Analysis
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max time kernel
90s -
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
25-05-2024 21:38
Static task
static1
Behavioral task
behavioral1
Sample
23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe
Resource
win10v2004-20240226-en
General
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Target
23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe
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Size
2.0MB
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MD5
48d3bfafb47510d674a11414270851cd
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SHA1
a7c3a0cae2f0335f370eefa03ec94861d709d5fe
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SHA256
23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab
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SHA512
f871b57f3c477ace85a6d795298e3b0462e0408b785c6ba8bceadd785e4151ebe3e709cae40872ec06612c6f8f04e5aa463ac08a2525f0fe17565bbcee6a4fa2
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SSDEEP
49152:s4K3x1vUqJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18qtIuoITsdZ
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 14 IoCs
Processes:
resource yara_rule behavioral2/memory/1100-2-0x0000000004050000-0x0000000004199000-memory.dmp family_vidar_v7 behavioral2/memory/2840-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2840-69-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat378B.tmppid process 2840 kat378B.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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:
23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exedescription pid process target process PID 1100 set thread context of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.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 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat378B.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat378B.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1896 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat378B.tmppid process 2840 kat378B.tmp 2840 kat378B.tmp 2840 kat378B.tmp 2840 kat378B.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exekat378B.tmpcmd.exedescription pid process target process PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 1100 wrote to memory of 2840 1100 23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe kat378B.tmp PID 2840 wrote to memory of 1432 2840 kat378B.tmp cmd.exe PID 2840 wrote to memory of 1432 2840 kat378B.tmp cmd.exe PID 2840 wrote to memory of 1432 2840 kat378B.tmp cmd.exe PID 1432 wrote to memory of 1896 1432 cmd.exe timeout.exe PID 1432 wrote to memory of 1896 1432 cmd.exe timeout.exe PID 1432 wrote to memory of 1896 1432 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe"C:\Users\Admin\AppData\Local\Temp\23593481dc5630ec73ebe061015378716b31902c3087b4d111bec9b6bc11d6ab.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1100 -
C:\Users\Admin\AppData\Local\Temp\kat378B.tmpC:\Users\Admin\AppData\Local\Temp\kat378B.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2840 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat378B.tmp" & rd /s /q "C:\ProgramData\KFBGDBFBKKJE" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:1432 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:1896
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat378B.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1100-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/1100-2-0x0000000004050000-0x0000000004199000-memory.dmpFilesize
1.3MB
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memory/1100-0-0x0000000002360000-0x0000000002361000-memory.dmpFilesize
4KB
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memory/2840-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-23-0x0000000026050000-0x00000000262AF000-memory.dmpFilesize
2.4MB
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memory/2840-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2840-69-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB