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whatsapp.exe

Stepan Rybin

The is the installer for the WebPick InstalleRex download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed without consent. The application whatsapp.exe by Stepan Rybin has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application. The file has been seen being downloaded from riverall.net.
Publisher:
Stepan Rybin  (signed and verified)

MD5:
4b8d3cb2741aa7ee0c46b25716d381ae

SHA-1:
8fbd4ae14d3e2b31503059c06759faa46c6758e1

SHA-256:
0a2eda7b09f5bee971c5b91edf489847308db58d496d14175f2be161f4c3e315

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.

Analysis date:
5/4/2024 2:26:04 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.WebPick.StepanRy (M)
16.5.6.20

File size:
1.1 MB (1,133,256 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\whatsapp.exe

Digital Signature
Signed by:
Stepan Rybin

Authority:
Unizeto Technologies S.A.

Valid from:
6/27/2014 5:37:40 AM

Valid to:
6/27/2015 5:37:40 AM

Subject:
E=rybin.step@yandex.ru, CN=Stepan Rybin, O=Stepan Rybin, C=UA

Issuer:
CN=Certum Code Signing CA, OU=Certum Certification Authority, O=Unizeto Technologies S.A., C=PL

Serial number:
47154C2151E9EB8DFA42C2C9E45BFC6C

File PE Metadata
Compilation timestamp:
8/8/2013 12:07:45 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
24576:3u1sDs3MRKtel+SJ3Ypv/QGfmX/lYmM+uvRU0fynQk:ZgcRKt1uoh/QzX2mBu5U0f7k

Entry address:
0xB8B1B

Entry point:
E8, FC, 13, 00, 00, E9, 00, 00, 00, 00, 6A, 14, 68, 90, F0, 4F, 00, E8, 0F, 19, 00, 00, E8, CC, 15, 00, 00, 0F, B7, F0, 6A, 02, E8, 8F, 13, 00, 00, 59, B8, 4D, 5A, 00, 00, 66, 39, 05, 00, 00, 40, 00, 74, 04, 33, DB, EB, 33, A1, 3C, 00, 40, 00, 81, B8, 00, 00, 40, 00, 50, 45, 00, 00, 75, EB, B9, 0B, 01, 00, 00, 66, 39, 88, 18, 00, 40, 00, 75, DD, 33, DB, 83, B8, 74, 00, 40, 00, 0E, 76, 09, 39, 98, E8, 00, 40, 00, 0F, 95, C3, 89, 5D, E4, E8, 3E, 03, 00, 00, 85, C0, 75, 08, 6A, 1C, E8, DC, 00, 00, 00, 59, E8...
 
[+]

Code size:
759.5 KB (777,728 bytes)

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

http://riverall.net/v20086?product_name=WhatsApp&filesize=4mb&product_title=WhatsApp&installer_file_name=WhatsApp&product_file_name=WhatsApp&reffer=http://adk2cdn.cpmrocket.com/cpmrocket/scripts/.../direct.html?a=47071149&size=800x600&ci=1&serverdomain=adk2trk2.cpmrocket.com&context=c54334777&locale=ES&affiliate_id=es_whatsapp_alexandre

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