Analysis
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max time kernel
92s -
max time network
93s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-05-2024 22:49
Static task
static1
Behavioral task
behavioral1
Sample
6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe
Resource
win10v2004-20240426-en
General
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Target
6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe
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Size
2.0MB
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MD5
9f05eb816ecf831ec641daecc051282a
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SHA1
36350c0f82f3f1b79461f7d7887e1824062c34ab
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SHA256
6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9
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SHA512
b54f5286e81c4b13e37f5029407144aaf1beb71d9142c893eebbbab6f55ba140470cbc655a196923122e64550cac97b00e8671d16b65c75e33c3380b0d44c241
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SSDEEP
49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ
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/4496-2-0x0000000004210000-0x0000000004359000-memory.dmp family_vidar_v7 behavioral2/memory/3796-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3796-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat37F8.tmppid process 3796 kat37F8.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:
6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exedescription pid process target process PID 4496 set thread context of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.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:
kat37F8.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat37F8.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2668 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat37F8.tmppid process 3796 kat37F8.tmp 3796 kat37F8.tmp 3796 kat37F8.tmp 3796 kat37F8.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exekat37F8.tmpcmd.exedescription pid process target process PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 4496 wrote to memory of 3796 4496 6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe kat37F8.tmp PID 3796 wrote to memory of 2140 3796 kat37F8.tmp cmd.exe PID 3796 wrote to memory of 2140 3796 kat37F8.tmp cmd.exe PID 3796 wrote to memory of 2140 3796 kat37F8.tmp cmd.exe PID 2140 wrote to memory of 2668 2140 cmd.exe timeout.exe PID 2140 wrote to memory of 2668 2140 cmd.exe timeout.exe PID 2140 wrote to memory of 2668 2140 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe"C:\Users\Admin\AppData\Local\Temp\6ebf361a51b9dd9db3b3bc71a1f1891748f6f3b89f1991ef06bc9a7a587c4ef9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat37F8.tmpC:\Users\Admin\AppData\Local\Temp\kat37F8.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\kat37F8.tmp" & rd /s /q "C:\ProgramData\HCAEHJJKFCAA" & 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
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat37F8.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3796-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-19-0x00000000193A0000-0x00000000195FF000-memory.dmpFilesize
2.4MB
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memory/3796-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3796-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4496-0-0x00000000024B0000-0x00000000024B1000-memory.dmpFilesize
4KB
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memory/4496-2-0x0000000004210000-0x0000000004359000-memory.dmpFilesize
1.3MB
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memory/4496-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB