Analysis
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max time kernel
146s -
max time network
149s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-05-2024 21:12
Static task
static1
Behavioral task
behavioral1
Sample
16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe
Resource
win10v2004-20240508-en
General
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Target
16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe
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Size
1.9MB
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MD5
1af7c31fde13c5b8e70a6946324e2fa3
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SHA1
293523f498bb7d006a3b0c962e22ceb811292b16
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SHA256
16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6
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SHA512
e6d8af2c41d5e5168772f0f9351fc19c702958c423314f4c96d1acc33fe306f2f06631febae604e44891f8be865db79e6f52b2cb0dd2a578dab58863f099adb5
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SSDEEP
49152:CdKfTn6vOJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ
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 behavioral2/memory/4856-2-0x0000000004010000-0x0000000004159000-memory.dmp family_vidar_v7 behavioral2/memory/2440-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-54-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-55-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-67-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-68-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral2/memory/2440-69-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4E2F.tmppid process 2440 kat4E2F.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:
16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exedescription pid process target process PID 4856 set thread context of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.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:
kat4E2F.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4E2F.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 3304 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4E2F.tmppid process 2440 kat4E2F.tmp 2440 kat4E2F.tmp 2440 kat4E2F.tmp 2440 kat4E2F.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exekat4E2F.tmpcmd.exedescription pid process target process PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 4856 wrote to memory of 2440 4856 16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe kat4E2F.tmp PID 2440 wrote to memory of 664 2440 kat4E2F.tmp cmd.exe PID 2440 wrote to memory of 664 2440 kat4E2F.tmp cmd.exe PID 2440 wrote to memory of 664 2440 kat4E2F.tmp cmd.exe PID 664 wrote to memory of 3304 664 cmd.exe timeout.exe PID 664 wrote to memory of 3304 664 cmd.exe timeout.exe PID 664 wrote to memory of 3304 664 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe"C:\Users\Admin\AppData\Local\Temp\16f68e14ac5306881f082a811eb3039891ed6a2e4e716e5f02f4cd00400b64c6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4856 -
C:\Users\Admin\AppData\Local\Temp\kat4E2F.tmpC:\Users\Admin\AppData\Local\Temp\kat4E2F.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2440 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4E2F.tmp" & rd /s /q "C:\ProgramData\HCAEHDHDAKJE" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:664 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:3304
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4E2F.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2440-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-22-0x00000000260A0000-0x00000000262FF000-memory.dmpFilesize
2.4MB
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memory/2440-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-69-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-68-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-54-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-55-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2440-67-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4856-2-0x0000000004010000-0x0000000004159000-memory.dmpFilesize
1.3MB
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memory/4856-0-0x00000000008B0000-0x00000000008B1000-memory.dmpFilesize
4KB
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memory/4856-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB