Analysis
- max time kernel
143s - max time network
155s - platform
windows10_x64 - resource
win10v20210410 - submitted
06/07/2021, 06:21
Static task
static1
Behavioral task
behavioral1
Sample
7af67758fb6927cdcbafac6523afccd2.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
7af67758fb6927cdcbafac6523afccd2.exe
Resource
win10v20210410
General
- Target 7af67758fb6927cdcbafac6523afccd2.exe
- Size 761KB
- Sample210706-e132r1tjbe
- SHA256 d0da8d292459d68df7dbbd65379e80e970b79f93307f05aca7b95e967ad86d52
- MD5 7af67758fb6927cdcbafac6523afccd2
- SHA1 2fa119c38c0a4971796b8205241e8f81c8e2f9cd
- SHA512 c3be0549e8e1eedd7e8576da2ffaa0da023f3ace525413531cac8b2faea6c83eeb9bc656bde852048c2d0cf96c302b6a36d5138bcaa5d5ef59025285e897a0bc
- MD5 SHA1 SHA512
Malware Config
Extracted
-
C:\_readme.txt
- ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-fhnNOAYC8Z Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0312ewgfDdOcMcAt2OQZqFzJadYhow9MqoFd992adkvAnhUo2b
-
https://we.tl/t-fhnNOAYC8Z
Extracted
-
vidar
-
39.4
-
517
-
https://sergeevih43.tumblr.com
-
profile_id
517
Signatures
- Vidar Stealer 4 IoCs
resource yara_rule behavioral2/memory/1936-132-0x0000000000400000-0x00000000004A1000-memory.dmp family_vidar behavioral2/memory/1936-133-0x000000000046B76D-mapping.dmp family_vidar behavioral2/memory/3872-135-0x00000000005B0000-0x000000000065E000-memory.dmp family_vidar behavioral2/memory/1936-136-0x0000000000400000-0x00000000004A1000-memory.dmp family_vidar - Downloads MZ/PE file
- Executes dropped EXE 4 IoCs
pid Process 3872 build2.exe 1936 build2.exe 3544 7af67758fb6927cdcbafac6523afccd2.exe 3988 7af67758fb6927cdcbafac6523afccd2.exe - Modifies extensions of user files 11 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\AssertBlock.tiff 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\AssertBlock.tiff => C:\Users\Admin\Pictures\AssertBlock.tiff.zqqw 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\FindShow.tiff => C:\Users\Admin\Pictures\FindShow.tiff.zqqw 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\StopUndo.raw => C:\Users\Admin\Pictures\StopUndo.raw.zqqw 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\SwitchSkip.raw => C:\Users\Admin\Pictures\SwitchSkip.raw.zqqw 7af67758fb6927cdcbafac6523afccd2.exe File opened for modification C:\Users\Admin\Pictures\FindShow.tiff 7af67758fb6927cdcbafac6523afccd2.exe File opened for modification C:\Users\Admin\Pictures\OptimizeReset.tiff 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\OptimizeReset.tiff => C:\Users\Admin\Pictures\OptimizeReset.tiff.zqqw 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\PopInstall.crw => C:\Users\Admin\Pictures\PopInstall.crw.zqqw 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\ReceiveReset.raw => C:\Users\Admin\Pictures\ReceiveReset.raw.zqqw 7af67758fb6927cdcbafac6523afccd2.exe File renamed C:\Users\Admin\Pictures\WatchUnprotect.png => C:\Users\Admin\Pictures\WatchUnprotect.png.zqqw 7af67758fb6927cdcbafac6523afccd2.exe - Loads dropped DLL 2 IoCs
pid Process 1936 build2.exe 1936 build2.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 2464 icacls.exe - 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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2a4561a2-9357-4f7c-9d0b-33be0397c490\\7af67758fb6927cdcbafac6523afccd2.exe\" --AutoStart" 7af67758fb6927cdcbafac6523afccd2.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 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 8 api.2ip.ua 9 api.2ip.ua 18 api.2ip.ua 35 api.2ip.ua - Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 1696 set thread context of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 2604 set thread context of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 3872 set thread context of 1936 3872 build2.exe 85 PID 3544 set thread context of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 - 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 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 build2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build2.exe - Delays execution with timeout.exe 1 IoCs
pid Process 2680 timeout.exe - Kills process with taskkill 1 IoCs
pid Process 3868 taskkill.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 7af67758fb6927cdcbafac6523afccd2.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 7af67758fb6927cdcbafac6523afccd2.exe - Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 3536 7af67758fb6927cdcbafac6523afccd2.exe 3536 7af67758fb6927cdcbafac6523afccd2.exe 1176 7af67758fb6927cdcbafac6523afccd2.exe 1176 7af67758fb6927cdcbafac6523afccd2.exe 1936 build2.exe 1936 build2.exe 1936 build2.exe 1936 build2.exe 1936 build2.exe 1936 build2.exe 1936 build2.exe 1936 build2.exe 3988 7af67758fb6927cdcbafac6523afccd2.exe 3988 7af67758fb6927cdcbafac6523afccd2.exe 1176 7af67758fb6927cdcbafac6523afccd2.exe 1176 7af67758fb6927cdcbafac6523afccd2.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3868 taskkill.exe - Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 1696 wrote to memory of 3536 1696 7af67758fb6927cdcbafac6523afccd2.exe 76 PID 3536 wrote to memory of 2464 3536 7af67758fb6927cdcbafac6523afccd2.exe 77 PID 3536 wrote to memory of 2464 3536 7af67758fb6927cdcbafac6523afccd2.exe 77 PID 3536 wrote to memory of 2464 3536 7af67758fb6927cdcbafac6523afccd2.exe 77 PID 3536 wrote to memory of 2604 3536 7af67758fb6927cdcbafac6523afccd2.exe 78 PID 3536 wrote to memory of 2604 3536 7af67758fb6927cdcbafac6523afccd2.exe 78 PID 3536 wrote to memory of 2604 3536 7af67758fb6927cdcbafac6523afccd2.exe 78 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 2604 wrote to memory of 1176 2604 7af67758fb6927cdcbafac6523afccd2.exe 80 PID 1176 wrote to memory of 3872 1176 7af67758fb6927cdcbafac6523afccd2.exe 83 PID 1176 wrote to memory of 3872 1176 7af67758fb6927cdcbafac6523afccd2.exe 83 PID 1176 wrote to memory of 3872 1176 7af67758fb6927cdcbafac6523afccd2.exe 83 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 3872 wrote to memory of 1936 3872 build2.exe 85 PID 1936 wrote to memory of 3332 1936 build2.exe 86 PID 1936 wrote to memory of 3332 1936 build2.exe 86 PID 1936 wrote to memory of 3332 1936 build2.exe 86 PID 3332 wrote to memory of 3868 3332 cmd.exe 88 PID 3332 wrote to memory of 3868 3332 cmd.exe 88 PID 3332 wrote to memory of 3868 3332 cmd.exe 88 PID 3332 wrote to memory of 2680 3332 cmd.exe 89 PID 3332 wrote to memory of 2680 3332 cmd.exe 89 PID 3332 wrote to memory of 2680 3332 cmd.exe 89 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91 PID 3544 wrote to memory of 3988 3544 7af67758fb6927cdcbafac6523afccd2.exe 91
Processes
-
C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe"C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1696 -
C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe"C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3536 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\2a4561a2-9357-4f7c-9d0b-33be0397c490" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2464
-
-
C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe"C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2604 -
C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe"C:\Users\Admin\AppData\Local\Temp\7af67758fb6927cdcbafac6523afccd2.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Modifies extensions of user files
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1176 -
C:\Users\Admin\AppData\Local\abeb46d8-044e-4dfc-bf00-5e570ff3a6c7\build2.exe"C:\Users\Admin\AppData\Local\abeb46d8-044e-4dfc-bf00-5e570ff3a6c7\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3872 -
C:\Users\Admin\AppData\Local\abeb46d8-044e-4dfc-bf00-5e570ff3a6c7\build2.exe"C:\Users\Admin\AppData\Local\abeb46d8-044e-4dfc-bf00-5e570ff3a6c7\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1936 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im build2.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\abeb46d8-044e-4dfc-bf00-5e570ff3a6c7\build2.exe" & del C:\ProgramData\*.dll & exit7⤵
- Suspicious use of WriteProcessMemory
PID:3332 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3868
-
-
C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:2680
-
-
-
-
-
-
-
-
C:\Users\Admin\AppData\Local\2a4561a2-9357-4f7c-9d0b-33be0397c490\7af67758fb6927cdcbafac6523afccd2.exeC:\Users\Admin\AppData\Local\2a4561a2-9357-4f7c-9d0b-33be0397c490\7af67758fb6927cdcbafac6523afccd2.exe --Task1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3544 -
C:\Users\Admin\AppData\Local\2a4561a2-9357-4f7c-9d0b-33be0397c490\7af67758fb6927cdcbafac6523afccd2.exeC:\Users\Admin\AppData\Local\2a4561a2-9357-4f7c-9d0b-33be0397c490\7af67758fb6927cdcbafac6523afccd2.exe --Task2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:3988
-