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yahoo_messenger.exe

Leso

Dov gil Management Ltd.

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application yahoo_messenger.exe, “Leso Setup ” by Dov gil Management has been detected as adware 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 installCore installer. The file has been seen being downloaded from www.gifttownworld.com.
Publisher:
Dov gil Management Ltd.  (signed and verified)

Product:
Leso

Description:
Leso Setup

MD5:
b36bc15c2bba5f799382cefa9d6779bf

SHA-1:
9e4f2aece1689ca0bc5070e6c6218ed0742971c9

SHA-256:
9dc3c35198f5198575ddb13dc46e0c3dfaaa003c7da6dd35c008b3184107aa34

Scanner detections:
1 / 68

Status:
Adware

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.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
11/14/2024 2:40:46 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore (M)
17.3.12.12

File size:
1.1 MB (1,171,624 bytes)

Product version:
4.8.8

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

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

Digital Signature
Signed by:
Dov gil Management Ltd.

Authority:
GlobalSign nv-sa

Valid from:
2/24/2016 2:04:43 PM

Valid to:
2/24/2017 2:04:43 PM

Subject:
CN=Dov gil Management Ltd., O=Dov gil Management Ltd., L=Petah Tikva, C=IL

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
112103FCD147C9A5FDDE12426FF8308C8A2A

File PE Metadata
Compilation timestamp:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file yahoo_messenger.exe has been seen being distributed by the following URL.

http://www.gifttownworld.com/gWed734Re8jSCot_3pxT86U1yOkLkrJIvTW4A7T70 VK9J8u89Fng5BdJh53vIBm2Jl37pYY hpqNw1QqISrNXmjSZeSLwmcXzLf5mkh 1T0s_vVkOt3HSAD5D_TC10GlLFlG2zTySQQe9CWj1f2hijseLd8hpwiN5FoZv_1eFymC7g7eKoPCsdqJZlt h7FTEzxSxv44t_kknKe0alerXzulrJcRIx7u2xkoyRZzmXk1PennnOt8Bnu5nOdOaXar2qV6X 4wyDrINZYN5K58oSy5oFedAVrHQw1Ek0qaYGSp2YzyqB0KxWAch94SStDx kpOKFTG6ipRh5suaiYJjkXfx 1ybPgGTiZiAKYJuqfmr1d1BEV4N9UkSk4OWOXSXU7Oou35cZrlGOXC2rPN UignQL5GXjAEC8PCBwk_EO0H5adPhCViJIPBzNUEP3pijoyosYfrDBRSdBqSJptrfSbYqrVdwq1PVndtWADnEe rpEJQY=-G3wAAETd1prxhjRMcYie83CF6yEXBw5_m8XBxOM4xqB2OPywFp14bVGaxtioGfeITtOUrVJ7_ZFPj47 fdQPvlu5FJ6ziY2CVIBatGr8WN68Cyg=

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