Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 05:19
Static task
static1
Behavioral task
behavioral1
Sample
1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe
Resource
win7-20240508-en
General
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Target
1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe
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Size
2.0MB
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MD5
a47e621ad2578c0e8642ee28cd603baa
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SHA1
6c34d8037b082f90aad1d23c6bf44e48abf43d6a
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SHA256
1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211
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SHA512
4012a083bd28fe26049a31ef6bd230c5f4531330bcdd8100f890117d7cdb8b85b4f69a389a6e539737ea4e0af7effd13485d96a9d287b0fd4948e207d99fb230
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SSDEEP
49152:s4K3x1vUOJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18OtIuoITsdZ
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/3604-1-0x0000000004100000-0x0000000004249000-memory.dmp family_vidar_v7 behavioral2/memory/2220-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2220-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2220-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2220-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2220-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2220-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2220-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat375C.tmppid process 2220 kat375C.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:
1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exedescription pid process target process PID 3604 set thread context of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat375C.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat375C.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat375C.tmppid process 2220 kat375C.tmp 2220 kat375C.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exedescription pid process target process PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp PID 3604 wrote to memory of 2220 3604 1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe kat375C.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe"C:\Users\Admin\AppData\Local\Temp\1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat375C.tmpC:\Users\Admin\AppData\Local\Temp\kat375C.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\kat375C.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2220-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2220-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2220-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2220-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2220-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2220-23-0x0000000026010000-0x000000002626F000-memory.dmpFilesize
2.4MB
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memory/2220-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2220-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3604-0-0x00000000007C0000-0x00000000007C1000-memory.dmpFilesize
4KB
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memory/3604-1-0x0000000004100000-0x0000000004249000-memory.dmpFilesize
1.3MB
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memory/3604-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB