Analysis
- max time kernel
126s - max time network
108s - platform
windows7_x64 - resource
win7v20210408 - submitted
26/06/2021, 08:09
Static task
static1
Behavioral task
behavioral1
Sample
b95107de7ede70408944caf2a5795044.exe
Resource
win7v20210408
0 signatures
0 seconds
General
- Target b95107de7ede70408944caf2a5795044.exe
- Size 1.1MB
- Sample210626-cb4813phfa
- SHA256 db6707dfd3c466dd3265628f922abb9908916f58ee47d9575cc45233a858e3fd
- MD5 b95107de7ede70408944caf2a5795044
- SHA1 b337066e2a3ab998c772c07294a09ece998912e8
- SHA512 c0a9f51dd1f4695b4ba9fb7d9ec9cbe60936f7ffdd7a653d506567b6cb0dfacbd37509129922f074a7ad466938ee12196afc39ff2a170b94173fab2ae58fc957
- MD5 SHA1 SHA512
Malware Config
Signatures
- Blocklisted process makes network request 2 IoCs
flow pid Process 3 1760 rundll32.exe 4 1456 rundll32.exe - Loads dropped DLL 2 IoCs
pid Process 1760 rundll32.exe 1456 rundll32.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1456 set thread context of 1300 1456 rundll32.exe 32 - Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\PROGRA~3\Bklngfpngf\Vhxwcgzi.tmp rundll32.exe File created C:\PROGRA~3\Bklngfpngf\kgjocbpkfku.tmp rundll32.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 21 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Component Information rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\VendorIdentifier rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Configuration Data rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\FeatureSet rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Component Information rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Update Status rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\Platform ID rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key enumerated \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Status rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\290B827C28F2406A119F7DF40297226A44D5A117 rundll32.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\290B827C28F2406A119F7DF40297226A44D5A117\Blob = 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 rundll32.exe - Suspicious behavior: EnumeratesProcesses 10 IoCs
pid Process 1456 rundll32.exe 1456 rundll32.exe 1456 rundll32.exe 1456 rundll32.exe 916 powershell.exe 916 powershell.exe 1456 rundll32.exe 1456 rundll32.exe 1796 powershell.exe 1796 powershell.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1456 rundll32.exe Token: SeDebugPrivilege 916 powershell.exe Token: SeDebugPrivilege 1796 powershell.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1456 rundll32.exe - Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 1968 wrote to memory of 1760 1968 b95107de7ede70408944caf2a5795044.exe 29 PID 1968 wrote to memory of 1760 1968 b95107de7ede70408944caf2a5795044.exe 29 PID 1968 wrote to memory of 1760 1968 b95107de7ede70408944caf2a5795044.exe 29 PID 1968 wrote to memory of 1760 1968 b95107de7ede70408944caf2a5795044.exe 29 PID 1968 wrote to memory of 1760 1968 b95107de7ede70408944caf2a5795044.exe 29 PID 1968 wrote to memory of 1760 1968 b95107de7ede70408944caf2a5795044.exe 29 PID 1968 wrote to memory of 1760 1968 b95107de7ede70408944caf2a5795044.exe 29 PID 1760 wrote to memory of 1456 1760 rundll32.exe 30 PID 1760 wrote to memory of 1456 1760 rundll32.exe 30 PID 1760 wrote to memory of 1456 1760 rundll32.exe 30 PID 1760 wrote to memory of 1456 1760 rundll32.exe 30 PID 1760 wrote to memory of 1456 1760 rundll32.exe 30 PID 1760 wrote to memory of 1456 1760 rundll32.exe 30 PID 1760 wrote to memory of 1456 1760 rundll32.exe 30 PID 1456 wrote to memory of 1300 1456 rundll32.exe 32 PID 1456 wrote to memory of 1300 1456 rundll32.exe 32 PID 1456 wrote to memory of 1300 1456 rundll32.exe 32 PID 1456 wrote to memory of 1300 1456 rundll32.exe 32 PID 1456 wrote to memory of 1300 1456 rundll32.exe 32 PID 1456 wrote to memory of 916 1456 rundll32.exe 34 PID 1456 wrote to memory of 916 1456 rundll32.exe 34 PID 1456 wrote to memory of 916 1456 rundll32.exe 34 PID 1456 wrote to memory of 916 1456 rundll32.exe 34 PID 1456 wrote to memory of 1796 1456 rundll32.exe 37 PID 1456 wrote to memory of 1796 1456 rundll32.exe 37 PID 1456 wrote to memory of 1796 1456 rundll32.exe 37 PID 1456 wrote to memory of 1796 1456 rundll32.exe 37 PID 1796 wrote to memory of 1532 1796 powershell.exe 39 PID 1796 wrote to memory of 1532 1796 powershell.exe 39 PID 1796 wrote to memory of 1532 1796 powershell.exe 39 PID 1796 wrote to memory of 1532 1796 powershell.exe 39 PID 1456 wrote to memory of 960 1456 rundll32.exe 40 PID 1456 wrote to memory of 960 1456 rundll32.exe 40 PID 1456 wrote to memory of 960 1456 rundll32.exe 40 PID 1456 wrote to memory of 960 1456 rundll32.exe 40 PID 1456 wrote to memory of 1468 1456 rundll32.exe 42 PID 1456 wrote to memory of 1468 1456 rundll32.exe 42 PID 1456 wrote to memory of 1468 1456 rundll32.exe 42 PID 1456 wrote to memory of 1468 1456 rundll32.exe 42
Processes
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C:\Users\Admin\AppData\Local\Temp\b95107de7ede70408944caf2a5795044.exe"C:\Users\Admin\AppData\Local\Temp\b95107de7ede70408944caf2a5795044.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1968 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\B95107~1.TMP,S C:\Users\Admin\AppData\Local\Temp\B95107~1.EXE2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1760 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\PROGRA~3\BKLNGF~1\KGJOCB~1.TMP,jENJUFVMN0Y= C:\Users\Admin\AppData\Local\Temp\B95107~1.TMP3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1456 -
C:\Windows\system32\rundll32.exeC:\Windows\system32\rundll32.exe C:\Windows\system32\shell32.dll,#61 156054⤵PID:1300
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmpFD43.tmp.ps1"4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:916
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmp209D.tmp.ps1"4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1796 -
C:\Windows\SysWOW64\nslookup.exe"C:\Windows\system32\nslookup.exe" -type=any localhost5⤵PID:1532
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C:\Windows\SysWOW64\schtasks.exeschtasks /End /tn \Microsoft\Windows\Wininet\CacheTask4⤵PID:960
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C:\Windows\SysWOW64\schtasks.exeschtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask4⤵PID:1468
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