Analysis
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max time kernel
141s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 18:20
Static task
static1
Behavioral task
behavioral1
Sample
5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe
Resource
win10v2004-20240426-en
General
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Target
5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe
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Size
2.0MB
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MD5
88acb36154152d8e6c282496ffd51477
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SHA1
9d12acabc4bd99e30665b1468cb3e620f8af4d27
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SHA256
5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108
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SHA512
3733f5e3f940d46098f5e81e6e010331a39329a866a07af3582e34d26d355908de546e808d6e8b4aa33c31dbc3ab43ce3aeabe7e02c46cc0e4862b9adcb2a84b
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SSDEEP
49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
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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 9 IoCs
Processes:
resource yara_rule behavioral1/memory/1920-2-0x0000000004070000-0x00000000041B9000-memory.dmp family_vidar_v7 behavioral1/memory/2968-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2968-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2968-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2968-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2968-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2968-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2968-53-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2968-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat704E.tmppid process 2968 kat704E.tmp -
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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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
Processes:
5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exedescription pid process target process PID 1920 set thread context of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat704E.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat704E.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat704E.tmppid process 2968 kat704E.tmp 2968 kat704E.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exedescription pid process target process PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp PID 1920 wrote to memory of 2968 1920 5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe kat704E.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe"C:\Users\Admin\AppData\Local\Temp\5c77c1ab3f5e9804f9b1cfd874616d88f65f5694b2af87dd5891d557583e9108.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1920 -
C:\Users\Admin\AppData\Local\Temp\kat704E.tmpC:\Users\Admin\AppData\Local\Temp\kat704E.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2968
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat704E.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1920-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/1920-2-0x0000000004070000-0x00000000041B9000-memory.dmpFilesize
1.3MB
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memory/1920-0-0x00000000006F0000-0x00000000006F1000-memory.dmpFilesize
4KB
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memory/2968-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-22-0x0000000020010000-0x000000002026F000-memory.dmpFilesize
2.4MB
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memory/2968-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-53-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB