Analysis
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max time kernel
136s -
max time network
105s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 11:22
Static task
static1
Behavioral task
behavioral1
Sample
3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe
Resource
win10v2004-20240426-en
General
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Target
3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe
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Size
2.4MB
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MD5
168e5678ee6435390c3cbe2c60535464
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SHA1
9f652f16cee90406e1adcceb9afe1c19a7267f9b
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SHA256
3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d
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SHA512
291f54d1262e910578db90670a512bb5018525271949ba5d28ec80506d9bf803fb36682e46df0abd9c7f03dbf64d52be548f776e1316fa5323b1f39d2d4ebc00
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SSDEEP
49152:jxIRJF1HL+VdX68kUiJtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68ditIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral1/memory/3328-1-0x0000000004110000-0x0000000004259000-memory.dmp family_vidar_v7 behavioral1/memory/4664-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4664-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4664-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4664-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4664-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4664-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4664-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat40A3.tmppid process 4664 kat40A3.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:
3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exedescription pid process target process PID 3328 set thread context of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat40A3.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat40A3.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat40A3.tmppid process 4664 kat40A3.tmp 4664 kat40A3.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exedescription pid process target process PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp PID 3328 wrote to memory of 4664 3328 3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe kat40A3.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe"C:\Users\Admin\AppData\Local\Temp\3de8b9b1d08028b686b6d6f60d71fa66b2ad895e8a1e05613ba22a57c337330d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat40A3.tmpC:\Users\Admin\AppData\Local\Temp\kat40A3.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\kat40A3.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3328-0-0x0000000000830000-0x0000000000831000-memory.dmpFilesize
4KB
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memory/3328-1-0x0000000004110000-0x0000000004259000-memory.dmpFilesize
1.3MB
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memory/3328-10-0x0000000000400000-0x0000000000678000-memory.dmpFilesize
2.5MB
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memory/4664-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4664-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4664-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4664-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4664-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4664-17-0x000000001B790000-0x000000001B9EF000-memory.dmpFilesize
2.4MB
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memory/4664-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4664-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB