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
22-05-2024 22:27
Static task
static1
Behavioral task
behavioral1
Sample
98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe
Resource
win10v2004-20240426-en
General
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Target
98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe
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Size
2.0MB
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MD5
e0a64ce738c511638a9daaf1c9049475
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SHA1
30c3234419fcd5489ef6a6eb2310ed1441de9c44
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SHA256
98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b
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SHA512
4970812501ea327631f5930005c918bd464bc0d40d953db92065826287d2afaad82ff5196952f444939ef14508d7f371f1affd63bf7340c466ec0fbae7d36334
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SSDEEP
49152:7QzHt472DmJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtItIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 13 IoCs
Processes:
resource yara_rule behavioral1/memory/2812-1-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral1/memory/960-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/960-70-0x0000000000400000-0x0000000000646000-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:
kat443D.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation kat443D.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat443D.tmppid process 960 kat443D.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:
98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exedescription pid process target process PID 2812 set thread context of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.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:
kat443D.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat443D.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2616 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat443D.tmppid process 960 kat443D.tmp 960 kat443D.tmp 960 kat443D.tmp 960 kat443D.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exekat443D.tmpcmd.exedescription pid process target process PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 2812 wrote to memory of 960 2812 98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe kat443D.tmp PID 960 wrote to memory of 2940 960 kat443D.tmp cmd.exe PID 960 wrote to memory of 2940 960 kat443D.tmp cmd.exe PID 960 wrote to memory of 2940 960 kat443D.tmp cmd.exe PID 2940 wrote to memory of 2616 2940 cmd.exe timeout.exe PID 2940 wrote to memory of 2616 2940 cmd.exe timeout.exe PID 2940 wrote to memory of 2616 2940 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe"C:\Users\Admin\AppData\Local\Temp\98548553b0f07b01c917a3c94f3dc88ebcd856b7c7b6ef1cd1c51051f83efc6b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat443D.tmpC:\Users\Admin\AppData\Local\Temp\kat443D.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\kat443D.tmp" & rd /s /q "C:\ProgramData\HJEHIJEBKEBF" & 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\kat443D.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/960-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-70-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-22-0x00000000284B0000-0x000000002870F000-memory.dmpFilesize
2.4MB
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memory/960-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/960-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2812-0-0x0000000002360000-0x0000000002361000-memory.dmpFilesize
4KB
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memory/2812-8-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB
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memory/2812-1-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB