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extensionupdate.exe

South Star Financial Co Limited

The application extensionupdate.exe by South Star Financial Co Limited has been detected as adware by 8 anti-malware scanners. The program is a setup application that uses the Inno Setup installer. The file has been seen being downloaded from cdninst.com.
Publisher:
Southstarco   (signed by South Star Financial Co Limited)

MD5:
3a8e2369d7ad6582a92bb048d1b1b53d

SHA-1:
6a691ff8fac02e8bd9a16b18120f1a1c477342e0

SHA-256:
864fc2b508730605f6595c748348f8b826f125885d8c956e184e89ed4aab0a55

Scanner detections:
8 / 68

Status:
Adware

Explanation:
extensionupdate.exe is infected by a worm that might download, install and run additional malware as well as may spread to other executable files.

Analysis date:
4/23/2024 4:53:21 PM UTC  (today)

Scan engine
Detection
Engine version

Bkav FE
W32.Clod057.Trojan
1.3.0.4613

ESET NOD32
Win32/Toolbar.BitCocktail (variant)
7.9284

K7 AntiVirus
Unwanted-Program
13.175.10825

Malwarebytes
PUP.Optional.VbatesHelper.A
v2013.12.25.03

NANO AntiVirus
Trojan.Win32.Ramnit.cqrxvz
0.28.0.57029

Reason Heuristics
PUP.SouthStarFinancialCoLimited.P
14.8.8.0

Sophos
BitCocktail
4.96

Trend Micro House Call
TROJ_GEN.F47V1209
7.2.16

File size:
1.2 MB (1,308,648 bytes)

Product version:
2.0.0.436

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

Common path:
C:\windows\temp\inj002\extensionupdate.exe

Digital Signature
Signed by:
South Star Financial Co Limited

Authority:
Thawte, Inc.

Valid from:
11/25/2012 7:00:00 PM

Valid to:
1/31/2014 6:59:59 PM

Subject:
CN=South Star Financial Co Limited, O=South Star Financial Co Limited, L=Belize City, S=Belize, C=BZ

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
52F8EC3E72E1EF69FFEFE57E1A54DF45

File PE Metadata
Compilation timestamp:
6/19/1992 5:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:rna3OIKY5/8M7m7pSQ1vfNAxuQ9fRMYzRq+cue/Kb3mRRrpgnf:ra3CY98M7m7p1vVVQVR5FZe/s3Gr6f

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, E8, CD, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, E8, CD...
 
[+]

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

Code size:
37 KB (37,888 bytes)

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

http://cdninst.com/offers/.../v-bates.exe

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