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jdownloader2setup.exe

Appwork GmbH

The installer utilizes the installCore download manager which may bundle additional offers for various ad-supported toolbars, extensions and utilities. The application jdownloader2setup.exe by Appwork GmbH has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the installCore installer. The file has been seen being downloaded from r2.computerbild.de and multiple other hosts. While running, it connects to the Internet address installer.jdownloader.org on port 80 using the HTTP protocol.
Publisher:
Appwork GmbH  (signed and verified)

MD5:
bb2486ae6c5ec00682a0cbf4725efd62

SHA-1:
7cfedd7eadc463e9040875c1521a2aa6e4933ea9

SHA-256:
0064f5c85f8379cd31b9990b850c9af58f16aa83f7bb63c8675d5f900f1a93e2

Scanner detections:
1 / 68

Status:
Potentially unwanted

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.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
11/27/2024 12:48:22 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.Installer (M)
16.2.29.1

File size:
320.6 KB (328,320 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Nullsoft Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\jdownloader2setup.exe

Digital Signature
Signed by:
Appwork GmbH

Authority:
thawte, Inc.

Valid from:
1/28/2015 1:00:00 AM

Valid to:
1/29/2016 12:59:59 AM

Subject:
CN=Appwork GmbH, O=Appwork GmbH, L=Fürth, S=Bayern, C=DE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
4C87501159A97E0FA43CF04A705381FC

File PE Metadata
Compilation timestamp:
10/7/2014 6:40:23 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:B8dNXSEo7NBjYjWV58fGm3ZlaECSyFW9H71ke6QU/4OkVokku3yprswNRhXdI:aO1DBqGS0Whqd/cH4rsw3hXdI

Entry address:
0x30E2

Entry point:
81, EC, 84, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 90, 91, 40, 00, 89, 5C, 24, 20, C6, 44, 24, 14, 20, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, 1C, 71, 40, 00, 53, FF, 15, 8C, 72, 40, 00, 6A, 09, A3, 78, E4, 42, 00, E8, A8, 2D, 00, 00, A3, C4, E3, 42, 00, 53, 8D, 44, 24, 38, 68, 60, 01, 00, 00, 50, 53, 68, 00, 88, 42, 00, FF, 15, 64, 71, 40, 00, 68, 80, 91, 40, 00, 68, C0, DB, 42, 00, E8, 52, 2A, 00, 00, FF, 15, 20, 71, 40, 00, BD, 00, 40, 43, 00, 50, 55, E8, 40, 2A...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file jdownloader2setup.exe has been seen being distributed by the following 2 URLs.

http://r2.computerbild.de/exec/r2r.pl?m=w-cobi;u=http://d.computerbild.de/downloads/.../JDownloader2Setup.exe

http://d.computerbild.de/downloads/.../JDownloader2Setup.exe

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

TCP (HTTP):
Connects to installer.jdownloader.org  (85.131.130.148:80)

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