Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 04:57
Static task
static1
Behavioral task
behavioral1
Sample
8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe
Resource
win7-20240221-en
General
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Target
8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe
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Size
2.0MB
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MD5
40e7ff44884592b0085a242b51824806
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SHA1
1e453cd0506933dde3bfaf9f821cb8f404118c56
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SHA256
8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa
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SHA512
a05995d62d0d8cb596bebb1937203db1d5be01329f9df6fc3accfd46ac37dc9390d8824b383d995cb5cd6c446d4783e105f25cca183a2dd6396fcdf7551de3be
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SSDEEP
49152:s4K3x1vUyJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18ytIuoITsdZ
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/2188-2-0x0000000004090000-0x00000000041D9000-memory.dmp family_vidar_v7 behavioral2/memory/2284-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2284-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2284-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2284-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2284-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2284-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2284-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4258.tmppid process 2284 kat4258.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:
8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exedescription pid process target process PID 2188 set thread context of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4258.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4258.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4258.tmppid process 2284 kat4258.tmp 2284 kat4258.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exedescription pid process target process PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp PID 2188 wrote to memory of 2284 2188 8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe kat4258.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe"C:\Users\Admin\AppData\Local\Temp\8d3d0b068c53a267be316e9c3df958579552ec2e2fccafcba7e8d74f570e2baa.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4258.tmpC:\Users\Admin\AppData\Local\Temp\kat4258.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\kat4258.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2188-0-0x0000000002270000-0x0000000002271000-memory.dmpFilesize
4KB
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memory/2188-2-0x0000000004090000-0x00000000041D9000-memory.dmpFilesize
1.3MB
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memory/2188-7-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/2284-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2284-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2284-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2284-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2284-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2284-18-0x000000001B790000-0x000000001B9EF000-memory.dmpFilesize
2.4MB
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memory/2284-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2284-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB