Analysis
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max time kernel
92s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
23-05-2024 00:40
Static task
static1
Behavioral task
behavioral1
Sample
019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe
Resource
win10v2004-20240508-en
General
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Target
019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe
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Size
2.0MB
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MD5
cce0d1b4fb8fd929c7cfe702259384b1
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SHA1
a1a68e6984ddd162e4674703eb62070ae45de8fc
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SHA256
019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2
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SHA512
3e77a34ce3f156992c22daf63167f9849e4fa09b8db412cbc91930ebc031f81412526495d36968b355c7a66d437fc4287d12a6140f762aae2deac97c8ca5b050
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SSDEEP
49152:7QzHt472DUJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt2tIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 13 IoCs
Processes:
resource yara_rule behavioral2/memory/3508-2-0x00000000040C0000-0x0000000004209000-memory.dmp family_vidar_v7 behavioral2/memory/2056-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2056-70-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4B32.tmppid process 2056 kat4B32.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:
019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exedescription pid process target process PID 3508 set thread context of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.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:
kat4B32.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4B32.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 1596 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4B32.tmppid process 2056 kat4B32.tmp 2056 kat4B32.tmp 2056 kat4B32.tmp 2056 kat4B32.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exekat4B32.tmpcmd.exedescription pid process target process PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 3508 wrote to memory of 2056 3508 019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe kat4B32.tmp PID 2056 wrote to memory of 2336 2056 kat4B32.tmp cmd.exe PID 2056 wrote to memory of 2336 2056 kat4B32.tmp cmd.exe PID 2056 wrote to memory of 2336 2056 kat4B32.tmp cmd.exe PID 2336 wrote to memory of 1596 2336 cmd.exe timeout.exe PID 2336 wrote to memory of 1596 2336 cmd.exe timeout.exe PID 2336 wrote to memory of 1596 2336 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe"C:\Users\Admin\AppData\Local\Temp\019f4a42d97d7e08b821d968343fb0f73b066b36983b28cca821f5b7e9e485b2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3508 -
C:\Users\Admin\AppData\Local\Temp\kat4B32.tmpC:\Users\Admin\AppData\Local\Temp\kat4B32.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2056 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4B32.tmp" & rd /s /q "C:\ProgramData\KKKJKEBKFCAA" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:1596
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4B32.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2056-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-70-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-22-0x00000000260D0000-0x000000002632F000-memory.dmpFilesize
2.4MB
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memory/2056-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2056-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3508-0-0x00000000007F0000-0x00000000007F1000-memory.dmpFilesize
4KB
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memory/3508-9-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB
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memory/3508-2-0x00000000040C0000-0x0000000004209000-memory.dmpFilesize
1.3MB