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MassEmailSender-3.0.3.8.Setup.exe

Tenki Technology Co., Ltd.

The application MassEmailSender-3.0.3.8.Setup.exe by Tenki Technology Co. 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 files.downloadnow.com and multiple other hosts.
Publisher:
Tenki Technology Co., Ltd.  (signed and verified)

MD5:
9129ee81954c2510fe6b6ee652a402b2

SHA-1:
7c11917262a32f943da4d1e08cc4d72e9add1b31

SHA-256:
5aa90007403dca5cf2e06c5e6636d2203589c99985946767bcbe9ea0d9bb00e8

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
1/13/2025 1:36:27 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Optional.Installer.Z
14.4.14.5

File size:
2.3 MB (2,440,272 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\downloads\massemailsender-3.0.3.8.setup.exe

Digital Signature
Signed by:
Tenki Technology Co., Ltd.

Authority:
VeriSign, Inc.

Valid from:
3/18/2012 8:00:00 PM

Valid to:
5/29/2015 7:59:59 PM

Subject:
CN="Tenki Technology Co., Ltd.", OU=Digital ID Class 3 - Microsoft Software Validation v2, O="Tenki Technology Co., Ltd.", L=Langfang, S=Hebei, C=CN

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:
6E0A5E2C7C789BDA175F577FFD554961

File PE Metadata
Compilation timestamp:
6/6/2009 5:41:54 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:VH7m2h/LH3leqKhkKzeXetfVoJKlYsqzmPQOsraMsOWd5yKlSt2:VTtj3lUkVO3oajPQOsfTWDyPE

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.9929

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file MassEmailSender-3.0.3.8.Setup.exe has been seen being distributed by the following 2 URLs.

http://files.downloadnow.com/s/software/13/66/34/.../MassEmailSender-3.0.6.6.Setup.exe

http://download2.mass-email-sender.com/.../MassEmailSender-3.0.3.8.Setup.exe

Remove MassEmailSender-3.0.3.8.Setup.exe - Powered by Reason Core Security
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