Analysis
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max time kernel
105s -
max time network
127s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-05-2024 00:31
Static task
static1
Behavioral task
behavioral1
Sample
7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe
Resource
win10v2004-20240508-en
General
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Target
7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe
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Size
2.0MB
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MD5
5538f3e6872e05cae7d3088f3c6a490e
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SHA1
a4416c1f0417d38c6c330be21d1eb9deadc74d53
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SHA256
7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701
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SHA512
e53ad2c60ee979bf4efcd7767425c146643fc3299633c04c00e69711931377f95a0f076c8dd569f6cf82fc90c964fde563ce2e0922a5ae93ec87e4bdae37b106
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SSDEEP
49152:s4K3x1vU+JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18+tIuoITsdZ
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/4360-1-0x0000000004030000-0x0000000004179000-memory.dmp family_vidar_v7 behavioral2/memory/3392-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-50-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3392-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat61F6.tmppid process 3392 kat61F6.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:
7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exedescription pid process target process PID 4360 set thread context of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.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:
kat61F6.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat61F6.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3352 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat61F6.tmppid process 3392 kat61F6.tmp 3392 kat61F6.tmp 3392 kat61F6.tmp 3392 kat61F6.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exekat61F6.tmpcmd.exedescription pid process target process PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 4360 wrote to memory of 3392 4360 7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe kat61F6.tmp PID 3392 wrote to memory of 4516 3392 kat61F6.tmp cmd.exe PID 3392 wrote to memory of 4516 3392 kat61F6.tmp cmd.exe PID 3392 wrote to memory of 4516 3392 kat61F6.tmp cmd.exe PID 4516 wrote to memory of 3352 4516 cmd.exe timeout.exe PID 4516 wrote to memory of 3352 4516 cmd.exe timeout.exe PID 4516 wrote to memory of 3352 4516 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe"C:\Users\Admin\AppData\Local\Temp\7c00e05675e4315cd8fdb150490a5c91f16867c00febea4cb57559d63c143701.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat61F6.tmpC:\Users\Admin\AppData\Local\Temp\kat61F6.tmp2⤵
- 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\kat61F6.tmp" & rd /s /q "C:\ProgramData\BKKJDBFBKKJE" & 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\kat61F6.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3392-50-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-18-0x00000000193F0000-0x000000001964F000-memory.dmpFilesize
2.4MB
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memory/3392-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3392-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4360-0-0x00000000008D0000-0x00000000008D1000-memory.dmpFilesize
4KB
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memory/4360-1-0x0000000004030000-0x0000000004179000-memory.dmpFilesize
1.3MB
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memory/4360-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB