Analysis
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max time kernel
149s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
24-05-2024 21:17
Static task
static1
Behavioral task
behavioral1
Sample
9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe
Resource
win10v2004-20240426-en
General
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Target
9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe
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Size
2.0MB
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MD5
7a2a8ceddd97c990fdb6dd5fd80ccc6d
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SHA1
37082b1184aba2b5bc0ca642af9f97f3fd541a82
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SHA256
9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb
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SHA512
f5a06fd4edbb20cd2a94858db75963b1a16a93bd71e6bf27baf475686b81d0a30ad55dcb427715a284535cf31c8ee4efd0a3de2a1803173c9d566bb4dd827321
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SSDEEP
49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ
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/3844-2-0x0000000004020000-0x0000000004169000-memory.dmp family_vidar_v7 behavioral1/memory/2116-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-49-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-50-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-61-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2116-64-0x0000000000400000-0x0000000000646000-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:
kat3FA9.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation kat3FA9.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat3FA9.tmppid process 2116 kat3FA9.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:
9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exedescription pid process target process PID 3844 set thread context of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.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:
kat3FA9.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3FA9.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2456 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat3FA9.tmppid process 2116 kat3FA9.tmp 2116 kat3FA9.tmp 2116 kat3FA9.tmp 2116 kat3FA9.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exekat3FA9.tmpcmd.exedescription pid process target process PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 3844 wrote to memory of 2116 3844 9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe kat3FA9.tmp PID 2116 wrote to memory of 3524 2116 kat3FA9.tmp cmd.exe PID 2116 wrote to memory of 3524 2116 kat3FA9.tmp cmd.exe PID 2116 wrote to memory of 3524 2116 kat3FA9.tmp cmd.exe PID 3524 wrote to memory of 2456 3524 cmd.exe timeout.exe PID 3524 wrote to memory of 2456 3524 cmd.exe timeout.exe PID 3524 wrote to memory of 2456 3524 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe"C:\Users\Admin\AppData\Local\Temp\9aa5106147af7b6caee9767d3817ea7992d37d646c6c02435d1e79fea87d23cb.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat3FA9.tmpC:\Users\Admin\AppData\Local\Temp\kat3FA9.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat3FA9.tmp" & rd /s /q "C:\ProgramData\BAFCGIJDAFBK" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat3FA9.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2116-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-61-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-17-0x000000001B7C0000-0x000000001BA1F000-memory.dmpFilesize
2.4MB
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memory/2116-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-49-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-50-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2116-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3844-2-0x0000000004020000-0x0000000004169000-memory.dmpFilesize
1.3MB
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memory/3844-0-0x00000000007C0000-0x00000000007C1000-memory.dmpFilesize
4KB
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memory/3844-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB