.Sload-7135989-0 RTF malware analysis — malicious · 96565776d0edb59a

MALICIOUS

RTF

789.5 KB Created: 2018-07-17 14:10:00 First seen: 2019-08-04

MD5: 920c55a53d060cefe1bed02a6e154171 SHA-1: 41388b663302316319f0cfd98cd4f0955ae7df08 SHA-256: 96565776d0edb59a67c1a75b8f80f2797df405eeaacc9022fa7dc708905f3a7d

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_off00003c00.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C00	27195 bytes
SHA-256: `fc1cca3a650aaa3d7706638fa3089099b99fdbcb29eceafbafbc4b140b95eb1f`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_01_off00016862.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x16862	27195 bytes
SHA-256: `f5c3f6538ed2166e94c7d3b49c31d17737384dd0d697e1c5f913497aed9fd460`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_02_off000294c4.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x294C4	27195 bytes
SHA-256: `0d060f02fc15035a869f995ae236e5354e39559cbda89f0fdc14a532520a830a`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_03_off0003c126.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C126	27195 bytes
SHA-256: `717bb36c4f00b300c0de0fb8516bc1cdde48acf47c2059ba402ca7effdf04292`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_04_off0004ed88.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x4ED88	27195 bytes
SHA-256: `6d0411f2162ff965ffc603c06320994a67842cacbe6813bc88c0a235140716cb`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_05_off000627e2.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x627E2	27195 bytes
SHA-256: `617c729fa72ddab425930fdc60677d461d10a984be17f26b56e865fad6b8151c`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_06_off00075465.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x75465	27195 bytes
SHA-256: `32e77a3ade771751b7649f158f5c78f7f20c85c24ad113a56bd0699fa6717686`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_07_off000880ea.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x880EA	27195 bytes
SHA-256: `eefa039879317ecb993d2767ad86ac605b81392a50eb9476926bafa484ab04d7`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_08_off0009ad6f.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x9AD6F	27195 bytes
SHA-256: `0734f6a81aed77c45009b27599d989c28a5366959babba26503cbe75fb6491e2`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_09_off000ad9f4.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xAD9F4	27195 bytes
SHA-256: `41da3f4b4d1cee1a0d0afcc04347f65255f211cf57198ef30cea05f200ee92b3`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely

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