Analysis
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max time kernel
146s -
max time network
152s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-05-2024 14:15
Static task
static1
Behavioral task
behavioral1
Sample
31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe
Resource
win10v2004-20240426-en
General
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Target
31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe
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Size
2.4MB
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MD5
27af017546fa68fc90e9f93260bcf562
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SHA1
e0fa4ddf9f97f3c8ad0bdb41030afc32d697f888
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SHA256
31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78
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SHA512
01254b79613f4273c674bf62fc5d36e1c462314ccb846e2e0a56c74679189838996c5ab5534b80424391ab6cda5472c2594b2b0ae206df2015d633c563ed64b2
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SSDEEP
49152:jxIRJF1HL+VdX68kUGJtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68dGtIuoITsdZ
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/2968-2-0x0000000004130000-0x0000000004279000-memory.dmp family_vidar_v7 behavioral2/memory/816-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/816-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/816-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/816-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/816-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/816-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/816-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat77DF.tmppid process 816 kat77DF.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:
31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exedescription pid process target process PID 2968 set thread context of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat77DF.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat77DF.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat77DF.tmppid process 816 kat77DF.tmp 816 kat77DF.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exedescription pid process target process PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp PID 2968 wrote to memory of 816 2968 31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe kat77DF.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe"C:\Users\Admin\AppData\Local\Temp\31780dfdd0ede6aacbc2370d0be7548ab0264a51b9f569712f27ffc3fcd90a78.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat77DF.tmpC:\Users\Admin\AppData\Local\Temp\kat77DF.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\kat77DF.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/816-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/816-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/816-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/816-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/816-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/816-17-0x0000000019380000-0x00000000195DF000-memory.dmpFilesize
2.4MB
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memory/816-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/816-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2968-0-0x00000000023D0000-0x00000000023D1000-memory.dmpFilesize
4KB
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memory/2968-2-0x0000000004130000-0x0000000004279000-memory.dmpFilesize
1.3MB
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memory/2968-9-0x0000000000400000-0x0000000000678000-memory.dmpFilesize
2.5MB