Analysis
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max time kernel
91s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 13:55
Static task
static1
Behavioral task
behavioral1
Sample
2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe
Resource
win10v2004-20240508-en
General
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Target
2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe
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Size
1.9MB
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MD5
12862e9bed4ddfccbe750818e74f6a6d
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SHA1
d6da38fdffaa4e9492cea994c2901e903c08a314
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SHA256
2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d
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SHA512
e578d8b7ba713d108c6482de545fb792440ef5a3325396dc4b0a8d275e2ef5b70d260541041b9caf0ac336a679b81dbbff02d9fcf25eb67f59a73b29b0149f70
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SSDEEP
49152:CdKfTn6vCJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnhtIuoITsdZ
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/3120-3-0x0000000004060000-0x00000000041A9000-memory.dmp family_vidar_v7 behavioral2/memory/4476-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4476-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4476-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4476-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4476-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4476-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4476-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat442D.tmppid process 4476 kat442D.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:
2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exedescription pid process target process PID 3120 set thread context of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat442D.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat442D.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat442D.tmppid process 4476 kat442D.tmp 4476 kat442D.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exedescription pid process target process PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp PID 3120 wrote to memory of 4476 3120 2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe kat442D.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe"C:\Users\Admin\AppData\Local\Temp\2c501d4622cef2b9e72eb83431f3cec514d3bd3fef5b28caf27d7ff2257d879d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat442D.tmpC:\Users\Admin\AppData\Local\Temp\kat442D.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\kat442D.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3120-0-0x00000000008B0000-0x00000000008B1000-memory.dmpFilesize
4KB
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memory/3120-3-0x0000000004060000-0x00000000041A9000-memory.dmpFilesize
1.3MB
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memory/3120-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/4476-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4476-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4476-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4476-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4476-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4476-22-0x000000001B870000-0x000000001BACF000-memory.dmpFilesize
2.4MB
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memory/4476-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4476-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB