Analysis
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max time kernel
92s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 08:48
Static task
static1
Behavioral task
behavioral1
Sample
f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe
Resource
win10v2004-20240508-en
General
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Target
f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe
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Size
2.0MB
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MD5
aa62593a6f4d6a053922894e654983e3
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SHA1
e1e6ec3511a2b61dfbdf3bccd7a531a2834cc05e
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SHA256
f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf
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SHA512
bb16192b859d99dbd259dc4cf7313a25abc0a405f45be8a3aa395c59df1da51af4cf3c986a28aac383d261e3b38fb69551c46dbbe3f0f31fd33385793feeb81f
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SSDEEP
49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ
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/3644-1-0x0000000004030000-0x0000000004179000-memory.dmp family_vidar_v7 behavioral2/memory/2372-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2372-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2372-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2372-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2372-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2372-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2372-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat6AFE.tmppid process 2372 kat6AFE.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:
f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exedescription pid process target process PID 3644 set thread context of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat6AFE.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6AFE.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat6AFE.tmppid process 2372 kat6AFE.tmp 2372 kat6AFE.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exedescription pid process target process PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp PID 3644 wrote to memory of 2372 3644 f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe kat6AFE.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe"C:\Users\Admin\AppData\Local\Temp\f2524afdb9b436bae069fd6bf8922db4d979742e8f9cd6aec918fb5eb24d4edf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat6AFE.tmpC:\Users\Admin\AppData\Local\Temp\kat6AFE.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\kat6AFE.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2372-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2372-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2372-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2372-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2372-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2372-22-0x0000000026020000-0x000000002627F000-memory.dmpFilesize
2.4MB
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memory/2372-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2372-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3644-0-0x0000000002570000-0x0000000002571000-memory.dmpFilesize
4KB
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memory/3644-1-0x0000000004030000-0x0000000004179000-memory.dmpFilesize
1.3MB
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memory/3644-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB