Analysis
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max time kernel
146s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-05-2024 23:59
Static task
static1
Behavioral task
behavioral1
Sample
ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe
Resource
win10v2004-20240508-en
General
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Target
ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe
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Size
2.0MB
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MD5
36fdd58da0ee46e8e4fddbfbd283b580
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SHA1
6886a493bdfbfa8aa5948a40557be81353b8c1f2
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SHA256
ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181
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SHA512
d8e2e4df9abfc13cfe243a79f2d4eed0a3b35c7d4df1a6222ea9b62b7184f26c683e8959ef01f2c2db470754bee5a37cbc7015c9a11c43c3bb8aa696a539420f
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SSDEEP
49152:s4K3x1vU+JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18+tIuoITsdZ
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/4496-2-0x0000000004050000-0x0000000004199000-memory.dmp family_vidar_v7 behavioral2/memory/2120-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2120-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat59D8.tmppid process 2120 kat59D8.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:
ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exedescription pid process target process PID 4496 set thread context of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.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:
kat59D8.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat59D8.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1440 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat59D8.tmppid process 2120 kat59D8.tmp 2120 kat59D8.tmp 2120 kat59D8.tmp 2120 kat59D8.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exekat59D8.tmpcmd.exedescription pid process target process PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 4496 wrote to memory of 2120 4496 ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe kat59D8.tmp PID 2120 wrote to memory of 2216 2120 kat59D8.tmp cmd.exe PID 2120 wrote to memory of 2216 2120 kat59D8.tmp cmd.exe PID 2120 wrote to memory of 2216 2120 kat59D8.tmp cmd.exe PID 2216 wrote to memory of 1440 2216 cmd.exe timeout.exe PID 2216 wrote to memory of 1440 2216 cmd.exe timeout.exe PID 2216 wrote to memory of 1440 2216 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe"C:\Users\Admin\AppData\Local\Temp\ca1c2364fd6f5a7492624bb7dedfd6657a54b58612f3fbf9a3ad140d911b7181.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat59D8.tmpC:\Users\Admin\AppData\Local\Temp\kat59D8.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\kat59D8.tmp" & rd /s /q "C:\ProgramData\HDGCFHIDAKEC" & 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\kat59D8.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2120-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-20-0x000000001B800000-0x000000001BA5F000-memory.dmpFilesize
2.4MB
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memory/2120-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2120-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4496-0-0x0000000002470000-0x0000000002471000-memory.dmpFilesize
4KB
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memory/4496-2-0x0000000004050000-0x0000000004199000-memory.dmpFilesize
1.3MB
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memory/4496-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB