Analysis
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max time kernel
136s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 19:26
Static task
static1
Behavioral task
behavioral1
Sample
f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe
Resource
win10v2004-20240426-en
General
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Target
f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe
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Size
2.0MB
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MD5
ef18a99c8b9723393649c6ca4cc933e8
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SHA1
54a536648b045b164f18a3475d84dd017619335c
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SHA256
f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853
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SHA512
134c1eb25a1dbc7a3d78ad60ab477b8b9082bff58b5629f7ca8a43388ba6cd64de7985c927eb092fc2d765c1199cf6b49af292586bdcf0abb06048ce1930f3ad
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SSDEEP
49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ
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 8 IoCs
Processes:
resource yara_rule behavioral1/memory/2724-1-0x0000000003FE0000-0x0000000004129000-memory.dmp family_vidar_v7 behavioral1/memory/1252-7-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1252-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1252-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1252-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1252-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1252-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1252-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat542B.tmppid process 1252 kat542B.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:
f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exedescription pid process target process PID 2724 set thread context of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat542B.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat542B.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat542B.tmppid process 1252 kat542B.tmp 1252 kat542B.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exedescription pid process target process PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp PID 2724 wrote to memory of 1252 2724 f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe kat542B.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe"C:\Users\Admin\AppData\Local\Temp\f543ee25ee0f551896faa26825d76a06057d243cbe53a1e79935ef57beede853.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2724 -
C:\Users\Admin\AppData\Local\Temp\kat542B.tmpC:\Users\Admin\AppData\Local\Temp\kat542B.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1252
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat542B.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1252-7-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1252-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1252-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1252-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1252-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1252-20-0x000000001DC30000-0x000000001DE8F000-memory.dmpFilesize
2.4MB
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memory/1252-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1252-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2724-0-0x00000000007D0000-0x00000000007D1000-memory.dmpFilesize
4KB
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memory/2724-1-0x0000000003FE0000-0x0000000004129000-memory.dmpFilesize
1.3MB
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memory/2724-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB