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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:
adfbbf698f4cf8ea16b89240268b3fac

SHA-1:
c885081116f9b03cfceea11cfb54c137c03dda05

SHA-256:
fd508982b488d07c3e0d13a03e119c43137c8e1d229b848802d1ad531d4d1e84

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
8/10/2025 2:10:21 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Mutahba (M)
16.12.4.5

File size:
417.4 KB (427,440 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:
11/25/2016 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:
0C1BE58F5DA644DFC0CB6934323DA30F

File PE Metadata
Compilation timestamp:
11/14/2016 9:58:43 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
12288:eM6Fe9SP3zHh7hPiYiZcogS+4L7zh/+XUG+TJDhdmu:AFaafid2VSJ7tlGqWu

Entry address:
0x84F0

Entry point:
E8, 59, 02, 00, 00, E9, D3, 39, 00, 00, 55, 8B, EC, 6A, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 2B, F6, FF, FF, 83, C4, 10, 5D, C3, 55, 8B, EC, 8B, 55, 14, 8B, 4D, 08, 56, 85, D2, 75, 0D, 85, C9, 75, 0D, 39, 4D, 0C, 75, 26, 33, C0, EB, 33, 85, C9, 74, 1E, 8B, 45, 0C, 85, C0, 74, 17, 85, D2, 75, 07, 33, C0, 66, 89, 01, EB, E6, 8B, 75, 10, 85, F6, 75, 19, 33, C0, 66, 89, 01, E8, 1D, 03, 00, 00, 6A, 16, 5E, 89, 30, E8, 1F, E5, FF, FF, 8B, C6, 5E, 5D, C3, 53, 8B, D9, 57, 8B, F8, 83, FA, FF, 75, 16, 2B, DE...
 
[+]

Entropy:
7.8153  (probably packed)

Code size:
367 KB (375,808 bytes)

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