Analysis
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max time kernel
90s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-05-2024 22:38
Static task
static1
Behavioral task
behavioral1
Sample
d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe
Resource
win10v2004-20240426-en
General
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Target
d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe
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Size
2.0MB
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MD5
0905439ea339730f9590d344fa64a72d
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SHA1
59295ff894f904ec581b596792a2cf74ebb1a0a0
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SHA256
d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf
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SHA512
14134fd755dc410ff19d869a630f05ce6ede980cf217a4ab121e0d41081e3dcc6e4793effe2f88c1e8ec15f71f0d571bb581f5f3ea9fbd9011798c68b6ce2fc1
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SSDEEP
49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ
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/2404-3-0x0000000004050000-0x0000000004199000-memory.dmp family_vidar_v7 behavioral2/memory/3188-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3188-71-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5B10.tmppid process 3188 kat5B10.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:
d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exedescription pid process target process PID 2404 set thread context of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.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:
kat5B10.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5B10.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3948 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat5B10.tmppid process 3188 kat5B10.tmp 3188 kat5B10.tmp 3188 kat5B10.tmp 3188 kat5B10.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exekat5B10.tmpcmd.exedescription pid process target process PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 2404 wrote to memory of 3188 2404 d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe kat5B10.tmp PID 3188 wrote to memory of 4220 3188 kat5B10.tmp cmd.exe PID 3188 wrote to memory of 4220 3188 kat5B10.tmp cmd.exe PID 3188 wrote to memory of 4220 3188 kat5B10.tmp cmd.exe PID 4220 wrote to memory of 3948 4220 cmd.exe timeout.exe PID 4220 wrote to memory of 3948 4220 cmd.exe timeout.exe PID 4220 wrote to memory of 3948 4220 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe"C:\Users\Admin\AppData\Local\Temp\d63abd329879e78461810f9a89b75cf749017a5b31e3483269beb341721d7adf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat5B10.tmpC:\Users\Admin\AppData\Local\Temp\kat5B10.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\kat5B10.tmp" & rd /s /q "C:\ProgramData\CBAKEBGIIDAF" & 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
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5B10.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2404-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/2404-3-0x0000000004050000-0x0000000004199000-memory.dmpFilesize
1.3MB
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memory/2404-0-0x0000000002460000-0x0000000002461000-memory.dmpFilesize
4KB
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memory/3188-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-22-0x000000001B880000-0x000000001BADF000-memory.dmpFilesize
2.4MB
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memory/3188-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3188-71-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB