Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
27-05-2024 23:28
Static task
static1
Behavioral task
behavioral1
Sample
c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe
Resource
win10v2004-20240508-en
General
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Target
c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe
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Size
1.9MB
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MD5
ba151ce52420572cb59fc542d1f84e83
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SHA1
76f2f92508626f4ba53c8ccce7acf2664bc00c52
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SHA256
c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9
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SHA512
d6140af2b7ca554405d3721018f18d36833d1872e43f245605dbfa42f299119531d1cbbf90b1277ddcac9490435b0e5d72457b9e9f114c63eb831c7ce3c9a1a8
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SSDEEP
49152:CdKfTn6vOJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnttIuoITsdZ
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/4716-1-0x0000000004040000-0x0000000004189000-memory.dmp family_vidar_v7 behavioral1/memory/1220-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-52-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-53-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-64-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-65-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-66-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1220-69-0x0000000000400000-0x0000000000646000-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:
kat4D45.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation kat4D45.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat4D45.tmppid process 1220 kat4D45.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:
c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exedescription pid process target process PID 4716 set thread context of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.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:
kat4D45.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4D45.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4724 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat4D45.tmppid process 1220 kat4D45.tmp 1220 kat4D45.tmp 1220 kat4D45.tmp 1220 kat4D45.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exekat4D45.tmpcmd.exedescription pid process target process PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 4716 wrote to memory of 1220 4716 c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe kat4D45.tmp PID 1220 wrote to memory of 724 1220 kat4D45.tmp cmd.exe PID 1220 wrote to memory of 724 1220 kat4D45.tmp cmd.exe PID 1220 wrote to memory of 724 1220 kat4D45.tmp cmd.exe PID 724 wrote to memory of 4724 724 cmd.exe timeout.exe PID 724 wrote to memory of 4724 724 cmd.exe timeout.exe PID 724 wrote to memory of 4724 724 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe"C:\Users\Admin\AppData\Local\Temp\c77d70dd9dd6cda0c9eea8d0d8d8dc96def8f837bfbb18a396c459a3d143a6f9.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4716 -
C:\Users\Admin\AppData\Local\Temp\kat4D45.tmpC:\Users\Admin\AppData\Local\Temp\kat4D45.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat4D45.tmp" & rd /s /q "C:\ProgramData\CFHCBKKFIJJJ" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:724 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:4724
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4D45.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/1220-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-64-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-21-0x000000001DC70000-0x000000001DECF000-memory.dmpFilesize
2.4MB
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memory/1220-69-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-65-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-52-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-53-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1220-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4716-0-0x00000000006D0000-0x00000000006D1000-memory.dmpFilesize
4KB
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memory/4716-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/4716-1-0x0000000004040000-0x0000000004189000-memory.dmpFilesize
1.3MB