Analysis
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max time kernel
146s -
max time network
150s -
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 18:43
Static task
static1
Behavioral task
behavioral1
Sample
935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe
Resource
win10v2004-20240226-en
General
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Target
935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe
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Size
2.0MB
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MD5
482ddb12b7d0be49a1de31e6da52ee16
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SHA1
01944c98305d3d0fd4c82a53b6b2977ed936b3a5
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SHA256
935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5
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SHA512
90e574194a3fe836948e952fd52c1a00639ddf04e7b5e20451fb25d21f3d50591f7719adafdf34d776714714f32b86e1940246b50343cb651ab5ff3e82f00385
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SSDEEP
49152:OePpQEpJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEptIuoITsdZ
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/960-1-0x0000000004070000-0x00000000041B9000-memory.dmp family_vidar_v7 behavioral2/memory/3340-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3340-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3340-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3340-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3340-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3340-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3340-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Executes dropped EXE 1 IoCs
Processes:
kat72EE.tmppid process 3340 kat72EE.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:
935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exedescription pid process target process PID 960 set thread context of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat72EE.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat72EE.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat72EE.tmppid process 3340 kat72EE.tmp 3340 kat72EE.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exedescription pid process target process PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp PID 960 wrote to memory of 3340 960 935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe kat72EE.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe"C:\Users\Admin\AppData\Local\Temp\935fad531073e228253cb36c7fa313ff4e97e5c474df1676f584cbbbb1477ec5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat72EE.tmpC:\Users\Admin\AppData\Local\Temp\kat72EE.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\kat72EE.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/960-0-0x0000000000870000-0x0000000000871000-memory.dmpFilesize
4KB
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memory/960-1-0x0000000004070000-0x00000000041B9000-memory.dmpFilesize
1.3MB
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memory/960-9-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB
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memory/3340-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3340-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3340-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3340-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3340-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3340-19-0x0000000019380000-0x00000000195DF000-memory.dmpFilesize
2.4MB
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memory/3340-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3340-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB