Analysis
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max time kernel
133s -
max time network
103s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
26-05-2024 15:11
Static task
static1
Behavioral task
behavioral1
Sample
0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe
Resource
win7-20240221-en
General
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Target
0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe
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Size
355KB
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MD5
d79b788762c6435ae9f599743f9f482d
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SHA1
4d96933a654c426776b30b57b49227e812b3d231
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SHA256
0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574
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SHA512
e6e3a3be1c171b38a9b167291d2f875c169c04b0aefe7425092301cdb694c2c052fdc30e770634634c82ca3cca76507e20d0aff1ea6db9076299e10935bb39f9
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SSDEEP
6144:hKrTm/Wop3oiUklM540oF1zTuoZxFrI/l2k9Joup1JgHEa23sw6ac:8rTm/WohfdFNhhGpIOcYc
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 11 IoCs
Processes:
resource yara_rule behavioral2/memory/1792-2-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-7-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-5-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-11-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-12-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-29-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-30-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-46-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-47-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-61-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/1792-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation RegAsm.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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:
0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exedescription pid process target process PID 4564 set thread context of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
RegAsm.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString RegAsm.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2556 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
RegAsm.exepid process 1792 RegAsm.exe 1792 RegAsm.exe 1792 RegAsm.exe 1792 RegAsm.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exeRegAsm.execmd.exedescription pid process target process PID 4564 wrote to memory of 4136 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 4136 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 4136 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 4564 wrote to memory of 1792 4564 0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe RegAsm.exe PID 1792 wrote to memory of 4140 1792 RegAsm.exe cmd.exe PID 1792 wrote to memory of 4140 1792 RegAsm.exe cmd.exe PID 1792 wrote to memory of 4140 1792 RegAsm.exe cmd.exe PID 4140 wrote to memory of 2556 4140 cmd.exe timeout.exe PID 4140 wrote to memory of 2556 4140 cmd.exe timeout.exe PID 4140 wrote to memory of 2556 4140 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe"C:\Users\Admin\AppData\Local\Temp\0c9d401e9b393d2e7e2e3c727ba6e3e83cde22df260731879a4e5b0350929574.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\EGDGCGCFHIEH" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1792-11-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-14-0x000000001B260000-0x000000001B4BF000-memory.dmpFilesize
2.4MB
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memory/1792-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-2-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-7-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-5-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-61-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-12-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-47-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-29-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-30-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1792-46-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4564-0-0x0000000000320000-0x0000000000321000-memory.dmpFilesize
4KB
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memory/4564-1-0x0000000000320000-0x0000000000321000-memory.dmpFilesize
4KB
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memory/4564-3-0x0000000000320000-0x0000000000321000-memory.dmpFilesize
4KB