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
22-05-2024 21:58
Static task
static1
Behavioral task
behavioral1
Sample
7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe
Resource
win10v2004-20240426-en
General
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Target
7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe
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Size
2.0MB
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MD5
3ee83fa5558ace9b05ce950233d12927
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SHA1
3067c1eec44640be65345339acef2961225f979c
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SHA256
7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b
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SHA512
caa75c5045119f84a80f44ae0b529f09b530d5ddf14b394618fef42da508fc36305d21f9ea3505fa53e9c7fa5a3dfa9b5add0c4f3ee60120689b762731291d28
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SSDEEP
49152:7QzHt472D0JtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt+tIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 14 IoCs
Processes:
resource yara_rule behavioral2/memory/4340-1-0x0000000004240000-0x0000000004389000-memory.dmp family_vidar_v7 behavioral2/memory/4136-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-53-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4136-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5999.tmppid process 4136 kat5999.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:
7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exedescription pid process target process PID 4340 set thread context of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.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:
kat5999.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5999.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4592 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat5999.tmppid process 4136 kat5999.tmp 4136 kat5999.tmp 4136 kat5999.tmp 4136 kat5999.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exekat5999.tmpcmd.exedescription pid process target process PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4340 wrote to memory of 4136 4340 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat5999.tmp PID 4136 wrote to memory of 244 4136 kat5999.tmp cmd.exe PID 4136 wrote to memory of 244 4136 kat5999.tmp cmd.exe PID 4136 wrote to memory of 244 4136 kat5999.tmp cmd.exe PID 244 wrote to memory of 4592 244 cmd.exe timeout.exe PID 244 wrote to memory of 4592 244 cmd.exe timeout.exe PID 244 wrote to memory of 4592 244 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe"C:\Users\Admin\AppData\Local\Temp\7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4340 -
C:\Users\Admin\AppData\Local\Temp\kat5999.tmpC:\Users\Admin\AppData\Local\Temp\kat5999.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4136 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5999.tmp" & rd /s /q "C:\ProgramData\HJKJEHJKJEBG" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:244 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:4592
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5999.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/4136-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-20-0x0000000019430000-0x000000001968F000-memory.dmpFilesize
2.4MB
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memory/4136-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4136-53-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4340-0-0x00000000024A0000-0x00000000024A1000-memory.dmpFilesize
4KB
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memory/4340-1-0x0000000004240000-0x0000000004389000-memory.dmpFilesize
1.3MB
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memory/4340-10-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB