Analysis
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max time kernel
140s -
max time network
120s -
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 20:42
Static task
static1
Behavioral task
behavioral1
Sample
688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe
Resource
win10v2004-20240508-en
General
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Target
688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe
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Size
2.0MB
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MD5
d360ab70d33011e92130c42526f09a87
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SHA1
3336a3fb67eaecc85734cfed1ad18fae79f6409d
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SHA256
688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a
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SHA512
9632ccacc5c85983fe57f72c766fcc39decf99601c6e8c51b05c78ba76bd5a8f57a6e9a3bab8272138edef7b0f094317c398b79cb20cac1be377bc54863b2c77
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SSDEEP
49152:7QzHt472DAJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHt6tIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral1/memory/2864-2-0x00000000040C0000-0x0000000004209000-memory.dmp family_vidar_v7 behavioral1/memory/1788-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1788-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1788-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1788-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1788-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1788-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1788-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat665B.tmppid process 1788 kat665B.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:
688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exedescription pid process target process PID 2864 set thread context of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat665B.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat665B.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat665B.tmppid process 1788 kat665B.tmp 1788 kat665B.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exedescription pid process target process PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp PID 2864 wrote to memory of 1788 2864 688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe kat665B.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe"C:\Users\Admin\AppData\Local\Temp\688be43c5df4f384feb809364feaf42a64988128bf8e873c3f7a3e31ab23d85a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2864 -
C:\Users\Admin\AppData\Local\Temp\kat665B.tmpC:\Users\Admin\AppData\Local\Temp\kat665B.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1788
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat665B.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1788-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1788-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1788-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1788-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1788-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1788-17-0x000000001B730000-0x000000001B98F000-memory.dmpFilesize
2.4MB
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memory/1788-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1788-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2864-0-0x00000000008C0000-0x00000000008C1000-memory.dmpFilesize
4KB
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memory/2864-2-0x00000000040C0000-0x0000000004209000-memory.dmpFilesize
1.3MB
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memory/2864-10-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB