Analysis
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max time kernel
146s -
max time network
152s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
01-07-2024 04:12
Static task
static1
Behavioral task
behavioral1
Sample
ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe
Resource
win10v2004-20240508-en
General
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Target
ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe
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Size
2.2MB
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MD5
9ccb9a62815ce0472abdcd31039497d8
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SHA1
472c33727c771af5cf829a9c40e3f85725a1fe5a
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SHA256
ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4
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SHA512
fe0927252bc9f82cc9f57c70135c4472f8d2e5c7dd949bb900811caf5919600200e75fdc26b2b00f7dad79a9515edbd86676dd86fd871fc6d9ab2ae99e6e9d71
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SSDEEP
24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXTYU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPb21tuuIeNHYGY0LzjsJxK
Malware Config
Extracted
vidar
https://t.me/g067n
https://steamcommunity.com/profiles/76561199707802586
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
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Detect Vidar Stealer 9 IoCs
Processes:
resource yara_rule behavioral2/memory/2244-2-0x0000000004190000-0x00000000042A3000-memory.dmp family_vidar_v7 behavioral2/memory/1056-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1056-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1056-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1056-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1056-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1056-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1056-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral2/memory/1056-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Executes dropped EXE 1 IoCs
Processes:
kat87ED.tmppid process 1056 kat87ED.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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:
ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exedescription pid process target process PID 2244 set thread context of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat87ED.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat87ED.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat87ED.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 556 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
kat87ED.tmppid process 1056 kat87ED.tmp 1056 kat87ED.tmp 1056 kat87ED.tmp 1056 kat87ED.tmp 1056 kat87ED.tmp 1056 kat87ED.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exekat87ED.tmpcmd.exedescription pid process target process PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 2244 wrote to memory of 1056 2244 ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe kat87ED.tmp PID 1056 wrote to memory of 2644 1056 kat87ED.tmp cmd.exe PID 1056 wrote to memory of 2644 1056 kat87ED.tmp cmd.exe PID 1056 wrote to memory of 2644 1056 kat87ED.tmp cmd.exe PID 2644 wrote to memory of 556 2644 cmd.exe timeout.exe PID 2644 wrote to memory of 556 2644 cmd.exe timeout.exe PID 2644 wrote to memory of 556 2644 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe"C:\Users\Admin\AppData\Local\Temp\ac3e0c5b52a68acd4088ea9612b78f2fbc077a2f6ca1bec8de115698c07d81e4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat87ED.tmpC:\Users\Admin\AppData\Local\Temp\kat87ED.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat87ED.tmp" & rd /s /q "C:\ProgramData\AAKEGDAKEHJD" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat87ED.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1056-10-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1056-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1056-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1056-11-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1056-12-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1056-14-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1056-13-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/1056-15-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2244-0-0x0000000000900000-0x0000000000901000-memory.dmpFilesize
4KB
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memory/2244-2-0x0000000004190000-0x00000000042A3000-memory.dmpFilesize
1.1MB
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memory/2244-9-0x0000000000400000-0x0000000000641000-memory.dmpFilesize
2.3MB