Analysis
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max time kernel
134s -
max time network
106s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 21:15
Static task
static1
Behavioral task
behavioral1
Sample
ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe
Resource
win10v2004-20240426-en
General
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Target
ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe
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Size
2.0MB
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MD5
b457981627e7c4d2f144fd1eaed6b2c8
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SHA1
0484a40ca8c48e9a993f5cd2d76a2369823a62ba
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SHA256
ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0
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SHA512
16c548c459d6ec9914df3faf6471c81027ed26712f18458e9e24d4b973a916789af48cde173b0a1bf6f42e186211324f11dc4940f0d8d1d23feda82f304275b4
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SSDEEP
49152:s4K3x1vU+JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18+tIuoITsdZ
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/2204-1-0x0000000004070000-0x00000000041B9000-memory.dmp family_vidar_v7 behavioral1/memory/4400-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-14-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-15-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-32-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-33-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-49-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-50-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-61-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-62-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-63-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/4400-66-0x0000000000400000-0x0000000000646000-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:
kat3BE0.tmpdescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation kat3BE0.tmp -
Executes dropped EXE 1 IoCs
Processes:
kat3BE0.tmppid process 4400 kat3BE0.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:
ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exedescription pid process target process PID 2204 set thread context of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.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:
kat3BE0.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3BE0.tmp -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 4116 timeout.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
kat3BE0.tmppid process 4400 kat3BE0.tmp 4400 kat3BE0.tmp 4400 kat3BE0.tmp 4400 kat3BE0.tmp -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exekat3BE0.tmpcmd.exedescription pid process target process PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 2204 wrote to memory of 4400 2204 ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe kat3BE0.tmp PID 4400 wrote to memory of 3060 4400 kat3BE0.tmp cmd.exe PID 4400 wrote to memory of 3060 4400 kat3BE0.tmp cmd.exe PID 4400 wrote to memory of 3060 4400 kat3BE0.tmp cmd.exe PID 3060 wrote to memory of 4116 3060 cmd.exe timeout.exe PID 3060 wrote to memory of 4116 3060 cmd.exe timeout.exe PID 3060 wrote to memory of 4116 3060 cmd.exe timeout.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe"C:\Users\Admin\AppData\Local\Temp\ca52b50c0069ac623ae8dea98081103b1765d59f97091b0ee101474fbb8d2ea0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2204 -
C:\Users\Admin\AppData\Local\Temp\kat3BE0.tmpC:\Users\Admin\AppData\Local\Temp\kat3BE0.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4400 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\kat3BE0.tmp" & rd /s /q "C:\ProgramData\KKEHDBAEGIII" & exit3⤵
- Suspicious use of WriteProcessMemory
PID:3060 -
C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
PID:4116
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat3BE0.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2204-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/2204-1-0x0000000004070000-0x00000000041B9000-memory.dmpFilesize
1.3MB
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memory/2204-0-0x00000000007D0000-0x00000000007D1000-memory.dmpFilesize
4KB
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memory/4400-15-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-33-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-14-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-18-0x000000001DBF0000-0x000000001DE4F000-memory.dmpFilesize
2.4MB
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memory/4400-32-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-49-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-50-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-61-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-62-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-63-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4400-66-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB