Win.Trojan.Elpapok-1 RTF malware analysis — malicious · 3e8ff4f858000cd4

MALICIOUS

RTF

60.1 KB First seen: 2015-09-18

MD5: 5b34d404ad5e9ff0e0e8706ecee70840 SHA-1: ca402cd368c16097f069394258a95eae2cba23b1 SHA-256: 3e8ff4f858000cd43993e0247675cb852badb144258a9e57a0fa87d8d416fc2c

222 Risk Score

Malware Insights

Win.Trojan.Elpapok-1 · confidence 95%

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is identified as Win.Trojan.Elpapok-1 by ClamAV, indicating a known malicious family. Static analysis reveals references to CreateProcess and VirtualProtect APIs, along with an OLE object containing shellcode candidate regions. The presence of CVE-2012-0158 further confirms exploitation for client execution. While no explicit scripts were found, the RTF object data likely contains embedded shellcode designed to download and execute a secondary payload.

Heuristics 7

MSCOMCTL.ListView — CVE-2012-0158 high CVE related CVE_2012_0158

RTF \objdata decodes to OLE data containing the MSCOMCTL.ListView — CVE-2012-0158 CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
ClamAV: Win.Trojan.Elpapok-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Elpapok-1
Reference to CreateProcess API high SC_STR_CREATEPROCESS

Reference to CreateProcess API
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Reference to VirtualProtect API medium SC_STR_VIRTUALPROTECT

Reference to VirtualProtect API
OLE object data medium RTF_OBJDATA

RTF contains 1 \objdata section(s) — embedded OLE objects
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.openxmlformats.org/drawingml/2006/main In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000000a5.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xA5	5065 bytes
SHA-256: `b87604d31b44f23458f58049dc579a32586ad0d56f34dadbd5a024a2ca59de11`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL Static shellcode analysis recovered command string(s): cmd /c "Y_��gd�0

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