Analysis
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max time kernel
90s -
max time network
94s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 03:30
Static task
static1
Behavioral task
behavioral1
Sample
6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe
Resource
win10v2004-20240508-en
General
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Target
6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe
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Size
2.0MB
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MD5
fbceb9fb51287ac1664b24aed6fe6027
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SHA1
7655f33dd6456f792933af0ef6b77ada7ef692ef
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SHA256
6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3
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SHA512
2b2397873e1fa7501a2b20d62aa8736c9b6714af22b45ff62071100192f514e14cadc889056b09be3a50e2909609355877a704023e62cec16113655f1cbfab07
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SSDEEP
49152:OePpQEVJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEVtIuoITsdZ
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/4936-2-0x0000000004240000-0x0000000004389000-memory.dmp family_vidar_v7 behavioral2/memory/4404-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4404-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4404-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4404-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4404-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4404-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4404-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat6949.tmppid process 4404 kat6949.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:
6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exedescription pid process target process PID 4936 set thread context of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat6949.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6949.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat6949.tmppid process 4404 kat6949.tmp 4404 kat6949.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exedescription pid process target process PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp PID 4936 wrote to memory of 4404 4936 6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe kat6949.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe"C:\Users\Admin\AppData\Local\Temp\6a1b36a536af1fc526a66c79a6df44cf2d1131e96b59acfbe38fe6bb01f9d5f3.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat6949.tmpC:\Users\Admin\AppData\Local\Temp\kat6949.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\kat6949.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/4404-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4404-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4404-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4404-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4404-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4404-19-0x000000001B840000-0x000000001BA9F000-memory.dmpFilesize
2.4MB
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memory/4404-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4404-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4936-0-0x00000000025B0000-0x00000000025B1000-memory.dmpFilesize
4KB
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memory/4936-2-0x0000000004240000-0x0000000004389000-memory.dmpFilesize
1.3MB
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memory/4936-9-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB