Analysis
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max time kernel
133s -
max time network
102s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 15:16
Static task
static1
Behavioral task
behavioral1
Sample
a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe
Resource
win10v2004-20240508-en
General
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Target
a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe
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Size
2.0MB
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MD5
207f7d400d295321f455790883173d8e
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SHA1
f73d9cc881c1ae8fbf47853199ed198f4aeee17e
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SHA256
a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50
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SHA512
a9a671fd14017fd4db3819df78a2af8dce70f9c322c05852b6ac7326c786878042f27c52f58170799f0fae68d3c9aeb1d759914b5a9f6736b72b91af7f7d181a
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SSDEEP
49152:s4K3x1vUGJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18GtIuoITsdZ
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/2992-1-0x0000000003FE0000-0x0000000004129000-memory.dmp family_vidar_v7 behavioral1/memory/4420-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4420-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4420-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4420-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4420-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4420-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4420-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4F97.tmppid process 4420 kat4F97.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:
a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exedescription pid process target process PID 2992 set thread context of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4F97.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4F97.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4F97.tmppid process 4420 kat4F97.tmp 4420 kat4F97.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exedescription pid process target process PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp PID 2992 wrote to memory of 4420 2992 a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe kat4F97.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe"C:\Users\Admin\AppData\Local\Temp\a815346e6d4e72dd6517d000f17c21ce8c3b066bd1b45dd22a19e5ea0c481e50.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4F97.tmpC:\Users\Admin\AppData\Local\Temp\kat4F97.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4F97.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2992-0-0x0000000002270000-0x0000000002271000-memory.dmpFilesize
4KB
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memory/2992-1-0x0000000003FE0000-0x0000000004129000-memory.dmpFilesize
1.3MB
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memory/2992-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/4420-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4420-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4420-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4420-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4420-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4420-17-0x00000000192A0000-0x00000000194FF000-memory.dmpFilesize
2.4MB
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memory/4420-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4420-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB