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flash_update.exe

The application flash_update.exe 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 AirInstaller Download Manager installer, however the file is not signed with an authenticode signature from a trusted source. The file has been seen being downloaded from dl.airdwnlds.com a web site host known to distribute potentially unwanted software operated by Air Software.
MD5:
2abc229fb5ea9fd6ee99631596f969ad

SHA-1:
271f9591ef9519a28b855bce8784c428dbb574a4

SHA-256:
70c0fe484cb16f29cc432333fd6518997947857099c2aa833d58645bd0e0cc08

Scanner detections:
1 / 68

Status:
Potentially unwanted

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/26/2024 9:31:07 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.AirInstaller.Bundler
16.2.15.14

File size:
815.9 KB (835,496 bytes)

File type:
Executable application (Win16 EXE)

Bundler/Installer:
AirInstaller Download Manager

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

File PE Metadata
Compilation timestamp:
10/22/2013 2:50:37 PM

OS version:
5.1

OS bitness:
Win16

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:UqhgoLN73ax6Rwok/id4EaIx9epDViQMNa:UqtGXpid64cpHb

Entry address:
0x25D120

Entry point:
60, BE, 00, B0, 59, 00, 8D, BE, 00, 60, E6, FF, 57, 83, CD, FF, EB, 10, 90, 90, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, 0B, 75, 28, 8B, 1E, 83, EE, FC, 11, DB, 72, 1F, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, EB, 52, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46, 83, F0, FF, 74, 75, D1, F8, 89...
 
[+]

Entropy:
7.8801

Packer / compiler:
UPX 2.90LZMA

Code size:
780 KB (798,720 bytes)

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

http://dl.airdwnlds.com/get/click/.../?sid=37&uid=166620640&filename=Flash_Update

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