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default.exe

Skymonk Solutions Limited

The application default.exe by Skymonk Solutions Limited has been detected as adware by 2 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from update.skymonk.net.
Publisher:
Skymonk Solutions Limited  (signed and verified)

MD5:
c1f765f66d0406df106bdf9e2828ac2e

SHA-1:
9d6a607065b9554910783665d1b26427baeaf779

SHA-256:
7653213e5a8e4469c8c5b9315b0f8a1b042ac3c42dc5c0017eb38b99a651f2d7

Scanner detections:
2 / 68

Status:
Adware

Analysis date:
4/20/2024 3:51:17 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Tool.Skymonk.14
9.0.1.0357

Reason Heuristics
PUP.SkymonkSolutionsLimited.H
14.5.19.1

File size:
1006.2 KB (1,030,304 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Skymonk Solutions Limited

Authority:
VeriSign, Inc.

Valid from:
4/9/2012 3:00:00 AM

Valid to:
4/10/2015 2:59:59 AM

Subject:
CN=Skymonk Solutions Limited, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Skymonk Solutions Limited, L=Tortola, S=Tortola, C=VG

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:
632A5F301191DF03C4933D982BAD525F

File PE Metadata
Compilation timestamp:
2/24/2012 9:22:01 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:PFnb1l21D6iq6vYdq1Y8dx2a0nDG320bgqYryjmy:11MhDvqq1Vdx2a0irbTQWmy

Entry address:
0x36DA

Entry point:
81, EC, 84, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 1C, C7, 44, 24, 10, C0, 8A, 40, 00, 89, 5C, 24, 18, C6, 44, 24, 14, 20, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, AC, 80, 40, 00, 53, FF, 15, A4, 82, 40, 00, 6A, 08, A3, 18, 36, 45, 00, E8, FD, 28, 00, 00, 53, 68, 60, 01, 00, 00, A3, 28, 35, 45, 00, 8D, 44, 24, 3C, 50, 53, 68, BF, 8A, 40, 00, FF, 15, 70, 81, 40, 00, 68, B4, 8A, 40, 00, 68, 20, F5, 44, 00, E8, 27, 26, 00, 00, FF, 15, A8, 80, 40, 00, 50, BF, 50, C0, 47, 00, 57, E8, 15, 26...
 
[+]

Entropy:
7.9692

Packer / compiler:
Nullsoft install system v2.x

Code size:
28 KB (28,672 bytes)

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

http://update.skymonk.net/.../default.exe

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