Analysis
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max time kernel
147s -
max time network
150s -
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 16:16
Static task
static1
Behavioral task
behavioral1
Sample
03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe
Resource
win10v2004-20240508-en
General
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Target
03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe
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Size
2.0MB
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MD5
5c76d2db57995b3b4b79e821e73753e6
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SHA1
78191f4fdc3291db871f06cf0cba459dc596e950
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SHA256
03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e
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SHA512
f0edef433e801e8a4151268740d601c310f23cba5d511c9209e72d464034de02df77b56c88200ca4fc1749a1b0d8fbbf0df22452e9544854602edf4eb3e813b2
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SSDEEP
49152:OePpQEhJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEhtIuoITsdZ
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 8 IoCs
Processes:
resource yara_rule behavioral2/memory/2172-3-0x0000000004190000-0x00000000042D9000-memory.dmp family_vidar_v7 behavioral2/memory/3992-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3992-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3992-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3992-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3992-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3992-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3992-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5294.tmppid process 3992 kat5294.tmp -
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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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:
03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exedescription pid process target process PID 2172 set thread context of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat5294.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5294.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat5294.tmppid process 3992 kat5294.tmp 3992 kat5294.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exedescription pid process target process PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp PID 2172 wrote to memory of 3992 2172 03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe kat5294.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe"C:\Users\Admin\AppData\Local\Temp\03238ed51213da849f3f33165d7de02ba15482215fd0d48c68ae6871947b225e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat5294.tmpC:\Users\Admin\AppData\Local\Temp\kat5294.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5294.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2172-0-0x0000000002490000-0x0000000002491000-memory.dmpFilesize
4KB
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memory/2172-3-0x0000000004190000-0x00000000042D9000-memory.dmpFilesize
1.3MB
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memory/2172-8-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB
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memory/3992-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3992-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3992-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3992-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3992-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3992-20-0x0000000019400000-0x000000001965F000-memory.dmpFilesize
2.4MB
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memory/3992-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3992-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB