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camstudio.exe

The application camstudio.exe has been detected as a potentially unwanted program by 2 anti-malware scanners. The program is a setup application that uses the Inno Setup installer, however the file is not signed with an authenticode signature from a trusted source. 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 www.signbulkvault.com.
MD5:
88cfb60381b1151e77c9a3a9f1642111

SHA-1:
ff998368ee4fb2e2b64d4a24b86d4f97a662483e

SHA-256:
a2bfa7b45f0f033f698aba9c66aa751db13ac029cae49eb20f50a6cef33cd04f

Scanner detections:
2 / 68

Status:
Potentially unwanted

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

Analysis date:
11/28/2024 2:43:45 AM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/InstallCore.AGX potentially unwanted application
8.0.319.0

Reason Heuristics
PUP.InstallCore.EST (M)
16.7.3.12

File size:
53.3 KB (54,600 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

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

File PE Metadata
Compilation timestamp:
6/20/1992 1:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
1536:13qRLKdQ0CeWTcCp68gyja+ROJYVsF+rQ:wLUTSTVg8Dm+eeWj

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, BF, A9, FF, FF, E8, 5E, 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, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
6.7083

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

Code size:
37 KB (37,888 bytes)

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

http://www.signbulkvault.com/c?x=eAflVtZu6rMKzwRJgEJuDeHCW1ozW3 yPqvtHMieYrU=&c=DAQDaqtMQ5TXAFiRmtMITLx219bzzI84CGTCqL6nrzsAKSvHrhZaDlSFPguWRxzm5JI9O/8FEjMVjTAQKW8qM2ZyIlxCHXd8FFDr0/k2J4zT1oye8jKmiLtLEVwMlrGETB5CJKfi/Ic58ZF9j24bGQ==&e=0&downloadAs=camstudio.exe&fallback_url=http://.../CamStudioSetup.exe

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