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silverlight_x64.exe

Microsoft Silverlight

RICH MEDIA SYSTEMS INC.

The application silverlight_x64.exe by RICH MEDIA SYSTEMS INC has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from microsoft-silverlight.1800download.com and multiple other hosts.
Publisher:
RICH MEDIA SYSTEMS INC.  (signed and verified)

Product:
Microsoft Silverlight

Version:
1.0.0.0

MD5:
117e80de5a119ac7b9a98e50f7238a65

SHA-1:
8649e66c646670a6238e80a73ebf253ba3ec9b46

SHA-256:
ebf7f7ad744cb2838af171799c2049c9604e48e29f4b49d4d536a5b302aca1b2

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
12/26/2024 1:33:55 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.RICHMEDIASYSTEMS.Installer (M)
15.12.14.18

File size:
415.7 KB (425,664 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

Common path:
C:\users\{user}\downloads\silverlight_x64.exe

Digital Signature
Signed by:
RICH MEDIA SYSTEMS INC.

Authority:
Symantec Corporation

Valid from:
2/17/2015 1:00:00 AM

Valid to:
2/18/2016 12:59:59 AM

Subject:
CN=RICH MEDIA SYSTEMS INC., O=RICH MEDIA SYSTEMS INC., L=HENDERSON, S=Nevada, C=US

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
3F87144C25AF8BCF29F29C5A1FEEF4BA

File PE Metadata
Compilation timestamp:
5/20/2013 1:53:00 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:Diu5c48RaRFMKX2woM/mWyaI8tKAOGqI7BE2rnV0P9:N5eRaQKX2C/mWpIAOGtlE2ril

Entry address:
0x331C

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, 30, 92, 40, 00, 89, 6C, 24, 14, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, BC, 70, 40, 00, 55, FF, 15, AC, 72, 40, 00, 6A, 08, A3, 98, 92, 42, 00, E8, A8, 2E, 00, 00, A3, E4, 91, 42, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, 90, 06, 42, 00, FF, 15, 7C, 71, 40, 00, 68, 7C, 93, 40, 00, 68, E0, 81, 42, 00, E8, 13, 2B, 00, 00, FF, 15, 34, 71, 40, 00, BB, 00, 40, 43, 00, 50, 53, E8, 01, 2B, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
24 KB (24,576 bytes)

The file silverlight_x64.exe has been seen being distributed by the following 9 URLs.

http://microsoft-silverlight.1800download.com/get_azure_file/wUiS4WnYccXEwj 8WvauHEA0kxQ8PDK1Ghj1cteQv E8/yG6sGMxwdoEP0b1Y/.../kxdYHGSjrFAn3q572zEwvPHjW5ykG1prZN3i6AhiD3KU4KhD7mA==

http://microsoft-silverlight.pt.1800download.com/get_azure_file/wUiS4WnYccXGwj 8XPavWwllklY/NSrkQUS0NZ6P7LRuqQq2pGxsnpNbP0ykYrn2LSz/0l8bOGSGCa7 RuFohPpyz4WXBAaDpnasHk20snm1mfbSvNKbm2BBs9Vp10dJF3yjACxxkMst7CC5UGGTUvgY2syiPTYNerggJFsFMKXlFSMrasWXLBoqh LuEyYvatGrkq1pXyD/8Abdl7xmBpO3Yp/.../bhD7mA==

http://microsoft-silverlight.1800download.com/get_azure_file/wUiS4WnYccXBwj sXP7oQkEsnl0kPTqiGh/ycteQv E8/zq9sGMxwdwEPwC Nu jeDCuyxdSMWmeQrDzCr50ybtq1sWeFQfS9SnyHhCo5C/qyefa7dPbm3FJoZIiiBZIVXatGGos14N1r2K/GD LS/9WysbrJWpeO/ttbEdZd7K0DyY5LYySf0x6yLPvUSwjcpenma1sTDyouQPFnftuA5G6eMSsaXof1cK3D6p9yw8etIL8hVO7ZKl/hWz/.../SWvtt5mUiCdjbbJJV9JkZSoxu6GtHBNrnFXpi5sRUXC4UVW3zNLiwxFwdifWsyke39PBdDa6TgLXifBtaBD7mA==

