Analysis
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max time kernel
92s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
28-05-2024 01:18
Static task
static1
Behavioral task
behavioral1
Sample
b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe
Resource
win10v2004-20240508-en
General
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Target
b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe
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Size
1.9MB
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MD5
d9afd3460f38269b64052ad2e048a2de
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SHA1
5cc52d92d078aa029b31d321885a421f28f2ddaf
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SHA256
b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704
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SHA512
4050f2d87e84fa6236412f0a214377b6e81ba648f2c534ea0e44495be4793a8502eee49b2c7f5086bfee64b9b98f2329f2362a3673a93aa39759c2eb59bcb87d
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SSDEEP
49152:CdKfTn6v+JtTF+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 8 IoCs
Processes:
resource yara_rule behavioral1/memory/720-1-0x0000000004110000-0x0000000004259000-memory.dmp family_vidar_v7 behavioral1/memory/1448-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1448-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1448-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1448-17-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1448-18-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1448-35-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/1448-36-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat4B51.tmppid process 1448 kat4B51.tmp -
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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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:
b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exedescription pid process target process PID 720 set thread context of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat4B51.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat4B51.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat4B51.tmppid process 1448 kat4B51.tmp 1448 kat4B51.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exedescription pid process target process PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp PID 720 wrote to memory of 1448 720 b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe kat4B51.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe"C:\Users\Admin\AppData\Local\Temp\b3a22e186ee9eabe1cc45fbb9da042524266fb6f6f5f77d687bd1ab3484b4704.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:720 -
C:\Users\Admin\AppData\Local\Temp\kat4B51.tmpC:\Users\Admin\AppData\Local\Temp\kat4B51.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1448
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat4B51.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/720-0-0x00000000007A0000-0x00000000007A1000-memory.dmpFilesize
4KB
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memory/720-1-0x0000000004110000-0x0000000004259000-memory.dmpFilesize
1.3MB
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memory/720-10-0x0000000000400000-0x00000000005EC000-memory.dmpFilesize
1.9MB
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memory/1448-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1448-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1448-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1448-17-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1448-18-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1448-20-0x000000001B810000-0x000000001BA6F000-memory.dmpFilesize
2.4MB
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memory/1448-35-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/1448-36-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB