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javaupdate.exe

Appknowledge

The application javaupdate.exe by Appknowledge 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 NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from secure-dl.com.
Publisher:
Appknowledge  (signed and verified)

MD5:
267afd11b1674e4bb859fbbd099a9d5b

SHA-1:
40ad049c4ddd3c8b08af99872591f293724e2ca5

SHA-256:
3e8e3f4e286b47bb3c1efc8337881c5a947e8c2fe8ee4f50d04c409e26a1478d

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.

Analysis date:
11/2/2024 3:23:39 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Appknowl.Installer (M)
16.4.30.4

File size:
873.2 KB (894,184 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Appknowledge

Authority:
COMODO CA Limited

Valid from:
9/14/2014 8:00:00 PM

Valid to:
9/15/2015 7:59:59 PM

Subject:
CN=Appknowledge, O=Appknowledge, STREET=343 w date st, L=San diego, S=ca, PostalCode=92101, C=US

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
386FD03C2C8923196C5614F71033A941

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):
12288:7zihu4RO1+PuNZqhrrxzRKyu5qOdWqyiaT0+k1fgOXPrh1jHsNpEMWgaISsweFBM:7zihzO1+mqhC7dWqOZHOXdOpEMXosfBM

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:
7.9829

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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

http://secure-dl.com/prwrp/process.php?n=WGRbWBFNBCUsWw9HDEIzEXRg&i=WGRYXhhVTCwuTgoNRwwtFSA6ITpaTiZSS1BYZk43AUxWKQYvRDNFHF8dHmoqUgoIAWAoEDNmMAJ0RzBZK1xteHguERsAO0kbemcnPGoWIBMUVjRwOREKHhQxGx1zVx9dPAVuDH8kPX1/NWYmamowLGJaJCkcVyBaBFAmIxBrDhwHXwhzVUx5IX9tOUQMMHIhfScyWkcEPhAxCTdeMk0dI25iAhxzQjBaI0BuHxsVKnFvNX4UaTUzMHkDJCkMDiBjWUwjPAQsHh5wbRhjL3N H2AZEGF/.../RRkNORp1CWU=

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