http://microsoft-silverlight.1800download.com/get_azure_file/wUiS4WnYccXBwj pXP7oQlssmV89fDKhEgqnKJyK97Yk5jz0o2xwzNIMKULmbLC/NXG20hAcIGjPEeitCrQlyPpqwMyPUVXNqj3zT0z2sXGtyKyN6IyazToc dFfy1NGSiPvXyx 18kv9DmsBT/NFf5Ow4TrND0Vark1PRNMOa73XGgrIY2OekpryeO4AC1mcofz2/.../hS lEcQe5MSxUTmw54Ob2SYkbaRHQYw5K3RguuGtD1w42gS7lNdCGT7jBAjxpJr2zEwvPHjW5ykG1prZN3i6AhiD3KU4KhD7mA==

http://microsoft-silverlight.pl.1800download.com/get_azure_file/wUiS4WnYccXAwj uQbjxCggnkkU3LTPkEhv4cp K4fE9tG//qmMxwdoOJ1WzMfi8YyL1hRYEIGjPEeumEqdqmuoim4XCUUiMvHakShO15CLo07HDpZrSkmlZ4cxkkV4BXnKtGDpxnMc79WjwWWmLBuUI2syiPTENerswKhoIM738FXB8ctyXf08wh LuECw3e4bg2q4/CGOo5xKPxb05FpnkesOqbXlf2MK H 4v3BcT55qr0gSsO hnnG sAMVP7Me8UXKquZOaiHNjdb0AT4M3Kzh67rb4WllzhVW609dWRXW9Ux/.../j9WgYCEaDbHDUfZlq83PBD7mA==

http://microsoft-silverlight.pl.1800download.com/get_azure_file/wUiS4WnYccXBwj pXP7oQlssmV89fDKkEgqyOYjBvqA86W/spmx6z8kFbk3maLHuayr/gAgJeybOR/usW781wrNymZ/ORVPSoHm8EQWu5D3qyamI YGcg2gIq5M6kQAKFC/lXyx zcko inyWWCaQ7pdw4TrNT0VLP0gJFsFMqXlV2h0O8TNLAl71fX2GWUveo/g0u4nBSqwtFDdyqAwUMf/YsntZXJWzcO9Gvsv3BcX55qizkrzLaBynT7hWpEJsYD4UXKquZKaiGp5M6RIBo47M20hsuelGhpzhVW609dWRXW9Ux/.../j9WgYCEaDbHDUfZlq83PBD7mA==

http://microsoft-silverlight.1800download.com/get_azure_file/wUiS4WnYccXDyCf4UfO5CV530RJ0YyqsWxLwYdbB6Lplrzq9/T421phXcQGyKuelaCv40l8bOGWGCbzvWOx1lqtrncycAw6Z/Sb6Dk71szi1jf/D IaExTYJs55ziVZIRnSnDSx 18kq9Dm8AzeLS/9Wzs3zNTUCar4yPRNMOaz9RDkmLNzFfxEjhKqnGCQvasG2w Z2BGiwoFvdl7xmB5ivMJv6fXof1cW3D 0glxkH5sv3jlLqN/MhhSflCc1X/MS4UXKquZOaiHNjdb0AT4M3Kzh67rb4WllzhVW609dWRXW9Ux/.../j9WgYCEaDbHDUfZlq83PBD7mA==

http://www.microsoft.com/getsilverlight/.../getsilverlight.ashx

http://microsoft-silverlight.1800download.com/get_azure_file/wUiS4WnYccXGwj 8XPavWwllklY/NSrkQUS0NZ6P7LRuqQq2pGxsnpNbP0ykYrj2LSrllEZTcWmOEfukG6c8gLNjztTeXliD9HbyDU78 3G5geeE5pmB0zZZqsw6glFAXHShAj51lshq9CjwSCPAFK5Xi83lPSUDbLE2PRNMOaz9RDwmLNzFZREkhrPmECMnf4Xg2q4/.../Yzwm76WpgFqtWwAHPvuYPGxXB0MvRRTsc3OnUxsuKgDxEihBS6xZkAASeiDAz5sZv2zEwvPHjW5ykG1prZN3i6AhiD3KU4KhD7mA==

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