Analysis
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max time kernel
146s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-05-2024 14:45
Static task
static1
Behavioral task
behavioral1
Sample
ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe
Resource
win10v2004-20240508-en
General
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Target
ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe
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Size
2.0MB
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MD5
e8533921d44b93ebe4177c0f929c684b
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SHA1
639a59827dc3726a9acf5203e2d0bd85ecbffc7c
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SHA256
ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579
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SHA512
28f74b613c2f42451b12161bb2b0bac5e8b164d7bf2b1ff1f6f08d4a1b87a6c1b55271f523964cd4a044e62322b9ea5784890939b35648b577a97776e93264e3
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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/2224-1-0x0000000004030000-0x0000000004179000-memory.dmp family_vidar_v7 behavioral2/memory/4356-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4356-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4356-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4356-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4356-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4356-34-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4356-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat6496.tmppid process 4356 kat6496.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:
ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exedescription pid process target process PID 2224 set thread context of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat6496.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat6496.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat6496.tmppid process 4356 kat6496.tmp 4356 kat6496.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exedescription pid process target process PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp PID 2224 wrote to memory of 4356 2224 ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe kat6496.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe"C:\Users\Admin\AppData\Local\Temp\ef22d55c84b223cc1eaffcdaa55bb7691a05650ac3662a766ffb7973fcb36579.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2224 -
C:\Users\Admin\AppData\Local\Temp\kat6496.tmpC:\Users\Admin\AppData\Local\Temp\kat6496.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4356
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat6496.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2224-0-0x0000000002340000-0x0000000002341000-memory.dmpFilesize
4KB
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memory/2224-1-0x0000000004030000-0x0000000004179000-memory.dmpFilesize
1.3MB
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memory/2224-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/4356-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4356-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4356-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4356-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4356-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4356-19-0x000000001B890000-0x000000001BAEF000-memory.dmpFilesize
2.4MB
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memory/4356-34-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4356-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB