Xls.Malware.Sload-7135989-0 RTF malware analysis — malicious · e9c895b7bda8d737

MALICIOUS

RTF

790.2 KB Created: 2018-07-17 14:08:00 First seen: 2018-11-13

MD5: 50564f7bfdbe6f4c7801b67c3a31cfde SHA-1: bb3b8669e9dce26e970bff6aebf475cab91fb106 SHA-256: e9c895b7bda8d7378c8ac46965fe8038541d02f285a8d0b47fd3cb94f6ed4e84

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: `407f214d557abc799d9365678276789573849bf91f059fb06a0acb0d96b4bfff`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_01_off000168e1.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x168E1	27195 bytes
SHA-256: `90022147e16ef572edf0e78cbdd24b3db2798138a9917d836faee46a4eeeab1d`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_02_off00029597.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x29597	27195 bytes
SHA-256: `cc50621ca7041bd0689cae8680bda6db324605ff72124db37a1b6133674ff5a4`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_03_off0003c24d.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C24D	27195 bytes
SHA-256: `83f4ba3a7451b46ec9663708eba7823721ef783e0146f590076cc20aae0b32a2`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_04_off0004ef03.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x4EF03	27195 bytes
SHA-256: `c57504c0c1746172bf61594fdc6645151d506fb6af961beceacc54bc259ab3fb`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_05_off00062986.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x62986	27195 bytes
SHA-256: `5414ffd2773d2c2e0f2c03ee3d65cf8795284bdf6e536db5720ef6d6607922fb`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_06_off0007565b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x7565B	27195 bytes
SHA-256: `803809858fc37944fea23525b100502ec87a39e4284e1c26ab538d5d99f1c2b6`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_07_off00088332.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x88332	27195 bytes
SHA-256: `6d7bcb01b52cc49d30c11d61ac244ac9cdf617bcea14a70476c6d7d7680bd049`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_08_off0009b009.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x9B009	27195 bytes
SHA-256: `c4f3244942c682eb2a5c4acd014a5cd63bb2e7441daa900d726fecfc71f2d1d7`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_09_off000adce0.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xADCE0	27195 bytes
SHA-256: `f3a3087fa4795863226c4df60f864276570667d67c7259d2f806bb43834d7203`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely

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