Analysis
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max time kernel
90s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-05-2024 18:41
Static task
static1
Behavioral task
behavioral1
Sample
a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe
Resource
win10v2004-20240426-en
General
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Target
a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe
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Size
2.0MB
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MD5
7e88544a6669bde4cdb5a33adde6b41f
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SHA1
db4a58dccfae7e7be7fb4f5907b8f350fd63740d
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SHA256
a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed
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SHA512
1f5e3cfdc1a4dc1cfe983077171b90470d1004876a890d0c07ffdf1728249974ee42608569433cfd48dcc51c360ea76ca372f9e447af3ce601cdef4d84be1624
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SSDEEP
49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ
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/3440-3-0x0000000004060000-0x00000000041A9000-memory.dmp family_vidar_v7 behavioral2/memory/3480-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3480-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3480-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3480-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3480-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3480-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3480-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4362.tmppid process 3480 kat4362.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:
a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exedescription pid process target process PID 3440 set thread context of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4362.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4362.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4362.tmppid process 3480 kat4362.tmp 3480 kat4362.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exedescription pid process target process PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp PID 3440 wrote to memory of 3480 3440 a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe kat4362.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe"C:\Users\Admin\AppData\Local\Temp\a7177878bd34c33ddf038dad6dae7598d61a253ce0c511ea8560404a32e2a3ed.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3440 -
C:\Users\Admin\AppData\Local\Temp\kat4362.tmpC:\Users\Admin\AppData\Local\Temp\kat4362.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3480
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4362.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3440-0-0x0000000002470000-0x0000000002471000-memory.dmpFilesize
4KB
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memory/3440-3-0x0000000004060000-0x00000000041A9000-memory.dmpFilesize
1.3MB
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memory/3440-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/3480-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3480-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3480-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3480-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3480-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3480-22-0x00000000260B0000-0x000000002630F000-memory.dmpFilesize
2.4MB
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memory/3480-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3480-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB