Xls.Malware.Sload-7135989-0 RTF malware analysis — malicious · 6daecd02c801840d

MALICIOUS

RTF

740.9 KB Created: 2018-05-07 07:59:00 First seen: 2018-06-30

MD5: 36d7acb7eb7269372bf497cf938a3cbb SHA-1: 0044c9c30ec7f7adc93e1ef95908be695638b71b SHA-256: 6daecd02c801840d6731b00166d6f18874118bf396893b93bba97ef72bad69ed

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: Doc.Dropper.Agent-6412232-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Agent-6412232-1
\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_off0000291a.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x291A	25147 bytes
SHA-256: `c4400aff44cdb8a862a8bd1278559d1edc99500176c94bd08cc8312687b4c31c`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_01_off00014504.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x14504	25147 bytes
SHA-256: `f4d676bc99bc176aff58cf6812182bb3671ca104fcd8fb52afe5b7bc3ef53784`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_02_off0002616a.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x2616A	25147 bytes
SHA-256: `4621338ba4ce7b5e8fda1d706f154f13ac9aac0d5db7b5788887acb5288616b8`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_03_off00037dd2.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x37DD2	25147 bytes
SHA-256: `5fb4519896b62fa6656088b5d455e551827d1a11f9fbeca1aa5cfcc4b60863df`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_04_off00049a3a.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x49A3A	25147 bytes
SHA-256: `58523cb838ee632272235575de97fd06555d4c3dbfb00c95a1b24753633829e7`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_05_off0005b6a2.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x5B6A2	25147 bytes
SHA-256: `7c24b3510b3eb949ac8584ce13ebba5cea3c42374f86ecbbf2d7317d6ba85c76`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_06_off0006d30a.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x6D30A	25147 bytes
SHA-256: `f9f8c76e335f60460785fb79509f2c68c5ea2337afb73f1f7eb4f2a95def5cf0`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_07_off0007ef72.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x7EF72	25147 bytes
SHA-256: `47cc5aa6e0424515918c7184808672ccce9a8cf36cbb0dac2c84acd6c584f4ed`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_08_off00090bda.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x90BDA	25147 bytes
SHA-256: `1ab7dab087557318ce4c8661f8322c82ce40b3fa55e8ad6fd4021c76d7c28b2b`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely
`objdata_09_off000a2842.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xA2842	25147 bytes
SHA-256: `b60cf99c3afbbe194049e10000f82ec6e8bbc20396dddc4a2570e7802822ec89`
Detection ClamAV: Doc.Dropper.Agent-6412232-1 Obfuscation or payload: unlikely

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