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_isuser.dll

Everstrike OOO

The module _isuser.dll by Everstrike OOO has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is also typically executed from the user's temporary directory.
Publisher:
Everstrike OOO  (signed and verified)

MD5:
314421a8ee306e4e0ad469c2cdcc1c76

SHA-1:
728fbff63d6513017d7421ca824d18d7f95daf8d

SHA-256:
4cc20707465446f59d6a3bfff4631f89cd102d5327e6dcdc022d6b0a7d5c2d72

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
4/20/2024 9:10:44 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Everstri (M)
16.7.9.15

File size:
55.3 KB (56,672 bytes)

File type:
Dynamic link library (Win32 DLL)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\ushield\presetup\_isuser.dll

Digital Signature
Signed by:
Everstrike OOO

Authority:
VeriSign, Inc.

Valid from:
12/16/2010 12:00:00 PM

Valid to:
1/13/2012 11:59:59 AM

Subject:
CN=Everstrike OOO, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Everstrike OOO, L=Ulyanovsk, S=n/a, C=RU

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
1C6FEBAF7115A5C4FFAEAACEC3EA4FF1

File PE Metadata
Compilation timestamp:
9/7/2011 5:08:28 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
768:Vvc079iO2eMDx+XcLsReDAEKwkNChnPkZImnTEDQxB6yiBFbUiLFmOXY:Vjhl2eMDboRNSkNenPkLs9hoN

Entry address:
0x3BFB

Entry point:
8B, FF, 55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, 58, 19, 00, 00, FF, 75, 08, 8B, 4D, 10, 8B, 55, 0C, E8, EC, FE, FF, FF, 59, 5D, C2, 0C, 00, CC, CC, 53, 56, 8B, 44, 24, 18, 0B, C0, 75, 18, 8B, 4C, 24, 14, 8B, 44, 24, 10, 33, D2, F7, F1, 8B, D8, 8B, 44, 24, 0C, F7, F1, 8B, D3, EB, 41, 8B, C8, 8B, 5C, 24, 14, 8B, 54, 24, 10, 8B, 44, 24, 0C, D1, E9, D1, DB, D1, EA, D1, D8, 0B, C9, 75, F4, F7, F3, 8B, F0, F7, 64, 24, 18, 8B, C8, 8B, 44, 24, 14, F7, E6, 03, D1, 72, 0E, 3B, 54, 24, 10, 77, 08, 72, 07, 3B, 44, 24...
 
[+]

Code size:
28 KB (28,672 bytes)

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