Analysis
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max time kernel
91s -
max time network
95s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
28-05-2024 08:39
Static task
static1
Behavioral task
behavioral1
Sample
da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe
Resource
win10v2004-20240508-en
General
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Target
da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe
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Size
1.9MB
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MD5
07525b01a06945cad34cbd74183c1cc2
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SHA1
dd854470f34a243e6414a8f134216a5264fc39ed
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SHA256
da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45
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SHA512
e8c28654529bcd3da847e7f0525dbd5c3a57dc5aab33f6b36e335cb518dd65ee5501003a24c0f72943db724e3c2409ad75936fcf264c694268011a2c490dbd31
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SSDEEP
49152:CdKfTn6vuJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnNtIuoITsdZ
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/2128-2-0x00000000040D0000-0x0000000004219000-memory.dmp family_vidar_v7 behavioral2/memory/3004-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3004-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3004-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3004-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3004-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3004-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3004-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat5A16.tmppid process 3004 kat5A16.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:
da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exedescription pid process target process PID 2128 set thread context of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat5A16.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5A16.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat5A16.tmppid process 3004 kat5A16.tmp 3004 kat5A16.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exedescription pid process target process PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp PID 2128 wrote to memory of 3004 2128 da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe kat5A16.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe"C:\Users\Admin\AppData\Local\Temp\da9c4165bd822ceedacc0fb7793237d568d193f79000d403b15fe2f123135f45.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2128 -
C:\Users\Admin\AppData\Local\Temp\kat5A16.tmpC:\Users\Admin\AppData\Local\Temp\kat5A16.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3004
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5A16.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2128-0-0x0000000002340000-0x0000000002341000-memory.dmpFilesize
4KB
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memory/2128-2-0x00000000040D0000-0x0000000004219000-memory.dmpFilesize
1.3MB
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memory/2128-9-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/3004-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3004-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3004-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3004-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3004-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3004-19-0x0000000019410000-0x000000001966F000-memory.dmpFilesize
2.4MB
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memory/3004-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3004-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB