Analysis
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max time kernel
146s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 10:11
Static task
static1
Behavioral task
behavioral1
Sample
976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe
Resource
win10v2004-20240226-en
General
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Target
976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe
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Size
2.0MB
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MD5
c83362c925fc54cfff05527b2ad83895
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SHA1
7f257ae61d0a6d5e79500789780a2bca87796d55
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SHA256
976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477
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SHA512
8effc1f3b5da568349393427a0464c75a8a39fd44d5c26ea46c42e7ee6c1e8b01184a39e587301a6e5e0619595c6e4dd5db784552c55a718e6178051e51fce18
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SSDEEP
49152:OePpQE1JtTF+TxMoxc1TU+j+dAzGwlrh:OePpQE1tIuoITsdZ
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 behavioral2/memory/3324-4-0x00000000040E0000-0x0000000004229000-memory.dmp family_vidar_v7 behavioral2/memory/3452-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3452-7-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3452-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3452-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3452-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3452-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3452-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat598A.tmppid process 3452 kat598A.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:
976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exedescription pid process target process PID 3324 set thread context of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat598A.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat598A.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat598A.tmppid process 3452 kat598A.tmp 3452 kat598A.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exedescription pid process target process PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp PID 3324 wrote to memory of 3452 3324 976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe kat598A.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe"C:\Users\Admin\AppData\Local\Temp\976354b1243ffe869c3287ed8c53583698c47f0d416415d30f4f7da5f5850477.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat598A.tmpC:\Users\Admin\AppData\Local\Temp\kat598A.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\kat598A.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3324-0-0x00000000008D0000-0x00000000008D1000-memory.dmpFilesize
4KB
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memory/3324-4-0x00000000040E0000-0x0000000004229000-memory.dmpFilesize
1.3MB
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memory/3324-10-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB
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memory/3452-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3452-7-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3452-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3452-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3452-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3452-22-0x0000000026060000-0x00000000262BF000-memory.dmpFilesize
2.4MB
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memory/3452-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3452-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB