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nationzoom.exe

Yuanyuan Mei

The application nationzoom.exe by Yuanyuan Mei has been detected as a potentially unwanted program 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 dgkytklfjrqkb.cloudfront.net.
Publisher:
Yuanyuan Mei  (signed and verified)

MD5:
2d56ce947ac67d4271dfa366f336521f

SHA-1:
de8aa648478471879ad936d14e5d66aff20e1f20

SHA-256:
2622f4f38b5cf0a74e58a95161465c632ad5bece44212c8d5791b462fdc94825

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
10/5/2025 8:38:53 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Elex (M)
16.8.25.11

File size:
446.1 KB (456,832 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\nationzoom.exe

Digital Signature
Signed by:
Yuanyuan Mei

Authority:
thawte, Inc.

Valid from:
8/23/2016 2:00:00 AM

Valid to:
4/21/2017 1:59:59 AM

Subject:
CN=Yuanyuan Mei, OU=Individual Developer, O=No Organization Affiliation, L=Beijing, S=Beijing, C=CN

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
2D8C6D94F1F0F00D4CB839FB5BF8445D

File PE Metadata
Compilation timestamp:
8/24/2016 12:03:36 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
12288:4ylm00BsSKkQD4PRvqfhSD93EPExpmTNDIX69u+HkeP9P2isu:xErQDAZqfhC9+ELwDIX6g+HkeP9P2isu

Entry address:
0x4D70

Entry point:
E8, 7C, 32, 00, 00, E9, 7F, FE, FF, FF, CC, CC, CC, CC, CC, CC, 57, 56, 8B, 74, 24, 10, 8B, 4C, 24, 14, 8B, 7C, 24, 0C, 8B, C1, 8B, D1, 03, C6, 3B, FE, 76, 08, 3B, F8, 0F, 82, 68, 03, 00, 00, 0F, BA, 25, F4, 96, 41, 00, 01, 73, 07, F3, A4, E9, 17, 03, 00, 00, 81, F9, 80, 00, 00, 00, 0F, 82, CE, 01, 00, 00, 8B, C7, 33, C6, A9, 0F, 00, 00, 00, 75, 0E, 0F, BA, 25, 18, 80, 41, 00, 01, 0F, 82, DA, 04, 00, 00, 0F, BA, 25, F4, 96, 41, 00, 00, 0F, 83, A7, 01, 00, 00, F7, C7, 03, 00, 00, 00, 0F, 85, B8, 01, 00, 00...
 
[+]

Code size:
62 KB (63,488 bytes)

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

http://dgkytklfjrqkb.cloudfront.net/.../yomz.exe

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