Analysis
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max time kernel
92s -
max time network
94s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
24-05-2024 21:49
Static task
static1
Behavioral task
behavioral1
Sample
cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe
Resource
win10v2004-20240508-en
General
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Target
cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe
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Size
2.0MB
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MD5
5f0a33f1d64e3bce395a5307d821d2c7
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SHA1
74b9b6f266d3a24d10e64d2973068b26a155bd76
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SHA256
cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c
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SHA512
c6453d1c34ccb33e41e0d3454e0582977a80baa85f1f1c20125fc7ad04b5dfc32c3d94dad575a87c5ac895adbf493acee7377cd56b04df5a4edb5aa7e75a0695
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SSDEEP
49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ
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 behavioral1/memory/2432-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2672-3-0x00000000040B0000-0x00000000041F9000-memory.dmp family_vidar_v7 behavioral1/memory/2432-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-49-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-50-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-61-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2432-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat4844.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation kat4844.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat4844.tmppid process 2432 kat4844.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:
cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exedescription pid process target process PID 2672 set thread context of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.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:
kat4844.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4844.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 5096 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4844.tmppid process 2432 kat4844.tmp 2432 kat4844.tmp 2432 kat4844.tmp 2432 kat4844.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exekat4844.tmpcmd.exedescription pid process target process PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2672 wrote to memory of 2432 2672 cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe kat4844.tmp PID 2432 wrote to memory of 4636 2432 kat4844.tmp cmd.exe PID 2432 wrote to memory of 4636 2432 kat4844.tmp cmd.exe PID 2432 wrote to memory of 4636 2432 kat4844.tmp cmd.exe PID 4636 wrote to memory of 5096 4636 cmd.exe timeout.exe PID 4636 wrote to memory of 5096 4636 cmd.exe timeout.exe PID 4636 wrote to memory of 5096 4636 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe"C:\Users\Admin\AppData\Local\Temp\cb2911ac6c8d023c719709787a3c4fbb44d3f2b5a07a7dd8c4727cff44ce106c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2672 -
C:\Users\Admin\AppData\Local\Temp\kat4844.tmpC:\Users\Admin\AppData\Local\Temp\kat4844.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2432 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4844.tmp" & rd /s /q "C:\ProgramData\EBAEBFIIECBG" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:4636 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:5096
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4844.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2432-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-61-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-17-0x000000001B760000-0x000000001B9BF000-memory.dmpFilesize
2.4MB
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memory/2432-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-49-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-50-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2432-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2672-3-0x00000000040B0000-0x00000000041F9000-memory.dmpFilesize
1.3MB
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memory/2672-0-0x0000000002260000-0x0000000002261000-memory.dmpFilesize
4KB
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memory/2672-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB