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isr_lj.exe

Yuanyuan Zhang

The application isr_lj.exe by Yuanyuan Zhang has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat.
Publisher:
Yuanyuan Zhang  (signed and verified)

MD5:
4db7c1cb0a87997b22194a1f000fa7fa

SHA-1:
c46b0d49f6f362c9e1cf593a7d924d2a8c7176c4

SHA-256:
281fe92761100d1884abd503beefbd165ee1f7c209634519f23e634cc2799f0f

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
4/10/2026 10:06:31 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Mutahba (M)
16.10.22.3

File size:
411.2 KB (421,024 bytes)

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
Yuanyuan Zhang

Authority:
thawte, Inc.

Valid from:
10/11/2016 7:00:00 AM

Valid to:
4/21/2017 6:59:59 AM

Subject:
CN=Yuanyuan Zhang, 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:
173289734913F0DE2C937F585965970D

File PE Metadata
Compilation timestamp:
10/12/2016 6:40:50 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
12288:yU62Hto8+mkYpkYpFx6qWfUuy0vzacSjrJebW:JN5hXiYf2y0vzatl

Entry address:
0x7CE4

Entry point:
E8, 4B, F0, FF, FF, E9, 0A, 40, 00, 00, 55, 8B, EC, 51, 51, 8B, 4D, 08, F6, C1, 01, 74, 0A, DB, 2D, 98, 42, 46, 00, DB, 5D, 08, 9B, F6, C1, 08, 74, 10, 9B, DF, E0, DB, 2D, 98, 42, 46, 00, DD, 5D, F8, 9B, 9B, DF, E0, F6, C1, 10, 74, 0A, DB, 2D, A4, 42, 46, 00, DD, 5D, F8, 9B, F6, C1, 04, 74, 09, D9, EE, D9, E8, DE, F1, DD, D8, 9B, F6, C1, 20, 74, 06, D9, EB, DD, 5D, F8, 9B, 8B, E5, 5D, C3, 55, 8B, EC, FF, 35, 20, 5D, 46, 00, FF, 15, 38, D0, 45, 00, 85, C0, 74, 03, 5D, FF, E0, FF, 75, 18, FF, 75, 14, FF, 75...
 
[+]

Entropy:
7.8201  (probably packed)

Code size:
365 KB (373,760 bytes)

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