Analysis
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max time kernel
136s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 19:24
Static task
static1
Behavioral task
behavioral1
Sample
f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe
Resource
win10v2004-20240508-en
General
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Target
f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe
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Size
2.0MB
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MD5
e6eb17823de36eacf740d38e5da90577
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SHA1
bcfd91b6dd25952a7ce42bdebe1887e5b0ad64af
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SHA256
f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558
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SHA512
6ea4a8fffc0b2e6ee32dc2324e470531fa30b6adf798c3bc29b9e1bc6a2f9acdc02777a0aa2fdc2dbe9d4ac73ae3cdcb23bc8ae815a11c2e4800cf150787a0b4
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SSDEEP
49152:7QzHt472DWJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtctIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral1/memory/3132-1-0x0000000004180000-0x00000000042C9000-memory.dmp family_vidar_v7 behavioral1/memory/1504-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1504-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1504-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1504-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1504-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1504-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1504-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4631.tmppid process 1504 kat4631.tmp -
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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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:
f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exedescription pid process target process PID 3132 set thread context of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4631.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4631.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4631.tmppid process 1504 kat4631.tmp 1504 kat4631.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exedescription pid process target process PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp PID 3132 wrote to memory of 1504 3132 f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe kat4631.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe"C:\Users\Admin\AppData\Local\Temp\f4fd015353d1e19f7f7b648827bf55318b0acadf5c55105657c60c30bd7a6558.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4631.tmpC:\Users\Admin\AppData\Local\Temp\kat4631.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
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\kat4631.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1504-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1504-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1504-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1504-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1504-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1504-22-0x0000000025F80000-0x00000000261DF000-memory.dmpFilesize
2.4MB
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memory/1504-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1504-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3132-0-0x00000000023A0000-0x00000000023A1000-memory.dmpFilesize
4KB
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memory/3132-1-0x0000000004180000-0x00000000042C9000-memory.dmpFilesize
1.3MB
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memory/3132-9-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB