Analysis
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max time kernel
92s -
max time network
97s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
23-05-2024 00:21
Static task
static1
Behavioral task
behavioral1
Sample
19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe
Resource
win10v2004-20240508-en
General
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Target
19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe
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Size
2.0MB
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MD5
aa7905ded270ddabe686567856825cd0
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SHA1
d6e92b3b919c5aea441cdcc9c4968ed409268c5d
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SHA256
19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016
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SHA512
fa6223f9372e20c6cb8b5992e11dd0b7b3afc65baf6e5e05ae45f7a464441d81141cf3b2e6ac4cd89bf6d98bf4758ad26e6725960993ac7751311da39c4a0a9d
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SSDEEP
49152:7QzHt472DZJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt3tIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 13 IoCs
Processes:
resource yara_rule behavioral2/memory/3176-1-0x0000000004190000-0x00000000042D9000-memory.dmp family_vidar_v7 behavioral2/memory/3908-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3908-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5F18.tmppid process 3908 kat5F18.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:
19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exedescription pid process target process PID 3176 set thread context of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.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:
kat5F18.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5F18.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4952 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat5F18.tmppid process 3908 kat5F18.tmp 3908 kat5F18.tmp 3908 kat5F18.tmp 3908 kat5F18.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exekat5F18.tmpcmd.exedescription pid process target process PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3176 wrote to memory of 3908 3176 19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe kat5F18.tmp PID 3908 wrote to memory of 4972 3908 kat5F18.tmp cmd.exe PID 3908 wrote to memory of 4972 3908 kat5F18.tmp cmd.exe PID 3908 wrote to memory of 4972 3908 kat5F18.tmp cmd.exe PID 4972 wrote to memory of 4952 4972 cmd.exe timeout.exe PID 4972 wrote to memory of 4952 4972 cmd.exe timeout.exe PID 4972 wrote to memory of 4952 4972 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe"C:\Users\Admin\AppData\Local\Temp\19274bbfefab7e6df5b7427aa63b4e35243bebbbf9fb85fc7132aca2b7486016.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3176 -
C:\Users\Admin\AppData\Local\Temp\kat5F18.tmpC:\Users\Admin\AppData\Local\Temp\kat5F18.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3908 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5F18.tmp" & rd /s /q "C:\ProgramData\JKJDBAAAEHIE" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:4972 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:4952
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5F18.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3176-1-0x0000000004190000-0x00000000042D9000-memory.dmpFilesize
1.3MB
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memory/3176-0-0x00000000025B0000-0x00000000025B1000-memory.dmpFilesize
4KB
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memory/3176-10-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB
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memory/3908-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-20-0x000000001B870000-0x000000001BACF000-memory.dmpFilesize
2.4MB
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memory/3908-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3908-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB