Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-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 behavioral1/memory/1864-2-0x00000000040B0000-0x00000000041F9000-memory.dmp family_vidar_v7 behavioral1/memory/2540-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2540-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2540-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2540-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2540-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2540-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2540-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4268.tmppid process 2540 kat4268.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 1864 set thread context of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4268.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4268.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4268.tmppid process 2540 kat4268.tmp 2540 kat4268.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exedescription pid process target process PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.tmp PID 1864 wrote to memory of 2540 1864 4e57ba211728826bb1ebebb5735cc825b06bbf6689984a13b6a88b5e8e0178e2.exe kat4268.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\kat4268.tmpC:\Users\Admin\AppData\Local\Temp\kat4268.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\kat4268.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1864-0-0x00000000007C0000-0x00000000007C1000-memory.dmpFilesize
4KB
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memory/1864-2-0x00000000040B0000-0x00000000041F9000-memory.dmpFilesize
1.3MB
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memory/1864-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/2540-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2540-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2540-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2540-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2540-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2540-20-0x000000001B7C0000-0x000000001BA1F000-memory.dmpFilesize
2.4MB
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memory/2540-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2540-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB