Analysis
- max time kernel
80s - max time network
149s - platform
windows10_x64 - resource
win10v20210408 - submitted
08/06/2021, 07:09
Static task
static1
Behavioral task
behavioral1
Sample
9df2a0977fde90af161aaf7a14457c14.exe
Resource
win7v20210408
0 signatures
0 seconds
General
- Target 9df2a0977fde90af161aaf7a14457c14.exe
- Size 871KB
- Sample210608-gn3hbycebe
- SHA256 7a2f648caf2fab403fc84e7c5a3f0d89e52e8f3b0c2492a26588f094e5981c9b
- MD5 9df2a0977fde90af161aaf7a14457c14
- SHA1 5ab6e880f0cacf77f75dad054aca7d6ba3dff74f
- SHA512 9a69c78349a1bcac0ed40594a738fbdcf5db1308f7e5b67d25949af144468338f02af2d2a33babc86a48d02080199c17ce997418754b2057ec992a2d5b9d22f3
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
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vidar
Version
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39.3
Botnet
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517
C2
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https://bandakere.tumblr.com
Attributes
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profile_id
517
Signatures
- Deletes Windows Defender Definitions 2 TTPs 1 IoCs
Uses mpcmdrun utility to delete all AV definitions.
pid Process 2384 mpcmdrun.exe - Vidar Stealer 4 IoCs
resource yara_rule behavioral2/memory/1492-142-0x0000000000400000-0x000000000049B000-memory.dmp family_vidar behavioral2/memory/1492-143-0x00000000004680AD-mapping.dmp family_vidar behavioral2/memory/960-145-0x00000000020B0000-0x0000000002148000-memory.dmp family_vidar behavioral2/memory/1492-146-0x0000000000400000-0x000000000049B000-memory.dmp family_vidar - 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 5 IoCs
pid Process 1372 updatewin1.exe 1752 updatewin2.exe 960 5.exe 3068 updatewin1.exe 1492 5.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 1356 icacls.exe - 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\\d6fc4eda-b46f-4e4e-936c-1b3f9fdfde9d\\9df2a0977fde90af161aaf7a14457c14.exe\" --AutoStart" 9df2a0977fde90af161aaf7a14457c14.exe - 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 10 api.2ip.ua 11 api.2ip.ua 20 api.2ip.ua - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 744 set thread context of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 2148 set thread context of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 960 set thread context of 1492 960 5.exe 87 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
pid pid_target Process procid_target 2560 1492 WerFault.exe 87 -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 9df2a0977fde90af161aaf7a14457c14.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 9df2a0977fde90af161aaf7a14457c14.exe - Suspicious behavior: EnumeratesProcesses 30 IoCs
pid Process 2376 9df2a0977fde90af161aaf7a14457c14.exe 2376 9df2a0977fde90af161aaf7a14457c14.exe 2580 9df2a0977fde90af161aaf7a14457c14.exe 2580 9df2a0977fde90af161aaf7a14457c14.exe 2616 powershell.exe 2616 powershell.exe 2616 powershell.exe 2616 powershell.exe 2740 powershell.exe 2740 powershell.exe 2740 powershell.exe 2320 powershell.exe 2320 powershell.exe 2320 powershell.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe 2560 WerFault.exe - Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeDebugPrivilege 2616 powershell.exe Token: SeDebugPrivilege 2740 powershell.exe Token: SeDebugPrivilege 2320 powershell.exe Token: SeRestorePrivilege 2560 WerFault.exe Token: SeBackupPrivilege 2560 WerFault.exe Token: SeDebugPrivilege 2560 WerFault.exe - Suspicious use of WriteProcessMemory 60 IoCs
description pid Process procid_target PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 744 wrote to memory of 2376 744 9df2a0977fde90af161aaf7a14457c14.exe 77 PID 2376 wrote to memory of 1356 2376 9df2a0977fde90af161aaf7a14457c14.exe 78 PID 2376 wrote to memory of 1356 2376 9df2a0977fde90af161aaf7a14457c14.exe 78 PID 2376 wrote to memory of 1356 2376 9df2a0977fde90af161aaf7a14457c14.exe 78 PID 2376 wrote to memory of 2148 2376 9df2a0977fde90af161aaf7a14457c14.exe 79 PID 2376 wrote to memory of 2148 2376 9df2a0977fde90af161aaf7a14457c14.exe 79 PID 2376 wrote to memory of 2148 2376 9df2a0977fde90af161aaf7a14457c14.exe 79 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2148 wrote to memory of 2580 2148 9df2a0977fde90af161aaf7a14457c14.exe 82 PID 2580 wrote to memory of 1372 2580 9df2a0977fde90af161aaf7a14457c14.exe 83 PID 2580 wrote to memory of 1372 2580 9df2a0977fde90af161aaf7a14457c14.exe 83 PID 2580 wrote to memory of 1372 2580 9df2a0977fde90af161aaf7a14457c14.exe 83 PID 2580 wrote to memory of 1752 2580 9df2a0977fde90af161aaf7a14457c14.exe 84 PID 2580 wrote to memory of 1752 2580 9df2a0977fde90af161aaf7a14457c14.exe 84 PID 2580 wrote to memory of 1752 2580 9df2a0977fde90af161aaf7a14457c14.exe 84 PID 2580 wrote to memory of 960 2580 9df2a0977fde90af161aaf7a14457c14.exe 85 PID 2580 wrote to memory of 960 2580 9df2a0977fde90af161aaf7a14457c14.exe 85 PID 2580 wrote to memory of 960 2580 9df2a0977fde90af161aaf7a14457c14.exe 85 PID 1372 wrote to memory of 3068 1372 updatewin1.exe 86 PID 1372 wrote to memory of 3068 1372 updatewin1.exe 86 PID 1372 wrote to memory of 3068 1372 updatewin1.exe 86 PID 960 wrote to memory of 1492 960 5.exe 87 PID 960 wrote to memory of 1492 960 5.exe 87 PID 960 wrote to memory of 1492 960 5.exe 87 PID 960 wrote to memory of 1492 960 5.exe 87 PID 960 wrote to memory of 1492 960 5.exe 87 PID 960 wrote to memory of 1492 960 5.exe 87 PID 960 wrote to memory of 1492 960 5.exe 87 PID 960 wrote to memory of 1492 960 5.exe 87 PID 3068 wrote to memory of 2616 3068 updatewin1.exe 88 PID 3068 wrote to memory of 2616 3068 updatewin1.exe 88 PID 3068 wrote to memory of 2616 3068 updatewin1.exe 88 PID 3068 wrote to memory of 2740 3068 updatewin1.exe 90 PID 3068 wrote to memory of 2740 3068 updatewin1.exe 90 PID 3068 wrote to memory of 2740 3068 updatewin1.exe 90 PID 2740 wrote to memory of 2320 2740 powershell.exe 92 PID 2740 wrote to memory of 2320 2740 powershell.exe 92 PID 2740 wrote to memory of 2320 2740 powershell.exe 92 PID 3068 wrote to memory of 2384 3068 updatewin1.exe 94 PID 3068 wrote to memory of 2384 3068 updatewin1.exe 94 PID 3068 wrote to memory of 1916 3068 updatewin1.exe 96 PID 3068 wrote to memory of 1916 3068 updatewin1.exe 96 PID 3068 wrote to memory of 1916 3068 updatewin1.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe"C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:744 -
C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe"C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2376 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\d6fc4eda-b46f-4e4e-936c-1b3f9fdfde9d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1356
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C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe"C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2148 -
C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe"C:\Users\Admin\AppData\Local\Temp\9df2a0977fde90af161aaf7a14457c14.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2580 -
C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\updatewin1.exe"C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\updatewin1.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1372 -
C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\updatewin1.exe"C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\updatewin1.exe" --Admin6⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3068 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned7⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2616
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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}"7⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740 -
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.ps18⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2320
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C:\Program Files\Windows Defender\mpcmdrun.exe"C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all7⤵
- Deletes Windows Defender Definitions
PID:2384
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""7⤵PID:1916
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C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\updatewin2.exe"C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\updatewin2.exe"5⤵
- Drops file in Drivers directory
- Executes dropped EXE
PID:1752
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C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\5.exe"C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\5.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:960 -
C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\5.exe"C:\Users\Admin\AppData\Local\72bd371f-f2bb-4337-8d0f-66597ac2e70f\5.exe"6⤵
- Executes dropped EXE
PID:1492 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 11447⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2560
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