Analysis
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max time kernel
94s -
max time network
103s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
26-05-2024 22:54
Static task
static1
Behavioral task
behavioral1
Sample
6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe
Resource
win10v2004-20240426-en
General
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Target
6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe
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Size
2.0MB
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MD5
8d5538c1c6f7e89f9c0ca471caff877d
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SHA1
8f4c43f52c4d749a7e10ef515248d7279b14072d
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SHA256
6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283
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SHA512
958c4e53b79fa6bdb6c821292e833bd77cbdbf2bb76d0ba5c6fa7a1861522573f405b891e9f72141cf7978a5ba3a3e8b7b67a3f1ae401d01286f557c6808a29b
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SSDEEP
49152:OePpQElJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEltIuoITsdZ
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 14 IoCs
Processes:
resource yara_rule behavioral1/memory/2396-2-0x0000000004140000-0x0000000004289000-memory.dmp family_vidar_v7 behavioral1/memory/3436-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-10-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-49-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-50-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-61-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/3436-64-0x0000000000400000-0x0000000000646000-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:
kat326A.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation kat326A.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat326A.tmppid process 3436 kat326A.tmp -
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:
6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exedescription pid process target process PID 2396 set thread context of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp -
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:
kat326A.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat326A.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3716 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat326A.tmppid process 3436 kat326A.tmp 3436 kat326A.tmp 3436 kat326A.tmp 3436 kat326A.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exekat326A.tmpcmd.exedescription pid process target process PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 2396 wrote to memory of 3436 2396 6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe kat326A.tmp PID 3436 wrote to memory of 2228 3436 kat326A.tmp cmd.exe PID 3436 wrote to memory of 2228 3436 kat326A.tmp cmd.exe PID 3436 wrote to memory of 2228 3436 kat326A.tmp cmd.exe PID 2228 wrote to memory of 3716 2228 cmd.exe timeout.exe PID 2228 wrote to memory of 3716 2228 cmd.exe timeout.exe PID 2228 wrote to memory of 3716 2228 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe"C:\Users\Admin\AppData\Local\Temp\6e8bb0aaa60ca64d389224b111401d4f0761e87af9e41b68a0f9241bedef5283.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat326A.tmpC:\Users\Admin\AppData\Local\Temp\kat326A.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- 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 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat326A.tmp" & rd /s /q "C:\ProgramData\HJKJEHJKJEBG" & 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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C:\Users\Admin\AppData\Local\Temp\kat326A.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2396-9-0x0000000000400000-0x0000000000612000-memory.dmpFilesize
2.1MB
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memory/2396-2-0x0000000004140000-0x0000000004289000-memory.dmpFilesize
1.3MB
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memory/2396-0-0x0000000002270000-0x0000000002271000-memory.dmpFilesize
4KB
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memory/3436-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-17-0x000000001B720000-0x000000001B97F000-memory.dmpFilesize
2.4MB
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memory/3436-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-10-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-49-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-50-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-61-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/3436-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB