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isr_lm.exe

Yuanyuan Zhang

The application isr_lm.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:
04a098c540dc6a46aa76398f365c75f2

SHA-1:
62fdedcd4b15563a42f2c3535404096ea35710da

SHA-256:
ff8d330938af4ff21cb7e139ce887aff76d01cb34e65c86cbd3966be2424d0ae

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
12/17/2025 7:17:56 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Mutahba (M)
16.11.7.12

File size:
411.7 KB (421,536 bytes)

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
Yuanyuan Zhang

Authority:
thawte, Inc.

Valid from:
10/24/2016 4:00:00 AM

Valid to:
4/21/2017 3:59:59 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:
1B5342F4535DD4CDF2CFE118D8E09921

File PE Metadata
Compilation timestamp:
11/3/2016 6:27:14 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
12288:uL4lPsUKEFHUa1X+C9l9MX4wZhKjNmdQjN:gsPQEFHUa1Xr9lybaNmdQ

Entry address:
0x4C5F

Entry point:
E8, C4, DC, FF, FF, E9, FF, 74, 00, 00, 55, 8B, EC, 56, FF, 75, 08, 8B, F1, E8, 73, CB, FF, FF, C7, 06, A8, E1, 45, 00, 8B, C6, 5E, 5D, C2, 04, 00, 55, 8B, EC, 56, FF, 75, 08, 8B, F1, E8, 58, CB, FF, FF, C7, 06, 54, 03, 46, 00, 8B, C6, 5E, 5D, C2, 04, 00, 6A, 08, 68, 20, 3D, 46, 00, E8, 15, 86, 00, 00, 8B, 75, 08, C7, 46, 5C, C8, FF, 45, 00, 83, 66, 08, 00, 33, FF, 47, 89, 7E, 14, 89, 7E, 70, 6A, 43, 58, 66, 89, 86, B8, 00, 00, 00, 66, 89, 86, BE, 01, 00, 00, C7, 46, 68, D0, 54, 46, 00, 83, A6, B8, 03, 00...
 
[+]

Entropy:
7.8171  (probably packed)

Code size:
368.5 KB (377,344 bytes)

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