Analysis
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max time kernel
147s -
max time network
152s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-05-2024 01:08
Static task
static1
Behavioral task
behavioral1
Sample
f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe
Resource
win10v2004-20240226-en
General
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Target
f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe
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Size
2.0MB
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MD5
d7f77d42a23132970939cae13e3c69e4
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SHA1
97c97a856ea50ec95b8a03d18a85ea9ddd1be9ab
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SHA256
f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264
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SHA512
dd3b25ef014ffca945ad64e6f630e186f3f9488c69c4ccb47e26d1c5ddd0de0b495492e9c96d807e4563c7978e1d1480738fe8c871fb2fb44339580dbf59f586
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SSDEEP
49152:s4K3x1vUqJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18qtIuoITsdZ
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 13 IoCs
Processes:
resource yara_rule behavioral2/memory/4224-2-0x0000000004070000-0x00000000041B9000-memory.dmp family_vidar_v7 behavioral2/memory/2656-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2656-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4DF1.tmppid process 2656 kat4DF1.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:
f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exedescription pid process target process PID 4224 set thread context of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.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:
kat4DF1.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4DF1.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2768 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4DF1.tmppid process 2656 kat4DF1.tmp 2656 kat4DF1.tmp 2656 kat4DF1.tmp 2656 kat4DF1.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exekat4DF1.tmpcmd.exedescription pid process target process PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 4224 wrote to memory of 2656 4224 f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe kat4DF1.tmp PID 2656 wrote to memory of 1104 2656 kat4DF1.tmp cmd.exe PID 2656 wrote to memory of 1104 2656 kat4DF1.tmp cmd.exe PID 2656 wrote to memory of 1104 2656 kat4DF1.tmp cmd.exe PID 1104 wrote to memory of 2768 1104 cmd.exe timeout.exe PID 1104 wrote to memory of 2768 1104 cmd.exe timeout.exe PID 1104 wrote to memory of 2768 1104 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe"C:\Users\Admin\AppData\Local\Temp\f56d7ba5982b2c5f840b01077df9686a2aa9aac03148b82924402ec18cd05264.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4DF1.tmpC:\Users\Admin\AppData\Local\Temp\kat4DF1.tmp2⤵
- 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\kat4DF1.tmp" & rd /s /q "C:\ProgramData\JJJKFBAAAFHJ" & 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\kat4DF1.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2656-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-22-0x000000001B8F0000-0x000000001BB4F000-memory.dmpFilesize
2.4MB
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memory/2656-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2656-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4224-0-0x0000000002370000-0x0000000002371000-memory.dmpFilesize
4KB
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memory/4224-2-0x0000000004070000-0x00000000041B9000-memory.dmpFilesize
1.3MB
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memory/4224-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB