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firefox.exe

FASt download got

The application firefox.exe by FASt download got 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 NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from get.down1227group.info.
Publisher:
FASt download got  (signed and verified)

MD5:
0c6caaac3595a54d553793633eda8853

SHA-1:
21755f3d384eb9ea58db644412ebc7373754033d

SHA-256:
67e3d63df6254b4cfa02572918fe55c54842fb031de99b7954eaff178cd3caaf

Scanner detections:
1 / 68

Status:
Adware

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:
11/27/2024 5:00:59 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse.FAStdownloadgot.Installer (M)
15.12.31.6

File size:
576.5 KB (590,352 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\firefox.exe

Digital Signature
Signed by:
FASt download got

Authority:
thawte, Inc.

Valid from:
3/7/2015 7:00:00 PM

Valid to:
1/27/2016 6:59:59 PM

Subject:
CN=FASt download got, O=FASt download got, L=Dublin, S=Dublin, C=IE

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

Serial number:
6926AADF837998BE41687093EA536238

File PE Metadata
Compilation timestamp:
12/5/2009 5:52:12 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:aOSLB0IVhdGPQ6wgAJe91ZXTK2bKcb48ulaYZ:aOSdDVjG46wgA0zvKchu

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9424

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://get.down1227group.info/1428794564/1428794564/get62?p=1955&d=18257&l=5187&n=1&exeurl=https://download-installer.cdn.mozilla.net/pub/firefox/releases/33.0/win32/en-US/Firefox Setup Stub 33.0.exe&productname=Firefox&d1=184412&d2=459&filename=Firefox&tyurl=http://www.postdownload.net/.../redirect.php?id=rsbvf2njr8od9pnk3spnvm477fo7eailu00sg08qs52v0kuu9530-d71477f5bfa93d76e402ff28bcb39b0e&d=downloadzone.org&p=Firefox&pid=3&bex=1&countryid=265&icon=1

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