Analysis
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max time kernel
94s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
27-05-2024 19:53
Static task
static1
Behavioral task
behavioral1
Sample
a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe
Resource
win10v2004-20240426-en
General
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Target
a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe
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Size
1.9MB
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MD5
ba63159c30fb6d0b05fb1e67df9abf5e
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SHA1
31788ec82ca1ad7a18253108491dbd88ef829780
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SHA256
a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6
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SHA512
68e4a190580fd38b8eb30391cf1fe2313ced9fa0dcf5bb655d13e23499e1c7b15907259c14ded04e6fb32e28e6e15c38eec51402a16e912d3496b94cda311265
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SSDEEP
49152:CdKfTn6vWJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnVtIuoITsdZ
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/1896-2-0x0000000004010000-0x0000000004159000-memory.dmp family_vidar_v7 behavioral1/memory/4736-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4736-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4736-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4736-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4736-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4736-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4736-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat37AA.tmppid process 4736 kat37AA.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:
a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exedescription pid process target process PID 1896 set thread context of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat37AA.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat37AA.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat37AA.tmppid process 4736 kat37AA.tmp 4736 kat37AA.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exedescription pid process target process PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp PID 1896 wrote to memory of 4736 1896 a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe kat37AA.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe"C:\Users\Admin\AppData\Local\Temp\a87da16100f9c09e57b30bc96fc093582eb192b3d4d0643470048be17fd0aff6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1896 -
C:\Users\Admin\AppData\Local\Temp\kat37AA.tmpC:\Users\Admin\AppData\Local\Temp\kat37AA.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4736
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat37AA.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1896-0-0x0000000002350000-0x0000000002351000-memory.dmpFilesize
4KB
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memory/1896-2-0x0000000004010000-0x0000000004159000-memory.dmpFilesize
1.3MB
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memory/1896-9-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/4736-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4736-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4736-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4736-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4736-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4736-20-0x000000001DC00000-0x000000001DE5F000-memory.dmpFilesize
2.4MB
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memory/4736-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4736-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB