Analysis
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max time kernel
79s -
max time network
102s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
30-06-2024 21:42
Static task
static1
Behavioral task
behavioral1
Sample
19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe
Resource
win10v2004-20240508-en
General
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Target
19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe
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Size
2.2MB
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MD5
779260700d99230fb8759335cde0dc92
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SHA1
e0a347b0ef9ee345b3f11a1ceef8434a258d9d4f
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SHA256
19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e
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SHA512
c1488094f891b987391b103e186fc1f7624b6bfb43c4c14a56f721aebca452ae5f195b6da0b7708d8b84e4fa703963858b3a2bad43c6979fe20b7958b7ec4b84
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SSDEEP
24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXbiU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MP121tuuIeNHYGY0LzjsJxK
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 behavioral1/memory/1984-1-0x0000000004170000-0x0000000004283000-memory.dmp family_vidar_v7 behavioral1/memory/2672-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/2672-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/2672-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/2672-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/2672-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/2672-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/2672-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/2672-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat350A.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation kat350A.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat350A.tmppid process 2672 kat350A.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:
19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exedescription pid process target process PID 1984 set thread context of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.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:
kat350A.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat350A.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat350A.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2580 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
kat350A.tmppid process 2672 kat350A.tmp 2672 kat350A.tmp 2672 kat350A.tmp 2672 kat350A.tmp 2672 kat350A.tmp 2672 kat350A.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exekat350A.tmpcmd.exedescription pid process target process PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 1984 wrote to memory of 2672 1984 19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe kat350A.tmp PID 2672 wrote to memory of 3996 2672 kat350A.tmp cmd.exe PID 2672 wrote to memory of 3996 2672 kat350A.tmp cmd.exe PID 2672 wrote to memory of 3996 2672 kat350A.tmp cmd.exe PID 3996 wrote to memory of 2580 3996 cmd.exe timeout.exe PID 3996 wrote to memory of 2580 3996 cmd.exe timeout.exe PID 3996 wrote to memory of 2580 3996 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe"C:\Users\Admin\AppData\Local\Temp\19caf0c6cb3ed75abff85a26dc2c4f2ab685544642bc4bba436b36e3878db89e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat350A.tmpC:\Users\Admin\AppData\Local\Temp\kat350A.tmp2⤵
- Checks computer location settings
- 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\kat350A.tmp" & rd /s /q "C:\ProgramData\AFHJJEHIEBKK" & 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\kat350A.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1984-0-0x0000000000830000-0x0000000000831000-memory.dmpFilesize
4KB
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memory/1984-1-0x0000000004170000-0x0000000004283000-memory.dmpFilesize
1.1MB
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memory/1984-9-0x0000000000400000-0x0000000000641000-memory.dmpFilesize
2.3MB
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memory/2672-10-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2672-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2672-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2672-11-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2672-12-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2672-13-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2672-14-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2672-15-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB