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
28-05-2024 09:49
Static task
static1
Behavioral task
behavioral1
Sample
98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe
Resource
win10v2004-20240426-en
General
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Target
98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe
-
Size
1.9MB
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MD5
6c134e9c0baf304141c1fceb6ad7c78c
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SHA1
63b6f0c3453e6f3a3b1891353aa56bd06027cae9
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SHA256
98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149
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SHA512
02eeaf92bc57f1c9703985348ece73b39d8cad59df955205106b9722cf20f38b70776c2db2a27928fb38f7a0951e593c1a89b1383a8f01d2c7c22f71e4110428
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SSDEEP
49152:CdKfTn6vWJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnltIuoITsdZ
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/1860-2-0x0000000004020000-0x0000000004169000-memory.dmp family_vidar_v7 behavioral2/memory/4484-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4484-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4484-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4484-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4484-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4484-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4484-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat66D8.tmppid process 4484 kat66D8.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:
98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exedescription pid process target process PID 1860 set thread context of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat66D8.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat66D8.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat66D8.tmppid process 4484 kat66D8.tmp 4484 kat66D8.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exedescription pid process target process PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp PID 1860 wrote to memory of 4484 1860 98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe kat66D8.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe"C:\Users\Admin\AppData\Local\Temp\98699b259aef9225cb4e5fb93375089b211d05ba9a77a27422763e5ca6726149.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1860 -
C:\Users\Admin\AppData\Local\Temp\kat66D8.tmpC:\Users\Admin\AppData\Local\Temp\kat66D8.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4484
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat66D8.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1860-0-0x0000000002430000-0x0000000002431000-memory.dmpFilesize
4KB
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memory/1860-2-0x0000000004020000-0x0000000004169000-memory.dmpFilesize
1.3MB
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memory/1860-9-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/4484-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4484-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4484-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4484-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4484-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4484-22-0x000000001B840000-0x000000001BA9F000-memory.dmpFilesize
2.4MB
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memory/4484-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4484-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB