Analysis
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max time kernel
40s -
max time network
50s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
29-06-2024 21:53
Static task
static1
Behavioral task
behavioral1
Sample
0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe
Resource
win10v2004-20240508-en
General
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Target
0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe
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Size
2.2MB
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MD5
a52faf59a5816d92372c3c412ec1f6e1
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SHA1
24a57fba5697a9d961e7d92d84296322404e7db8
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SHA256
0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85
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SHA512
6fa9d83f3c912038a8f25b4797b48df6fa9b097ca90d0d6d615baab9a78ad70332aea21f010d26345c33aff29fac7c0c2d811da3d8db89c6288c67affa32623c
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SSDEEP
49152:qpjNvr9ySAOmw4VHHO+SASagXkJr4MDkUwm:qpjNp7p4VHH8n5A
Malware Config
Extracted
vidar
https://t.me/g067n
https://steamcommunity.com/profiles/76561199707802586
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
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Detect Vidar Stealer 9 IoCs
Processes:
resource yara_rule behavioral1/memory/2852-1-0x0000000003FE0000-0x00000000040F0000-memory.dmp family_vidar_v7 behavioral1/memory/996-8-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/996-10-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/996-4-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/996-11-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/996-12-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/996-13-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/996-14-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 behavioral1/memory/996-15-0x0000000000400000-0x0000000000648000-memory.dmp family_vidar_v7 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
kat4AE4.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation kat4AE4.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat4AE4.tmppid process 996 kat4AE4.tmp -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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:
0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exedescription pid process target process PID 2852 set thread context of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.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 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4AE4.tmpdescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 kat4AE4.tmp Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4AE4.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 840 timeout.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
kat4AE4.tmppid process 996 kat4AE4.tmp 996 kat4AE4.tmp 996 kat4AE4.tmp 996 kat4AE4.tmp 996 kat4AE4.tmp 996 kat4AE4.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exekat4AE4.tmpcmd.exedescription pid process target process PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 2852 wrote to memory of 996 2852 0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe kat4AE4.tmp PID 996 wrote to memory of 1736 996 kat4AE4.tmp cmd.exe PID 996 wrote to memory of 1736 996 kat4AE4.tmp cmd.exe PID 996 wrote to memory of 1736 996 kat4AE4.tmp cmd.exe PID 1736 wrote to memory of 840 1736 cmd.exe timeout.exe PID 1736 wrote to memory of 840 1736 cmd.exe timeout.exe PID 1736 wrote to memory of 840 1736 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe"C:\Users\Admin\AppData\Local\Temp\0a8434c7c5daacbf4b0265e32bda9f97d09563ce856add801c4dc04067bb2a85.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kat4AE4.tmpC:\Users\Admin\AppData\Local\Temp\kat4AE4.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\kat4AE4.tmp" & rd /s /q "C:\ProgramData\FCAFIJJJKEGI" & 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\kat4AE4.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/996-8-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/996-10-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/996-4-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/996-11-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/996-12-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/996-13-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/996-14-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/996-15-0x0000000000400000-0x0000000000648000-memory.dmpFilesize
2.3MB
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memory/2852-0-0x00000000022A0000-0x00000000022A1000-memory.dmpFilesize
4KB
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memory/2852-1-0x0000000003FE0000-0x00000000040F0000-memory.dmpFilesize
1.1MB
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memory/2852-9-0x0000000000400000-0x0000000000635000-memory.dmpFilesize
2.2MB