Analysis
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max time kernel
133s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 06:10
Static task
static1
Behavioral task
behavioral1
Sample
34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe
Resource
win10v2004-20240508-en
General
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Target
34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe
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Size
2.0MB
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MD5
db4ba28c140322cefbe18de140a2543a
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SHA1
6f08c2a18e9694240d7998aaef1043064688e99c
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SHA256
34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195
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SHA512
a579c96428e8036a3d2fdba4717232e3280bde7526216766c4b04384403759a0ae69e2d1764412ed17e2daaa73781b195ddc55134b1c2bff2147336d9cea75a2
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SSDEEP
49152:s4K3x1vUmJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18mtIuoITsdZ
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 8 IoCs
Processes:
resource yara_rule behavioral1/memory/2892-2-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral1/memory/4228-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4228-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4228-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4228-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4228-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4228-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4228-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4575.tmppid process 4228 kat4575.tmp -
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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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:
34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exedescription pid process target process PID 2892 set thread context of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4575.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4575.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4575.tmppid process 4228 kat4575.tmp 4228 kat4575.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exedescription pid process target process PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp PID 2892 wrote to memory of 4228 2892 34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe kat4575.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe"C:\Users\Admin\AppData\Local\Temp\34339222b5f16d1fb677917df3cc3e7e792aaee789adade5f6d37c43409d3195.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4575.tmpC:\Users\Admin\AppData\Local\Temp\kat4575.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4575.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2892-0-0x0000000002250000-0x0000000002251000-memory.dmpFilesize
4KB
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memory/2892-2-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB
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memory/2892-9-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/4228-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4228-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4228-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4228-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4228-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4228-17-0x000000001B790000-0x000000001B9EF000-memory.dmpFilesize
2.4MB
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memory/4228-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4228-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB