Analysis
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max time kernel
88s -
max time network
100s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 04:23
Static task
static1
Behavioral task
behavioral1
Sample
99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe
Resource
win10v2004-20240508-en
General
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Target
99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe
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Size
2.0MB
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MD5
921e969ede3c18ad54dfa3f5796940ca
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SHA1
2c4a4900d0b276a26fb0b0178e3741391827c92e
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SHA256
99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb
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SHA512
484e8e5572636cd3d9591b87e49dbb68a55c8e9ba3628ec181050942a68b6d373e84462d85c7d614ff033f36a64b5ba1596908a9f09704594c2132e2495053a8
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SSDEEP
49152:s4K3x1vUSJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18StIuoITsdZ
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 10 IoCs
Processes:
resource yara_rule behavioral2/memory/3280-4-0x0000000004160000-0x00000000042A9000-memory.dmp family_vidar_v7 behavioral2/memory/1624-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-3-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-16-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-51-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1624-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat71E4.tmppid process 1624 kat71E4.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:
99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exedescription pid process target process PID 3280 set thread context of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat71E4.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat71E4.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat71E4.tmppid process 1624 kat71E4.tmp 1624 kat71E4.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exedescription pid process target process PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp PID 3280 wrote to memory of 1624 3280 99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe kat71E4.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe"C:\Users\Admin\AppData\Local\Temp\99126e270b4b423fa6456f93625910e0aae45ee5cffc9de0c5b75c77587da9eb.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat71E4.tmpC:\Users\Admin\AppData\Local\Temp\kat71E4.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\kat71E4.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1624-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-3-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-16-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-20-0x0000000019400000-0x000000001965F000-memory.dmpFilesize
2.4MB
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memory/1624-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-51-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1624-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3280-4-0x0000000004160000-0x00000000042A9000-memory.dmpFilesize
1.3MB
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memory/3280-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/3280-0-0x00000000024C0000-0x00000000024C1000-memory.dmpFilesize
4KB