Analysis
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max time kernel
146s -
max time network
152s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-05-2024 21:07
Static task
static1
Behavioral task
behavioral1
Sample
17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe
Resource
win10v2004-20240426-en
General
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Target
17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe
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Size
2.0MB
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MD5
3bf4b95a00e7e3f2bf6f348729356a9e
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SHA1
535f17c394d408a69ed8678478c05a2b440a03c3
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SHA256
17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402
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SHA512
a117fd1aa62438715cd3906bf0d04b157ea86997aee52ba52132ef21fe96346beee6ac77544edca3156a536f539570edef8661721fd30e49ccadbaeff36f5e4d
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SSDEEP
49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ
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 14 IoCs
Processes:
resource yara_rule behavioral2/memory/2444-2-0x0000000004090000-0x00000000041D9000-memory.dmp family_vidar_v7 behavioral2/memory/3660-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3660-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4B90.tmppid process 3660 kat4B90.tmp -
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 local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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
Processes:
17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exedescription pid process target process PID 2444 set thread context of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp -
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.
Processes:
kat4B90.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4B90.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1932 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4B90.tmppid process 3660 kat4B90.tmp 3660 kat4B90.tmp 3660 kat4B90.tmp 3660 kat4B90.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exekat4B90.tmpcmd.exedescription pid process target process PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 2444 wrote to memory of 3660 2444 17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe kat4B90.tmp PID 3660 wrote to memory of 832 3660 kat4B90.tmp cmd.exe PID 3660 wrote to memory of 832 3660 kat4B90.tmp cmd.exe PID 3660 wrote to memory of 832 3660 kat4B90.tmp cmd.exe PID 832 wrote to memory of 1932 832 cmd.exe timeout.exe PID 832 wrote to memory of 1932 832 cmd.exe timeout.exe PID 832 wrote to memory of 1932 832 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe"C:\Users\Admin\AppData\Local\Temp\17f603f7a4512dda63bcf10410831f35cdf2bf8f2f9bd92267efc94e7394c402.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4B90.tmpC:\Users\Admin\AppData\Local\Temp\kat4B90.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4B90.tmp" & rd /s /q "C:\ProgramData\JJJKFBAAAFHJ" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4B90.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2444-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/2444-2-0x0000000004090000-0x00000000041D9000-memory.dmpFilesize
1.3MB
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memory/2444-0-0x0000000002360000-0x0000000002361000-memory.dmpFilesize
4KB
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memory/3660-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-19-0x0000000019430000-0x000000001968F000-memory.dmpFilesize
2.4MB
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memory/3660-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3660-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB