Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 21:31
Static task
static1
Behavioral task
behavioral1
Sample
95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe
Resource
win10v2004-20240508-en
General
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Target
95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe
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Size
2.0MB
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MD5
01cb66e008ba99f01c22c0c1f912df23
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SHA1
a3ef6da36e31a90619e5e7542e95e64ada780462
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SHA256
95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4
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SHA512
1f810334d461f6283df74305df03e8405b60110ee3cb799d7dd376b578edce4314d80ce056170781973984a91c46c13685059fe0d433bed952204370451a7cb9
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SSDEEP
49152:7QzHt472DFJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt3tIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 13 IoCs
Processes:
resource yara_rule behavioral1/memory/1204-2-0x0000000004120000-0x0000000004269000-memory.dmp family_vidar_v7 behavioral1/memory/4312-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-49-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-50-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-61-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4312-63-0x0000000000400000-0x0000000000646000-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:
kat4F87.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation kat4F87.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat4F87.tmppid process 4312 kat4F87.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:
95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exedescription pid process target process PID 1204 set thread context of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.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:
kat4F87.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4F87.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4960 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4F87.tmppid process 4312 kat4F87.tmp 4312 kat4F87.tmp 4312 kat4F87.tmp 4312 kat4F87.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exekat4F87.tmpcmd.exedescription pid process target process PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 1204 wrote to memory of 4312 1204 95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe kat4F87.tmp PID 4312 wrote to memory of 3232 4312 kat4F87.tmp cmd.exe PID 4312 wrote to memory of 3232 4312 kat4F87.tmp cmd.exe PID 4312 wrote to memory of 3232 4312 kat4F87.tmp cmd.exe PID 3232 wrote to memory of 4960 3232 cmd.exe timeout.exe PID 3232 wrote to memory of 4960 3232 cmd.exe timeout.exe PID 3232 wrote to memory of 4960 3232 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe"C:\Users\Admin\AppData\Local\Temp\95b9ac532ae414d29f194b91c53a46bed67ec07fc5a5d2532294d8dca81e2cd4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4F87.tmpC:\Users\Admin\AppData\Local\Temp\kat4F87.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\kat4F87.tmp" & rd /s /q "C:\ProgramData\KJJKEBGHJKFI" & 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\kat4F87.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1204-9-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB
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memory/1204-2-0x0000000004120000-0x0000000004269000-memory.dmpFilesize
1.3MB
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memory/1204-0-0x0000000002380000-0x0000000002381000-memory.dmpFilesize
4KB
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memory/4312-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-18-0x000000001B750000-0x000000001B9AF000-memory.dmpFilesize
2.4MB
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memory/4312-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-49-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-50-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-61-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4312-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB