Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
28-05-2024 00:17
Static task
static1
Behavioral task
behavioral1
Sample
1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe
Resource
win10v2004-20240426-en
General
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Target
1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe
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Size
1.9MB
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MD5
6aee657bccb661bd78c462ab077c3026
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SHA1
656cc2a6ba33e9b449863b7e66a59240496efb83
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SHA256
1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600
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SHA512
daf32d8d3e18170dd595acf60e67fab74571b5659f796aa8b8c1266afcbc9df76233fd5189d40256808e7fd808322e09e30a428ab7201b10a3325622e1a410cc
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SSDEEP
49152:CdKfTn6vuJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn9tIuoITsdZ
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/3080-1-0x0000000004050000-0x0000000004199000-memory.dmp family_vidar_v7 behavioral1/memory/4776-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-49-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-56-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-61-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4776-64-0x0000000000400000-0x0000000000646000-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:
kat5505.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation kat5505.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat5505.tmppid process 4776 kat5505.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:
1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exedescription pid process target process PID 3080 set thread context of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.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:
kat5505.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat5505.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4368 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat5505.tmppid process 4776 kat5505.tmp 4776 kat5505.tmp 4776 kat5505.tmp 4776 kat5505.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exekat5505.tmpcmd.exedescription pid process target process PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 3080 wrote to memory of 4776 3080 1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe kat5505.tmp PID 4776 wrote to memory of 2752 4776 kat5505.tmp cmd.exe PID 4776 wrote to memory of 2752 4776 kat5505.tmp cmd.exe PID 4776 wrote to memory of 2752 4776 kat5505.tmp cmd.exe PID 2752 wrote to memory of 4368 2752 cmd.exe timeout.exe PID 2752 wrote to memory of 4368 2752 cmd.exe timeout.exe PID 2752 wrote to memory of 4368 2752 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe"C:\Users\Admin\AppData\Local\Temp\1a95d6973a21c919d71fa91ca8bf6a7a1091aaa57eb7c1adb4e6192da5d24600.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3080 -
C:\Users\Admin\AppData\Local\Temp\kat5505.tmpC:\Users\Admin\AppData\Local\Temp\kat5505.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4776 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat5505.tmp" & rd /s /q "C:\ProgramData\IDBFHCGCGDAA" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:4368
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat5505.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3080-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/3080-1-0x0000000004050000-0x0000000004199000-memory.dmpFilesize
1.3MB
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memory/3080-0-0x0000000002440000-0x0000000002441000-memory.dmpFilesize
4KB
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memory/4776-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-17-0x000000001DBA0000-0x000000001DDFF000-memory.dmpFilesize
2.4MB
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memory/4776-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-49-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-56-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-61-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4776-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB