Analysis
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max time kernel
92s -
max time network
94s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 00:10
Static task
static1
Behavioral task
behavioral1
Sample
573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe
Resource
win10v2004-20240426-en
General
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Target
573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe
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Size
2.0MB
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MD5
8e8a940997b272727b62d6ec2402e812
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SHA1
93e917078ae532df79133dfa42ae6dd1f2388492
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SHA256
573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d
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SHA512
c4f7314ee4c3948297e4b65396177d0b7fb4d0c417f59fdb4ff4d307d7438cb2b55cf297a0fefdeedbba3974d36e10cbb9a4b1ba766c19eaa327809c28c5cb3a
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SSDEEP
49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ
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/3412-1-0x0000000004050000-0x0000000004199000-memory.dmp family_vidar_v7 behavioral2/memory/5036-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/5036-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5554.tmppid process 5036 kat5554.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:
573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exedescription pid process target process PID 3412 set thread context of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.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:
kat5554.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5554.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1984 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat5554.tmppid process 5036 kat5554.tmp 5036 kat5554.tmp 5036 kat5554.tmp 5036 kat5554.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exekat5554.tmpcmd.exedescription pid process target process PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 3412 wrote to memory of 5036 3412 573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe kat5554.tmp PID 5036 wrote to memory of 1732 5036 kat5554.tmp cmd.exe PID 5036 wrote to memory of 1732 5036 kat5554.tmp cmd.exe PID 5036 wrote to memory of 1732 5036 kat5554.tmp cmd.exe PID 1732 wrote to memory of 1984 1732 cmd.exe timeout.exe PID 1732 wrote to memory of 1984 1732 cmd.exe timeout.exe PID 1732 wrote to memory of 1984 1732 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe"C:\Users\Admin\AppData\Local\Temp\573487b20df220ed0e0b7e17124fad119d8473b6f9ff8f839a75fe721887927d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat5554.tmpC:\Users\Admin\AppData\Local\Temp\kat5554.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\kat5554.tmp" & rd /s /q "C:\ProgramData\CAKFIJDHJEGI" & 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\kat5554.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3412-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/3412-1-0x0000000004050000-0x0000000004199000-memory.dmpFilesize
1.3MB
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memory/3412-0-0x0000000002470000-0x0000000002471000-memory.dmpFilesize
4KB
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memory/5036-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-19-0x00000000193F0000-0x000000001964F000-memory.dmpFilesize
2.4MB
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memory/5036-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/5036-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB