Analysis
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max time kernel
91s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 01:00
Static task
static1
Behavioral task
behavioral1
Sample
a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe
Resource
win10v2004-20240508-en
General
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Target
a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe
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Size
2.0MB
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MD5
f38c39a09fce3833e00146c0d5cbfad4
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SHA1
1970e746227ab1584bbb8db95242ed68d182d84f
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SHA256
a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e
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SHA512
71e1b2cf5a7c390311d510177f592b10f6c0b85a09c9ea647f5d0772686dd752b1085a9e2b0cb270fba0209c0d73308054512f847fdfc79f763b845f08564e34
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SSDEEP
49152:OePpQEtJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEttIuoITsdZ
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 behavioral2/memory/3856-1-0x0000000004030000-0x0000000004179000-memory.dmp family_vidar_v7 behavioral2/memory/2700-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2700-69-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4EAC.tmppid process 2700 kat4EAC.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:
a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exedescription pid process target process PID 3856 set thread context of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.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:
kat4EAC.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4EAC.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 404 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4EAC.tmppid process 2700 kat4EAC.tmp 2700 kat4EAC.tmp 2700 kat4EAC.tmp 2700 kat4EAC.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exekat4EAC.tmpcmd.exedescription pid process target process PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 3856 wrote to memory of 2700 3856 a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe kat4EAC.tmp PID 2700 wrote to memory of 4308 2700 kat4EAC.tmp cmd.exe PID 2700 wrote to memory of 4308 2700 kat4EAC.tmp cmd.exe PID 2700 wrote to memory of 4308 2700 kat4EAC.tmp cmd.exe PID 4308 wrote to memory of 404 4308 cmd.exe timeout.exe PID 4308 wrote to memory of 404 4308 cmd.exe timeout.exe PID 4308 wrote to memory of 404 4308 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe"C:\Users\Admin\AppData\Local\Temp\a52b932372f6b9f2990d0e61466d72177fa730dea0cfa0911753d99a44df897e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3856 -
C:\Users\Admin\AppData\Local\Temp\kat4EAC.tmpC:\Users\Admin\AppData\Local\Temp\kat4EAC.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2700 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4EAC.tmp" & rd /s /q "C:\ProgramData\AKKEGHJDHDAF" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:4308 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:404
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4EAC.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2700-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-22-0x0000000026050000-0x00000000262AF000-memory.dmpFilesize
2.4MB
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memory/2700-69-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2700-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3856-0-0x0000000002350000-0x0000000002351000-memory.dmpFilesize
4KB
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memory/3856-1-0x0000000004030000-0x0000000004179000-memory.dmpFilesize
1.3MB
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memory/3856-10-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB