Analysis
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max time kernel
133s -
max time network
103s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
30/05/2024, 13:58
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231129-en
General
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Target
file.exe
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Size
406KB
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MD5
ca9a95daa96005c43b2402094800081a
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SHA1
82d78d90972f4e7d3494ff9bab33e6b3d65b82ed
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SHA256
0260ea7f3ee2a5b7cc6d2b648d7850ec0f96b70674ab0f9386aa6d07f59d1274
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SHA512
b9093fb0ec4d1888a2c07630fe07ae1c28cd61289611a8965a8b1ab5c83a59fae9e690f1fd086290988250efb4e5dcd322ff5f355402863004c21ac0f05a22a1
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SSDEEP
6144:jSuxvfHBpjCvTorgayosTkSqaN5K2lsmYpK8SMqvWvbbr2DCXAckx64A1vgwt4:jSIBpjCvMUXSK8SMqvWTPwCXAsh1o84
Malware Config
Extracted
stealc
Extracted
vidar
https://t.me/ta904ek
https://steamcommunity.com/profiles/76561199695752269
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
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Detect Vidar Stealer 11 IoCs
resource yara_rule behavioral2/memory/4924-1-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-7-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-5-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-10-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-11-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-28-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-29-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-45-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-46-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-60-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 behavioral2/memory/4924-61-0x0000000000400000-0x0000000000649000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation RegAsm.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1960 set thread context of 4924 1960 file.exe 87 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString RegAsm.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1788 timeout.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\2796BAE63F1801E277261BA0D77770028F20EEE4 RegAsm.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\2796BAE63F1801E277261BA0D77770028F20EEE4\Blob = 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 RegAsm.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4924 RegAsm.exe 4924 RegAsm.exe 4924 RegAsm.exe 4924 RegAsm.exe -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 1960 wrote to memory of 2988 1960 file.exe 86 PID 1960 wrote to memory of 2988 1960 file.exe 86 PID 1960 wrote to memory of 2988 1960 file.exe 86 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 1960 wrote to memory of 4924 1960 file.exe 87 PID 4924 wrote to memory of 3756 4924 RegAsm.exe 96 PID 4924 wrote to memory of 3756 4924 RegAsm.exe 96 PID 4924 wrote to memory of 3756 4924 RegAsm.exe 96 PID 3756 wrote to memory of 1788 3756 cmd.exe 99 PID 3756 wrote to memory of 1788 3756 cmd.exe 99 PID 3756 wrote to memory of 1788 3756 cmd.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1960 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵PID:2988
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Checks computer location settings
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4924 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\JKJEHJKJEBGH" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:3756 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:1788
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