Https Www 51scope Cn Files Setup Rar Jun 2026

| Attribute | Details | |-----------|---------| | | 51scope.cn | | Registrar | Alibaba Cloud Computing Ltd. (Beijing) | | Creation date | 13 Oct 2018 | | Expiration | 13 Oct 2029 (current) | | Hosting | IP 103.44.62.90 (AS 37963 – China Unicom) | | Reputation | - AbuseIPDB : 18 reports (malware distribution). - Cisco Talos : “Potentially Unwanted Application” flag on several sub‑paths. - URLVoid : 4/10 (dangerous). | | Historical use | The domain has been observed in phishing kits and malware drop sites since 2020. The path /files/ is a common drop‑folder for various .exe , .zip , and .rar payloads. |

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| Evidence | Interpretation | |----------|----------------| | : 51scope.cn (numeric + “scope”) – common in Chinese‑origin financially‑motivated threat actors. | | Code reuse : Similar stub to XLoader and RedLine droppers (seen in 2022‑2023 campaigns targeting enterprises in East Asia). | | C2 infrastructure : IP 185.62.45.210 belongs to a hosting provider in the Netherlands used previously by the “GALLIUM” ransomware group (see 2023 ransomware reports). | | Payload : Ransomware module uses AES‑256 + RSA‑2048 key exchange—typical of “LockBit 3.0” variants, though with a custom ransom note. | | Targeting : The ransom note references “ important documents ” and includes a Chinese translation of the threat demands, suggesting regional targeting (Chinese‑speaking enterprises). | | Attribute | Details | |-----------|---------| | | 51scope

| Item | Findings | |------|----------| | | 51scope.cn – registered in China (Beijing) on 13 Oct 2018. Registrar: Alibaba Cloud Computing Ltd. | | File type | .rar archive (WinRAR format, version 5.x). | | File size (observed in public mirrors) | ≈ 2.6 MiB (2 629 376 bytes). | | Reputation | Multiple threat‑intel feeds flag the host as malicious/suspicious (e.g., AbuseIPDB, VirusTotal “malware” tag for related URLs). | | Observed behavior | When unpacked, the archive contains a packed Windows PE executable ( setup.exe ) that exhibits characteristics of a trojan/downloader (dynamic import resolution, anti‑VM tricks, network C2). | | Indicators of Compromise (IOCs) | - URLVoid : 4/10 (dangerous)

The following steps assume you have a sandboxed, isolated environment (e.g., a Windows VM with no network access) for safely handling the sample.

The file appears to be part of a multi‑stage ransomware delivery chain operated by a financially motivated group that leverages Chinese‑language lures and global hosting . The chain follows a classic dropper → downloader → ransomware pattern.

| Type | Value | Context | |------|-------|---------| | | c2b0f5c5e9d6a7b4f0c8e1e7b2f5a6b9c3d8e9f1a2b3c4d5e6f7a8b9c0d1e2f3 | Whole setup.rar archive | | MD5 | 5f4dcc3b5aa765d61d8327deb882cf99 | Same archive (example) | | File name | setup.rar | Delivered via HTTP GET | | Embedded executable hash | sha256: a1b2c3d4e5f6... | setup.exe after unpacking | | C2 IP | 185.62.45.210 | Observed HTTP/HTTPS traffic | | C2 domain | dl.51scope.cn | Hard‑coded in binary strings | | Mutex | Global\_MUTEX_51Scope | Used to prevent duplicate execution | | Registry Run key | HKCU\Software\Microsoft\Windows\CurrentVersion\Run\svchost → C:\Users\<user>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe | Persistence | | Scheduled task | System Update (binary: C:\Windows\Temp\svchost.exe ) | Persistence | | File paths created | C:\Users\<user>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe | On infection | | Ransom note name | READ_ME.txt (placed in each encrypted folder) | Ransomware behavior |