Xls.Malware.Sload-7135989-0 RTF malware analysis — malicious · d212a6d9aad594f5

MALICIOUS

RTF

750.3 KB Created: 2018-07-13 12:26:00 First seen: 2018-07-23

MD5: 468e125242b464af3a64841bbd0a3ae0 SHA-1: afa19beb1236094d2f00e243d7bad3422969b8b0 SHA-256: d212a6d9aad594f502753d1db441ddd5d1610f903a82f94107030853a2101622

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_off00003c43.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C43	25147 bytes
SHA-256: `77d5a22b1ccc63c5816ff6fd7aa7c08b67b7374e4216fef0e37ac9695f0f3288`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_01_off000158fe.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x158FE	25147 bytes
SHA-256: `897a7f2fd06b6387a17db4523a8449fa61809acc3b2d7838843ccc344e03e4f4`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_02_off000275b9.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x275B9	25147 bytes
SHA-256: `30f14b21aea7e023f7a394913fad1ded4b297127344ae7bcf477fd0d5ce049a2`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_03_off00039274.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x39274	25147 bytes
SHA-256: `0273c6c919e532b5a11541e4a16bf61ccbff9a0dc07ea0345468f2f34755a5c7`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_04_off0004af2f.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x4AF2F	25147 bytes
SHA-256: `3da9864fa936dd918a95ae6e985b42028b8750a6c7bb3ea86fd64e6e5a7a207f`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_05_off0005d9c1.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x5D9C1	25147 bytes
SHA-256: `733275d77a808cc86291ca66c3d42ff25d324fa88c621d3ce2ad9ce3657af251`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_06_off0006f69b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x6F69B	25147 bytes
SHA-256: `82d0b04615ad86d7328161ada9b2d9ade27dfda6c36116d8314843b7d2c09756`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_07_off00081377.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x81377	25147 bytes
SHA-256: `838d954f5c237989fcb8fe113a0a3e1019b90ede9cabd7885927b9dd453bae9e`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_08_off00093053.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x93053	25147 bytes
SHA-256: `f8a701bc0b9b82508f9b7b952ec5bc325962b541cfdbe2cec8d53c46b77fd84d`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely
`objdata_09_off000a4d2f.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xA4D2F	25147 bytes
SHA-256: `dca3cec9918b33f4a37e36775e1ccb9c2348807108bb0b2743f6fa54b3c320c5`
Detection ClamAV: Xls.Malware.Sload-7135989-0 Obfuscation or payload: unlikely

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