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naistam.exe

The executable naistam.exe has been detected as malware by 11 anti-virus scanners. The program is a setup application that uses the Nullsoft Scriptable Install System installer, however the file is not signed with an authenticode signature from a trusted source. Infected by an entry-point obscuring polymorphic file infector which will create a peer-to-peer botnet and receives URLs of additional files to download. The file has been seen being downloaded from www.codec13sudha.com.
MD5:
a651b69b5fc9a027235c99e0ee3c9250

SHA-1:
011d3fa40baad44b9626c57b7fe630e184745fd3

SHA-256:
a28de569884c3d33cdd9d322040c6ed191a4deef72f1933378e5936f51dd7012

Scanner detections:
11 / 68

Status:
File is infected by a Virus

Explanation:
The file is infected by a polymorphic file infector virus.

Analysis date:
12/23/2024 2:19:52 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:SaliCode
160215-2

AVG
Win32/Sality
2015.0.4530

Dr.Web
Win32.Sector.30
9.0.1.05190

ESET NOD32
Win32/Sality.NBA virus
8.0.319.0

F-Prot
W32/Sality.gen2
4.6.5.141

Kaspersky
Virus.Win32.Sality
15.0.0.562

McAfee
Virus.W32/Sality.gen.z
18.0.204.0

Microsoft Security Essentials
Threat.Undefined
1.213.6460.0

Norman
Win32.Sality.3
17.02.2016 05:18:35

Sophos
Virus 'Mal/Sality-D'
5.23

VIPRE Antivirus
Threat.4721115
47240

File size:
308.7 KB (316,159 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Nullsoft Scriptable Install System

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\naistam.exe

File PE Metadata
Compilation timestamp:
12/6/2009 5:52:12 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:9F7frvDE8iE8hnEfedwqO9kXSA1jK1NKsdJ+GvkIP6H871y0G8G+:zTgmWKIwT21jyBdoAUc71XG+

Entry address:
0x30FA

Entry point:
8D, 15, 98, 38, 69, B1, F6, C5, FB, 00, D7, 22, D1, 84, EE, 85, C3, 8B, E8, F7, C0, A9, 03, 79, 69, F7, C6, 46, 21, 45, 7E, 71, 0E, 84, C0, 81, DD, 30, 7C, 2F, AF, C7, C6, 30, 21, EA, 65, 81, EA, A6, 19, 00, 00, 8D, 0D, 2B, A5, 91, A3, 0F, BF, CB, 81, C2, D8, 02, 00, 00, 0F, AF, D2, 69, F8, 05, E8, 01, AC, C6, C1, 18, 00, D8, 1A, E0, 76, 08, 1D, 4E, C0, CC, 6A, 0F, B7, C1, 81, FB, A2, 20, 00, 00, 74, 07, C6, C4, 20, 8B, FA, FF, C1, E8, 1D, 00, 00, 00, 73, 07, 89, F3, 32, DE, 0F, AF, F5, 0D, 9C, CF, DA, B0...
 
[+]

Code size:
23.5 KB (24,064 bytes)

The file naistam.exe has been seen being distributed by the following URL.

http://www.codec13sudha.com/naistam.exe

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