Analysis
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max time kernel
147s -
max time network
155s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 05:26
Static task
static1
Behavioral task
behavioral1
Sample
4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe
Resource
win10v2004-20240426-en
General
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Target
4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe
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Size
2.0MB
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MD5
441f2308a3fbf4a10357141a50231cc9
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SHA1
0c38c3282a5bfcd9feee7c9a316af42307577515
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SHA256
4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2
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SHA512
4957ae673cc468d08158cd57f0f7e83770b42cc8837da375fdf65440bcb2b34c9d486777a61f092168738710ba8a77bf0b0b8207e2a6cd6974c9300b08711fd0
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SSDEEP
49152:s4K3x1vUCJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18CtIuoITsdZ
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 behavioral2/memory/4088-2-0x0000000004020000-0x0000000004169000-memory.dmp family_vidar_v7 behavioral2/memory/3152-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3152-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3152-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3152-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3152-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3152-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/3152-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4F78.tmppid process 3152 kat4F78.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:
4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exedescription pid process target process PID 4088 set thread context of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4F78.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4F78.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4F78.tmppid process 3152 kat4F78.tmp 3152 kat4F78.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exedescription pid process target process PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp PID 4088 wrote to memory of 3152 4088 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4F78.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe"C:\Users\Admin\AppData\Local\Temp\4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4F78.tmpC:\Users\Admin\AppData\Local\Temp\kat4F78.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\kat4F78.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/3152-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3152-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3152-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3152-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3152-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3152-19-0x00000000193B0000-0x000000001960F000-memory.dmpFilesize
2.4MB
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memory/3152-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3152-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4088-0-0x0000000002580000-0x0000000002581000-memory.dmpFilesize
4KB
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memory/4088-2-0x0000000004020000-0x0000000004169000-memory.dmpFilesize
1.3MB
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memory/4088-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB