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aird8b9.exe

PC Backup Software Limited

The application aird8b9.exe by PC Backup Software Limited has been detected as a potentially unwanted program by 6 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from drzwu57ht9dxd.cloudfront.net and multiple other hosts.
Publisher:
PC Backup Software Limited  (signed and verified)

MD5:
28937ecf5f547bf7a1bc74f4b2ea35a7

SHA-1:
e8d50805c73d8d73a47e1dad409e5cb31dde2139

SHA-256:
b2f5232e905be8383f1fe6358c01a2a1029f8ac9242b074847883ed09ec4818e

Scanner detections:
6 / 68

Status:
Potentially unwanted

Analysis date:
4/25/2024 10:25:38 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Generic
2015.0.3389

Dr.Web
Threat.Undefined
9.0.1.0274

herdProtect (fuzzy)
variant of aff_setup.exe
2014.10.1.19

Kaspersky
Trojan-FakeAV.Win32.Agent
14.0.0.3167

Qihoo 360 Security
Win32/Trojan.5f3
1.0.0.1015

Reason Heuristics
PUP.Optional.PCBackupSoftwareLimited.H
14.8.7.14

File size:
257.1 KB (263,248 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\aird8b9.exe

Digital Signature
Signed by:
PC Backup Software Limited

Authority:
DigiCert Inc

Valid from:
7/7/2014 8:00:00 PM

Valid to:
7/12/2016 8:00:00 AM

Subject:
CN=PC Backup Software Limited, O=PC Backup Software Limited, L=Whiteley, S=Hanmpshire, C=GB

Issuer:
CN=DigiCert SHA2 Assured ID Code Signing CA, OU=www.digicert.com, O=DigiCert Inc, C=US

Serial number:
05695BB515DA4B74B5B9C54CEBC782E0

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:LskUaD6ryPuKgC90/mBD7wUOjHgRS+WxsM0pf8tGbFS1Jt:/UaD6ryJV99BDyB+csTgYWv

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.8100

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file aird8b9.exe has been seen being distributed by the following 10 URLs.

http://drzwu57ht9dxd.cloudfront.net/bundles/.../aff_setup.exe

http://cdn77.airdwnlds.com/downloads/offers/.../aff_setup.exe

http://cdn.backupgrid.net/aff_setup.exe

http://d22z5jqfvuej9a.cloudfront.net/bundles/.../aff_setup.exe

http://cdn2.chironexfleckerisilver.com/downloads/offers/.../aff_setup.exe

http://random.backupcdn.com/aff_setup.exe

http://dm930xmxv1gqs.cloudfront.net/bundles/.../aff_setup.exe

http://cdn.airdlr1.com/downloads/offers/.../aff_setup.exe

http://cdn2.backupgrid.net/aff_setup.exe

http://cdn.chironexfleckerisilver.com/downloads/offers/.../aff_setup.exe

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

TCP (HTTP):
Connects to s3-1.amazonaws.com  (176.32.99.56:80)

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