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lemurleap.purbrowse.exe

LemurLeap

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application lemurleap.purbrowse.exe by LemurLeap has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. While running, it connects to the Internet address install.lemurleap.info on port 80 using the HTTP protocol.
Publisher:
LemurLeap  (signed and verified)

MD5:
bfbdbecf7a2adbdf57294db85ce540f8

SHA-1:
9330f862ffb8d02a619a2edfeec97c565699f731

SHA-256:
cda052d191a4958e6900525c372af72c8a8378d114f844e11f43cc44c6f59493

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/19/2024 6:52:15 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.LemurLeap (M)
16.2.11.23

File size:
289.8 KB (296,736 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\lemurleap\bin\lemurleap.purbrowse.exe

Digital Signature
Signed by:
LemurLeap

Authority:
VeriSign, Inc.

Valid from:
8/13/2013 3:00:00 AM

Valid to:
8/14/2015 2:59:59 AM

Subject:
CN=LemurLeap, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=LemurLeap, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
59846B2F05AAAD396A7E942BF33F16B3

File PE Metadata
Compilation timestamp:
7/23/2015 7:34:48 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
10.0

CTPH (ssdeep):
6144:vUi0aRHUY1vjapGWCNp/G2H+tv0TBZvgKuJ:Mi0aRHUAjapGWCNp/G2H+tv0TPluJ

Entry address:
0x2163E

Entry point:
E8, 45, 84, 00, 00, E9, 95, FE, FF, FF, 8B, FF, 55, 8B, EC, 8B, 45, 08, 33, C9, 3B, 04, CD, 88, 34, 44, 00, 74, 13, 41, 83, F9, 2D, 72, F1, 8D, 48, ED, 83, F9, 11, 77, 0E, 6A, 0D, 58, 5D, C3, 8B, 04, CD, 8C, 34, 44, 00, 5D, C3, 05, 44, FF, FF, FF, 6A, 0E, 59, 3B, C8, 1B, C0, 23, C1, 83, C0, 08, 5D, C3, E8, F4, 51, 00, 00, 85, C0, 75, 06, B8, F0, 35, 44, 00, C3, 83, C0, 08, C3, E8, E1, 51, 00, 00, 85, C0, 75, 06, B8, F4, 35, 44, 00, C3, 83, C0, 0C, C3, 8B, FF, 55, 8B, EC, 56, E8, E2, FF, FF, FF, 8B, 4D, 08...
 
[+]

Entropy:
6.6090

Code size:
211 KB (216,064 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to wpc.0952.edgecastcdn.net  (68.232.34.163:80)

TCP (HTTP):
Connects to install.lemurleap.info  (70.186.131.186:80)

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