Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 01:31
Static task
static1
Behavioral task
behavioral1
Sample
04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe
Resource
win10v2004-20240508-en
General
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Target
04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe
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Size
2.0MB
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MD5
cc63b9c7489d07e6d4fd5074accd510c
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SHA1
d56cd93a4f4c181ad057693a77ad86fd7d41fcf1
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SHA256
04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35
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SHA512
2dc3b9a470d822b7e607b07c8a7ec93a73230a77cbeb8cf485bc2b3042c7afd6ea3c10b85adc8803e339cd0d45cd63a76576bb47f01edc624f3a2d3fb17b14ac
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SSDEEP
49152:7QzHt472DxJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtTtIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral1/memory/232-1-0x00000000041D0000-0x0000000004319000-memory.dmp family_vidar_v7 behavioral1/memory/184-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/184-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/184-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/184-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/184-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/184-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/184-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4F68.tmppid process 184 kat4F68.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:
04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exedescription pid process target process PID 232 set thread context of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4F68.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4F68.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4F68.tmppid process 184 kat4F68.tmp 184 kat4F68.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exedescription pid process target process PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp PID 232 wrote to memory of 184 232 04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe kat4F68.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe"C:\Users\Admin\AppData\Local\Temp\04a4c939069d40961567895f539aa5f2b6d8e98a1095f6a17a45aafa1613de35.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4F68.tmpC:\Users\Admin\AppData\Local\Temp\kat4F68.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\kat4F68.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/184-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/184-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/184-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/184-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/184-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/184-17-0x000000001DC60000-0x000000001DEBF000-memory.dmpFilesize
2.4MB
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memory/184-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/184-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/232-0-0x00000000023A0000-0x00000000023A1000-memory.dmpFilesize
4KB
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memory/232-1-0x00000000041D0000-0x0000000004319000-memory.dmpFilesize
1.3MB
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memory/232-9-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB