Analysis
- max time kernel
68s - max time network
130s - platform
windows10_x64 - resource
win10v20210408 - submitted
05/05/2021, 17:26
Static task
static1
Behavioral task
behavioral1
Sample
dc00eb5a66b87a51f308cb804916811d.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
dc00eb5a66b87a51f308cb804916811d.exe
Resource
win10v20210408
General
- Target dc00eb5a66b87a51f308cb804916811d.exe
- Size 842KB
- Sample210505-1bdnvz1k9a
- SHA256 e0fffaaa25dc5ace2bf9e00b3787ebb45299f98fc8d4dbe6aad888c03e6164aa
- MD5 dc00eb5a66b87a51f308cb804916811d
- SHA1 a9f6d4e6ec09aebde22a26a191d007c0ba471c94
- SHA512 a05db0d9de27dfc54e2ccf6b96e3e10b2f045b3c62c11383529def3bd9173d73ba2472e8ee9b20996e8d9942f0785b2b109a0cf007d98d21037fe2fec8b1d1b8
- MD5 SHA1 SHA512
Malware Config
Signatures
- Deletes Windows Defender Definitions 2 TTPs 1 IoCs
Uses mpcmdrun utility to delete all AV definitions.
pid Process 2200 mpcmdrun.exe - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Disables Task Manager via registry modification
- Downloads MZ/PE file
- Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\drivers\etc\hosts updatewin2.exe - Executes dropped EXE 4 IoCs
pid Process 3892 updatewin1.exe 2644 updatewin2.exe 3824 5.exe 696 updatewin1.exe - Loads dropped DLL 2 IoCs
pid Process 3824 5.exe 3824 5.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 204 icacls.exe - Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\295bb616-b108-4b9b-941f-3521ec46c734\\dc00eb5a66b87a51f308cb804916811d.exe\" --AutoStart" dc00eb5a66b87a51f308cb804916811d.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 12 api.2ip.ua 20 api.2ip.ua 11 api.2ip.ua - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 14 IoCs
pid pid_target Process procid_target 1164 3824 WerFault.exe 83 1872 3824 WerFault.exe 83 2636 3824 WerFault.exe 83 3716 3824 WerFault.exe 83 680 3824 WerFault.exe 83 2908 3824 WerFault.exe 83 2296 3824 WerFault.exe 83 2216 3824 WerFault.exe 83 2092 3824 WerFault.exe 83 2224 3824 WerFault.exe 83 2340 3824 WerFault.exe 83 2384 3824 WerFault.exe 83 2692 3824 WerFault.exe 83 2292 3824 WerFault.exe 83 - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 5.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 5.exe - Delays execution with timeout.exe 1 IoCs
pid Process 192 timeout.exe - Kills process with taskkill 1 IoCs
pid Process 2200 taskkill.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 dc00eb5a66b87a51f308cb804916811d.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 dc00eb5a66b87a51f308cb804916811d.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 996 dc00eb5a66b87a51f308cb804916811d.exe 996 dc00eb5a66b87a51f308cb804916811d.exe 1308 dc00eb5a66b87a51f308cb804916811d.exe 1308 dc00eb5a66b87a51f308cb804916811d.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1164 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 1872 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 2636 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe 3716 WerFault.exe - Suspicious use of AdjustPrivilegeToken 20 IoCs
description pid Process Token: SeRestorePrivilege 1164 WerFault.exe Token: SeBackupPrivilege 1164 WerFault.exe Token: SeDebugPrivilege 1164 WerFault.exe Token: SeDebugPrivilege 1872 WerFault.exe Token: SeDebugPrivilege 2636 WerFault.exe Token: SeDebugPrivilege 3716 WerFault.exe Token: SeDebugPrivilege 680 WerFault.exe Token: SeDebugPrivilege 2908 WerFault.exe Token: SeDebugPrivilege 2296 WerFault.exe Token: SeDebugPrivilege 2216 WerFault.exe Token: SeDebugPrivilege 2092 WerFault.exe Token: SeDebugPrivilege 2224 WerFault.exe Token: SeDebugPrivilege 2340 WerFault.exe Token: SeDebugPrivilege 2384 WerFault.exe Token: SeDebugPrivilege 2692 WerFault.exe Token: SeDebugPrivilege 2292 WerFault.exe Token: SeDebugPrivilege 2200 taskkill.exe Token: SeDebugPrivilege 2384 powershell.exe Token: SeDebugPrivilege 4036 powershell.exe Token: SeDebugPrivilege 2640 powershell.exe - Suspicious use of WriteProcessMemory 41 IoCs
description pid Process procid_target PID 996 wrote to memory of 204 996 dc00eb5a66b87a51f308cb804916811d.exe 75 PID 996 wrote to memory of 204 996 dc00eb5a66b87a51f308cb804916811d.exe 75 PID 996 wrote to memory of 204 996 dc00eb5a66b87a51f308cb804916811d.exe 75 PID 996 wrote to memory of 1308 996 dc00eb5a66b87a51f308cb804916811d.exe 76 PID 996 wrote to memory of 1308 996 dc00eb5a66b87a51f308cb804916811d.exe 76 PID 996 wrote to memory of 1308 996 dc00eb5a66b87a51f308cb804916811d.exe 76 PID 1308 wrote to memory of 3892 1308 dc00eb5a66b87a51f308cb804916811d.exe 80 PID 1308 wrote to memory of 3892 1308 dc00eb5a66b87a51f308cb804916811d.exe 80 PID 1308 wrote to memory of 3892 1308 dc00eb5a66b87a51f308cb804916811d.exe 80 PID 1308 wrote to memory of 2644 1308 dc00eb5a66b87a51f308cb804916811d.exe 82 PID 1308 wrote to memory of 2644 1308 dc00eb5a66b87a51f308cb804916811d.exe 82 PID 1308 wrote to memory of 2644 1308 dc00eb5a66b87a51f308cb804916811d.exe 82 PID 1308 wrote to memory of 3824 1308 dc00eb5a66b87a51f308cb804916811d.exe 83 PID 1308 wrote to memory of 3824 1308 dc00eb5a66b87a51f308cb804916811d.exe 83 PID 1308 wrote to memory of 3824 1308 dc00eb5a66b87a51f308cb804916811d.exe 83 PID 3892 wrote to memory of 696 3892 updatewin1.exe 98 PID 3892 wrote to memory of 696 3892 updatewin1.exe 98 PID 3892 wrote to memory of 696 3892 updatewin1.exe 98 PID 3824 wrote to memory of 3176 3824 5.exe 100 PID 3824 wrote to memory of 3176 3824 5.exe 100 PID 3824 wrote to memory of 3176 3824 5.exe 100 PID 3176 wrote to memory of 2200 3176 cmd.exe 102 PID 3176 wrote to memory of 2200 3176 cmd.exe 102 PID 3176 wrote to memory of 2200 3176 cmd.exe 102 PID 3176 wrote to memory of 192 3176 cmd.exe 103 PID 3176 wrote to memory of 192 3176 cmd.exe 103 PID 3176 wrote to memory of 192 3176 cmd.exe 103 PID 696 wrote to memory of 2384 696 updatewin1.exe 104 PID 696 wrote to memory of 2384 696 updatewin1.exe 104 PID 696 wrote to memory of 2384 696 updatewin1.exe 104 PID 696 wrote to memory of 4036 696 updatewin1.exe 106 PID 696 wrote to memory of 4036 696 updatewin1.exe 106 PID 696 wrote to memory of 4036 696 updatewin1.exe 106 PID 4036 wrote to memory of 2640 4036 powershell.exe 108 PID 4036 wrote to memory of 2640 4036 powershell.exe 108 PID 4036 wrote to memory of 2640 4036 powershell.exe 108 PID 696 wrote to memory of 2200 696 updatewin1.exe 110 PID 696 wrote to memory of 2200 696 updatewin1.exe 110 PID 696 wrote to memory of 204 696 updatewin1.exe 112 PID 696 wrote to memory of 204 696 updatewin1.exe 112 PID 696 wrote to memory of 204 696 updatewin1.exe 112
Processes
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C:\Users\Admin\AppData\Local\Temp\dc00eb5a66b87a51f308cb804916811d.exe"C:\Users\Admin\AppData\Local\Temp\dc00eb5a66b87a51f308cb804916811d.exe"1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:996 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\295bb616-b108-4b9b-941f-3521ec46c734" /deny *S-1-1-0:(OI)(CI)(DE,DC)2⤵
- Modifies file permissions
PID:204
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C:\Users\Admin\AppData\Local\Temp\dc00eb5a66b87a51f308cb804916811d.exe"C:\Users\Admin\AppData\Local\Temp\dc00eb5a66b87a51f308cb804916811d.exe" --Admin IsNotAutoStart IsNotTask2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1308 -
C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\updatewin1.exe"C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\updatewin1.exe"3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3892 -
C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\updatewin1.exe"C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\updatewin1.exe" --Admin4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:696 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned5⤵
- Suspicious use of AdjustPrivilegeToken
PID:2384
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""C:\Users\Admin\AppData\Local\script.ps1""' -Verb RunAs}"5⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4036 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\script.ps16⤵
- Suspicious use of AdjustPrivilegeToken
PID:2640
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C:\Program Files\Windows Defender\mpcmdrun.exe"C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all5⤵
- Deletes Windows Defender Definitions
PID:2200
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""5⤵PID:204
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C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\updatewin2.exe"C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\updatewin2.exe"3⤵
- Drops file in Drivers directory
- Executes dropped EXE
PID:2644
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C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\5.exe"C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\5.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:3824 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 8404⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1164
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 9324⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1872
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 10764⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2636
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 10804⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3716
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 10884⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:680
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 11124⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2908
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 14044⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2296
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 14484⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2216
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 16684⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2092
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 16164⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2224
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 15724⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2340
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 16884⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2384
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 17044⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2692
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 18244⤵
- Program crash
- Suspicious use of AdjustPrivilegeToken
PID:2292
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im 5.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\28e7063b-c42a-4888-82a3-fb17123f7fca\5.exe" & del C:\ProgramData\*.dll & exit4⤵
- Suspicious use of WriteProcessMemory
PID:3176 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im 5.exe /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2200
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C:\Windows\SysWOW64\timeout.exetimeout /t 65⤵
- Delays execution with timeout.exe
PID:192
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