offer_downloader.exe

Sevas-S LLC

The application offer_downloader.exe by Sevas-S has been detected as adware by 5 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. According to AVG, this software downloads additional adware offers during setup. While running, it connects to the Internet address sage.parklogic.com on port 80 using the HTTP protocol.
Publisher:
Sevas-S LLC  (signed and verified)

MD5:
9b391bceab0c923b8e7aff136baf96e6

SHA-1:
8ad78f6c02e2bdefff5f03509870f735df039ead

Scanner detections:
5 / 68

Status:
Adware

Analysis date:
11/12/2018 8:03:56 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Downloader
2015.0.3423

Dr.Web
Adware.Downware.1446
9.0.1.0185

Reason Heuristics
PUP.SevasS.Q
14.8.7.20

Trend Micro House Call
TROJ_GEN.F47V0218
7.2.185

VIPRE Antivirus
Sevas-S Installer
27750

File size:
68.9 KB (70,552 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\Documents and Settings\{user}\Application data\rmi\offer_downloader.exe

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
1/22/2013 9:00:00 PM

Valid to:
2/22/2014 8:59:59 PM

Subject:
CN=Sevas-S LLC, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Sevas-S LLC, L=Kyiv, S=Kyivska oblast, C=UA

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:
527471E53862E2F90AB45ED4ACB8F4C2

File PE Metadata
Compilation timestamp:
5/19/2013 7:52:54 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
1536:AIo0KC0rA+wA1+lWe1YzIN4Romu/TmL2W6lVVzU9CTj:AYKCiARAoWe1YzIN45pL2W+Q9S

Entry address:
0x31B1

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, D8, 92, 40, 00, 89, 6C, 24, 14, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, 34, 71, 40, 00, 55, FF, 15, AC, 72, 40, 00, 6A, 08, A3, 58, 92, 42, 00, E8, 90, 2E, 00, 00, A3, A4, 91, 42, 00, 55, 8D, 44, 24, 34, 68, B4, 02, 00, 00, 50, 55, 68, 58, 06, 42, 00, FF, 15, 7C, 71, 40, 00, 68, C0, 92, 40, 00, 68, A0, 81, 42, 00, E8, FB, 2A, 00, 00, FF, 15, 38, 71, 40, 00, BB, 00, 40, 43, 00, 50, 53, E8, E9, 2A, 00, 00...
 
[+]

Entropy:
7.0002

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to sage.parklogic.com  (69.39.236.56:80)

TCP (HTTP):
Connects to ec2-23-21-66-175.compute-1.amazonaws.com  (23.21.66.175:80)

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