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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:
0b534cbdc8e0cf74597f9ed1943479a2

SHA-1:
148e9e49ecf6431a9d887d9219d10d91c000da52

SHA-256:
8fb852f28b99be5a811dc4cb17c34d04f2a7cfb8b0330f5f3d4f83895cc15057

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)
16.10.30.9

File size:
418.3 KB (428,288 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:
10/10/2016 5:00:00 PM

Valid to:
4/20/2017 4:59:59 PM

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 4:49:19 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
6144:oZboV0AFvt4P6N/BXtbzYCoqeZUMkGZQTm0bDxF45eupXEt8hrSp:cq0qOCN/RtbzBeZUMbZQCSEcuprM

Entry address:
0x9223

Entry point:
E8, 80, F4, FF, FF, E9, BC, 30, 00, 00, 55, 8B, EC, 56, 8B, F1, E8, 81, B4, FF, FF, F6, 45, 08, 01, 74, 07, 56, E8, 56, EE, FF, FF, 59, 8B, C6, 5E, 5D, C2, 04, 00, B8, 68, 16, 46, 00, C3, 55, 8B, EC, 51, 9B, DD, 7D, FC, 0F, BF, 45, FC, 8B, E5, 5D, C3, 56, 57, BE, 60, 5A, 46, 00, 8B, FE, 53, 8B, 1F, 85, DB, 74, 17, 83, 7F, 04, 01, 74, 11, 53, FF, 15, 2C, D0, 45, 00, 53, E8, 44, C2, FF, FF, 83, 27, 00, 59, 83, C7, 08, 81, FF, 80, 5B, 46, 00, 7C, D8, 5B, 83, 3E, 00, 74, 0E, 83, 7E, 04, 01, 75, 08, FF, 36, FF...
 
[+]

Entropy:
7.8087  (probably packed)

Code size:
366.5 KB (375,296 bytes)

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