Analysis
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max time kernel
146s -
max time network
157s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
23-05-2024 03:24
Static task
static1
Behavioral task
behavioral1
Sample
7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe
Resource
win10v2004-20240426-en
General
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Target
7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe
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Size
2.0MB
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MD5
0e9f62b33969cd1d4708e11376f017c2
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SHA1
4766b61b941c9ae58c0929664778b5d46cd87e9a
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SHA256
7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722
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SHA512
bf9c4cad3299cdfcf55a0f1bdee15e07edfcae700d4de6211e9b45f1df7013d51590eda070b3f5c72121b366c50c6e41f32bb8c1f6ca34fc3e98a5d7277564f1
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SSDEEP
49152:7QzHt472DNJtTF+TxMoxc1TU+j+dAzGwlrh:7QzHtLtIuoITsdZ
Malware Config
Extracted
stealc
Signatures
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Detect Vidar Stealer 8 IoCs
Processes:
resource yara_rule behavioral2/memory/3468-1-0x00000000041D0000-0x0000000004319000-memory.dmp family_vidar_v7 behavioral2/memory/4256-7-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4256-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4256-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4256-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4256-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4256-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4256-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat6C85.tmppid process 4256 kat6C85.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:
7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exedescription pid process target process PID 3468 set thread context of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat6C85.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6C85.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat6C85.tmppid process 4256 kat6C85.tmp 4256 kat6C85.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exedescription pid process target process PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp PID 3468 wrote to memory of 4256 3468 7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe kat6C85.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe"C:\Users\Admin\AppData\Local\Temp\7939855bf8d006f2c8869cc97c4fb464860564dbf4ca79a32cd3afd160961722.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3468 -
C:\Users\Admin\AppData\Local\Temp\kat6C85.tmpC:\Users\Admin\AppData\Local\Temp\kat6C85.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4256
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\kat6C85.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3468-0-0x00000000025A0000-0x00000000025A1000-memory.dmpFilesize
4KB
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memory/3468-1-0x00000000041D0000-0x0000000004319000-memory.dmpFilesize
1.3MB
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memory/3468-10-0x0000000000400000-0x0000000000601000-memory.dmpFilesize
2.0MB
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memory/4256-7-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4256-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4256-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4256-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4256-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4256-22-0x00000000284A0000-0x00000000286FF000-memory.dmpFilesize
2.4MB
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memory/4256-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4256-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB