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combofix.exe

Cat

PlatformPrompt (Alpha Criteria Ltd.)

The application combofix.exe, “Cat Setup ” by PlatformPrompt (Alpha Criteria) has been detected as adware 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 setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from download.bleepingcomputer.com.
Publisher:
PlatformPrompt (Alpha Criteria Ltd.)  (signed and verified)

Product:
Cat

Description:
Cat Setup

MD5:
1783a03dfb1995a6fbd1118bd2645fd9

SHA-1:
3eac025f61a0c107f9f1b0327181367fa83ffae9

SHA-256:
444aaa79ab7b2acd03cc6c77b58072803d40a9ab9420c169fa55924da6d176e6

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
4/24/2024 7:28:33 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.InstallCore.AC (M)
16.8.2.12

File size:
994.4 KB (1,018,240 bytes)

Product version:
3.3

Copyright:
Fast lite

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
Signed by:
PlatformPrompt (Alpha Criteria Ltd.)

Authority:
GlobalSign nv-sa

Valid from:
12/16/2015 1:17:26 PM

Valid to:
9/2/2016 1:02:46 PM

Subject:
CN=PlatformPrompt (Alpha Criteria Ltd.), O=PlatformPrompt (Alpha Criteria Ltd.), L=Tel Aviv, C=IL

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
112111817CD313A533F2A76178D4452F81A6

File PE Metadata
Compilation timestamp:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:8wiT4AGLl+3qITk0EpGPOhGGBtPr+Fk6xcJ4oBWYg8:8dI2TypvhGq+FnxJE

Entry address:
0xA5F8

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, CE, 8A, FF, FF, E8, D5, 9C, FF, FF, E8, 64, 9F, FF, FF, E8, 07, A0, FF, FF, E8, A6, BF, FF, FF, E8, 11, E9, FF, FF, E8, 78, EA, FF, FF, 33, C0, 55, 68, C9, AC, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 92, AC, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 26, F5, FF, FF, E8, 11, F1, FF, FF, 80, 3D, 34, B2, 40, 00, 00, 74, 0C, E8, 23, F6, FF, FF, 33, C0, E8, C4, 97, FF, FF, 8D, 55, F0, 33, C0, E8, B6, C5, FF, FF, 8B, 55...
 
[+]

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
39.5 KB (40,448 bytes)

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

https://download.bleepingcomputer.com/dl/9ae44361e7b3a879f3a713f3a1711255/5778a342/windows/security/anti-virus/c/.../ComboFix.exe

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