Analysis
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max time kernel
90s -
max time network
127s -
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 08:26
Static task
static1
Behavioral task
behavioral1
Sample
ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe
Resource
win10v2004-20240508-en
General
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Target
ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe
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Size
2.0MB
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MD5
ac1cc39dc3df2ab7197ec22259a09e17
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SHA1
6716724fad0181e499477b7ef431ede9223fdc89
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SHA256
ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08
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SHA512
ab0af5cb8f712db3b7d5a281a05b60ee952f2572261b0ad74e659fe09cec480430ece369d7e3970c864db91728bc760f9f4f2af220bc6009fb87ed801ac9a771
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SSDEEP
49152:s4K3x1vUOJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18OtIuoITsdZ
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/1456-2-0x0000000004110000-0x0000000004259000-memory.dmp family_vidar_v7 behavioral2/memory/4020-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4020-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4020-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4020-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4020-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4020-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/4020-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat445C.tmppid process 4020 kat445C.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:
ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exedescription pid process target process PID 1456 set thread context of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat445C.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat445C.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat445C.tmppid process 4020 kat445C.tmp 4020 kat445C.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exedescription pid process target process PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp PID 1456 wrote to memory of 4020 1456 ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe kat445C.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe"C:\Users\Admin\AppData\Local\Temp\ea815bf1c58680496fc79b83266136db2f37dd1ffc024e591bc7750e08dbec08.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat445C.tmpC:\Users\Admin\AppData\Local\Temp\kat445C.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\kat445C.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1456-0-0x0000000002360000-0x0000000002361000-memory.dmpFilesize
4KB
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memory/1456-2-0x0000000004110000-0x0000000004259000-memory.dmpFilesize
1.3MB
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memory/1456-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/4020-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4020-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4020-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4020-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4020-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4020-22-0x0000000028510000-0x000000002876F000-memory.dmpFilesize
2.4MB
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memory/4020-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4020-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB