Analysis
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max time kernel
137s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-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 13 IoCs
Processes:
resource yara_rule behavioral1/memory/3564-2-0x00000000040B0000-0x00000000041F9000-memory.dmp family_vidar_v7 behavioral1/memory/4868-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-39-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-56-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4868-69-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat39DC.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation kat39DC.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat39DC.tmppid process 4868 kat39DC.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 3564 set thread context of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.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:
kat39DC.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat39DC.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3040 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat39DC.tmppid process 4868 kat39DC.tmp 4868 kat39DC.tmp 4868 kat39DC.tmp 4868 kat39DC.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exekat39DC.tmpcmd.exedescription pid process target process PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 3564 wrote to memory of 4868 3564 7680303f52c11fd5672608e5f901bac721b936ab0db0b170e3675c3e9891845b.exe kat39DC.tmp PID 4868 wrote to memory of 4512 4868 kat39DC.tmp cmd.exe PID 4868 wrote to memory of 4512 4868 kat39DC.tmp cmd.exe PID 4868 wrote to memory of 4512 4868 kat39DC.tmp cmd.exe PID 4512 wrote to memory of 3040 4512 cmd.exe timeout.exe PID 4512 wrote to memory of 3040 4512 cmd.exe timeout.exe PID 4512 wrote to memory of 3040 4512 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
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C:\Users\Admin\AppData\Local\Temp\kat39DC.tmpC:\Users\Admin\AppData\Local\Temp\kat39DC.tmp2⤵
- Checks computer location settings
- 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\kat39DC.tmp" & rd /s /q "C:\ProgramData\IJKFHDBKFCAA" & 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\kat39DC.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3564-2-0x00000000040B0000-0x00000000041F9000-memory.dmpFilesize
1.3MB
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memory/3564-9-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB
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memory/3564-0-0x00000000007C0000-0x00000000007C1000-memory.dmpFilesize
4KB
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memory/4868-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-23-0x00000000224B0000-0x000000002270F000-memory.dmpFilesize
2.4MB
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memory/4868-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-39-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-56-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4868-69-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB