Analysis
- max time kernel
152s - max time network
110s - platform
windows10_x64 - resource
win10v20210408 - submitted
05/05/2021, 08:07
Static task
static1
Behavioral task
behavioral1
Sample
a83af189_by_Libranalysis.exe
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
a83af189_by_Libranalysis.exe
Resource
win10v20210408
windows10_x64
0 signatures
0 seconds
General
- Target a83af189_by_Libranalysis.exe
- Size 1.6MB
- Sample210505-e8d6dz4jfn
- SHA256 9d1077e6f08763e2eda061f1ac773bd7dbe36bb6aa547abe75163dc46de442cd
- MD5 a83af1893775bd6ac6c4c08aa62e7394
- SHA1 a129913be9171734126055c82bcf56ccbbf98315
- SHA512 838d5a43fb43660b19beb89614e79fcdf92d0b3304a7958b726b760edfe4382d081cd59185f7ce2153443879c491cf1d6255f0bad821111122e91c5da72fca24
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\YCcgMYYQ\\bSMwsgEM.exe," a83af189_by_Libranalysis.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\ProgramData\\YCcgMYYQ\\bSMwsgEM.exe," a83af189_by_Libranalysis.exe - Modifies visibility of file extensions in Explorer 2 TTPs
- Executes dropped EXE 4 IoCs
pid Process 416 qCYAIYYE.exe 2872 bSMwsgEM.exe 184 zUYsYcwM.exe 3916 setup.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\International\Geo\Nation bSMwsgEM.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\bSMwsgEM.exe = "C:\\ProgramData\\YCcgMYYQ\\bSMwsgEM.exe" bSMwsgEM.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\bSMwsgEM.exe = "C:\\ProgramData\\YCcgMYYQ\\bSMwsgEM.exe" zUYsYcwM.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\qCYAIYYE.exe = "C:\\Users\\Admin\\WwsAUskI\\qCYAIYYE.exe" a83af189_by_Libranalysis.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\bSMwsgEM.exe = "C:\\ProgramData\\YCcgMYYQ\\bSMwsgEM.exe" a83af189_by_Libranalysis.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\qCYAIYYE.exe = "C:\\Users\\Admin\\WwsAUskI\\qCYAIYYE.exe" qCYAIYYE.exe - Drops file in System32 directory 3 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\WwsAUskI\qCYAIYYE zUYsYcwM.exe File created C:\Windows\SysWOW64\shell32.dll.exe bSMwsgEM.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\WwsAUskI zUYsYcwM.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Modifies registry key 1 TTPs 3 IoCs
pid Process 772 reg.exe 752 reg.exe 4016 reg.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 812 a83af189_by_Libranalysis.exe 812 a83af189_by_Libranalysis.exe 812 a83af189_by_Libranalysis.exe 812 a83af189_by_Libranalysis.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2872 bSMwsgEM.exe - Suspicious use of FindShellTrayWindow 64 IoCs
pid Process 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe 2872 bSMwsgEM.exe - Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 812 wrote to memory of 416 812 a83af189_by_Libranalysis.exe 75 PID 812 wrote to memory of 416 812 a83af189_by_Libranalysis.exe 75 PID 812 wrote to memory of 416 812 a83af189_by_Libranalysis.exe 75 PID 812 wrote to memory of 2872 812 a83af189_by_Libranalysis.exe 76 PID 812 wrote to memory of 2872 812 a83af189_by_Libranalysis.exe 76 PID 812 wrote to memory of 2872 812 a83af189_by_Libranalysis.exe 76 PID 812 wrote to memory of 1848 812 a83af189_by_Libranalysis.exe 78 PID 812 wrote to memory of 1848 812 a83af189_by_Libranalysis.exe 78 PID 812 wrote to memory of 1848 812 a83af189_by_Libranalysis.exe 78 PID 812 wrote to memory of 772 812 a83af189_by_Libranalysis.exe 80 PID 812 wrote to memory of 772 812 a83af189_by_Libranalysis.exe 80 PID 812 wrote to memory of 772 812 a83af189_by_Libranalysis.exe 80 PID 812 wrote to memory of 752 812 a83af189_by_Libranalysis.exe 82 PID 812 wrote to memory of 752 812 a83af189_by_Libranalysis.exe 82 PID 812 wrote to memory of 752 812 a83af189_by_Libranalysis.exe 82 PID 812 wrote to memory of 4016 812 a83af189_by_Libranalysis.exe 84 PID 812 wrote to memory of 4016 812 a83af189_by_Libranalysis.exe 84 PID 812 wrote to memory of 4016 812 a83af189_by_Libranalysis.exe 84 PID 1848 wrote to memory of 3916 1848 cmd.exe 86 PID 1848 wrote to memory of 3916 1848 cmd.exe 86 PID 1848 wrote to memory of 3916 1848 cmd.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\a83af189_by_Libranalysis.exe"C:\Users\Admin\AppData\Local\Temp\a83af189_by_Libranalysis.exe"1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:812 -
C:\Users\Admin\WwsAUskI\qCYAIYYE.exe"C:\Users\Admin\WwsAUskI\qCYAIYYE.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
PID:416
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C:\ProgramData\YCcgMYYQ\bSMwsgEM.exe"C:\ProgramData\YCcgMYYQ\bSMwsgEM.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
PID:2872
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\setup.exe2⤵
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Users\Admin\AppData\Local\Temp\setup.exeC:\Users\Admin\AppData\Local\Temp\setup.exe3⤵
- Executes dropped EXE
PID:3916
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C:\Windows\SysWOW64\reg.exereg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 12⤵
- Modifies registry key
PID:772
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C:\Windows\SysWOW64\reg.exereg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 22⤵
- Modifies registry key
PID:752
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C:\Windows\SysWOW64\reg.exereg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f2⤵
- Modifies registry key
PID:4016
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C:\ProgramData\IMMkkswE\zUYsYcwM.exeC:\ProgramData\IMMkkswE\zUYsYcwM.exe1⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in System32 directory
PID:184