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Analysis
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max time kernel
39s -
max time network
45s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25/06/2024, 02:50
Static task
static1
Behavioral task
behavioral1
Sample
2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe
Resource
win7-20240611-en
General
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Target
2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe
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Size
2.1MB
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MD5
2741b1690b3a1f114ed6ae25eb818bf4
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SHA1
1e0570c28bcaf408e23683371b12aca35a4845f7
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SHA256
2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d
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SHA512
490168edc1aa5cefe33b1693a1345b3d1d0ec898e9f0b8add5061841ebb0db788108576f7f0eacff8a7b934d8fa42afe1879a82d564714d846cf9d6e7c493907
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SSDEEP
24576:cC/gyrgOo5VvmUfq+Zc1Fsuqf9sDUfMxVVtes12FxwojKr98YGeGGHzqqikY+rPN:c3xbZcjHDUkxVVChjHZQHzqZ+rPlV
Malware Config
Extracted
vidar
https://t.me/g067n
https://steamcommunity.com/profiles/76561199707802586
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
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Detect Vidar Stealer 9 IoCs
resource yara_rule behavioral2/memory/376-1-0x0000000004120000-0x0000000004230000-memory.dmp family_vidar_v7 behavioral2/memory/1696-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1696-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1696-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1696-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1696-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1696-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1696-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1696-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation kat66C8.tmp -
Executes dropped EXE 1 IoCs
pid Process 1696 kat66C8.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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 376 set thread context of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 -
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 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat66C8.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat66C8.tmp -
Delays execution with timeout.exe 1 IoCs
pid Process 1800 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1696 kat66C8.tmp 1696 kat66C8.tmp 1696 kat66C8.tmp 1696 kat66C8.tmp 1696 kat66C8.tmp 1696 kat66C8.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 376 wrote to memory of 1696 376 2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe 81 PID 1696 wrote to memory of 4844 1696 kat66C8.tmp 83 PID 1696 wrote to memory of 4844 1696 kat66C8.tmp 83 PID 1696 wrote to memory of 4844 1696 kat66C8.tmp 83 PID 4844 wrote to memory of 1800 4844 cmd.exe 85 PID 4844 wrote to memory of 1800 4844 cmd.exe 85 PID 4844 wrote to memory of 1800 4844 cmd.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe"C:\Users\Admin\AppData\Local\Temp\2a1c5fb46b33b1403e994e7920a6a5b48c4386d711bf6e0b835c96b827cdee4d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:376 -
C:\Users\Admin\AppData\Local\Temp\kat66C8.tmpC:\Users\Admin\AppData\Local\Temp\kat66C8.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1696 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat66C8.tmp" & rd /s /q "C:\ProgramData\ECGDAAFIIJDA" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:4844 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:1800
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f