Resubmissions
23-05-2024 18:23
240523-w1kdtsbg43 10Analysis
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max time kernel
149s -
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
23-05-2024 18:23
Static task
static1
Behavioral task
behavioral1
Sample
019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe
Resource
win10v2004-20240508-en
General
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Target
019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe
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Size
2.4MB
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MD5
aa088db2fb11c45957afc3e0eddabe43
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SHA1
72b6dfad9d46a341b3f51601e687fd1e30796621
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SHA256
019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9
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SHA512
48d03d6977a0c4b533ae924a9319a280fd2f6952e62d4872ec3abd56245238137258aeda1f7dc04c53e006b9caf78b63bb21acad94474efcd6e77f34e59967ac
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SSDEEP
49152:jxIRJF1HL+VdX68kUqJtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68dqtIuoITsdZ
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/1076-2-0x00000000040E0000-0x0000000004229000-memory.dmp family_vidar_v7 behavioral2/memory/4952-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4952-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4952-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4952-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4952-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4952-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4952-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat536F.tmppid process 4952 kat536F.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:
019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exedescription pid process target process PID 1076 set thread context of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat536F.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat536F.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat536F.tmppid process 4952 kat536F.tmp 4952 kat536F.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exedescription pid process target process PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp PID 1076 wrote to memory of 4952 1076 019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe kat536F.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe"C:\Users\Admin\AppData\Local\Temp\019defb00ac70b5260d5b7c3c8b0b477d4953bc5bac8f42fbec4d7e4aaff72e9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1076 -
C:\Users\Admin\AppData\Local\Temp\kat536F.tmpC:\Users\Admin\AppData\Local\Temp\kat536F.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4952
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat536F.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1076-0-0x00000000023E0000-0x00000000023E1000-memory.dmpFilesize
4KB
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memory/1076-2-0x00000000040E0000-0x0000000004229000-memory.dmpFilesize
1.3MB
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memory/1076-9-0x0000000000400000-0x0000000000678000-memory.dmpFilesize
2.5MB
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memory/4952-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4952-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4952-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4952-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4952-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4952-22-0x000000001B840000-0x000000001BA9F000-memory.dmpFilesize
2.4MB
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memory/4952-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4952-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB