Analysis
- max time kernel
120s - max time network
128s - platform
windows10_x64 - resource
win10v20210410 - submitted
01/06/2021, 06:06
Static task
static1
Behavioral task
behavioral1
Sample
7cfc44ba1c64254ae98ee93a9d29afd6.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
7cfc44ba1c64254ae98ee93a9d29afd6.exe
Resource
win10v20210410
General
- Target 7cfc44ba1c64254ae98ee93a9d29afd6.exe
- Size 845KB
- Sample210601-xqmaeahgve
- SHA256 cf98b1f7e33156c7ed25ba1e303e76dea6bfc3141cedebeb19656e36d7e5e8d9
- MD5 7cfc44ba1c64254ae98ee93a9d29afd6
- SHA1 d5e37db0c951044c0397536a5292d8fb4f597358
- SHA512 dda2ef8a63995f8d2738a9e9efc20ccc40a37609838a096f12d1d4d752c66086a2bc43692a9cda2b78a818152502890b8d5d708ba4156584fa236becce052173
- MD5 SHA1 SHA512
Malware Config
Extracted
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vidar
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38.9
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517
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https://HAL9THapi.faceit.compavel23puef
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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 2304 mpcmdrun.exe - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Vidar Stealer 5 IoCs
resource yara_rule behavioral2/memory/396-159-0x0000000000400000-0x000000000049B000-memory.dmp family_vidar behavioral2/memory/396-160-0x00000000004688DD-mapping.dmp family_vidar behavioral2/memory/2748-162-0x0000000002180000-0x0000000002218000-memory.dmp family_vidar behavioral2/memory/396-163-0x0000000000400000-0x000000000049B000-memory.dmp family_vidar behavioral2/memory/3712-213-0x0000000002D50000-0x0000000002E9A000-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 2580 updatewin1.exe 1372 updatewin2.exe 820 updatewin1.exe 2748 5.exe 396 5.exe - Loads dropped DLL 2 IoCs
pid Process 396 5.exe 396 5.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 4088 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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d7c5e605-5a32-48c6-894d-47918b719fa1\\7cfc44ba1c64254ae98ee93a9d29afd6.exe\" --AutoStart" 7cfc44ba1c64254ae98ee93a9d29afd6.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 21 api.2ip.ua 11 api.2ip.ua 12 api.2ip.ua - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1892 set thread context of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 4072 set thread context of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 2748 set thread context of 396 2748 5.exe 90 - 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 5.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 5.exe - Delays execution with timeout.exe 1 IoCs
pid Process 1224 timeout.exe - Kills process with taskkill 1 IoCs
pid Process 3576 taskkill.exe -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 7cfc44ba1c64254ae98ee93a9d29afd6.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 7cfc44ba1c64254ae98ee93a9d29afd6.exe - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 3712 powershell.exe 3712 powershell.exe 3712 powershell.exe 396 5.exe 396 5.exe 396 5.exe 396 5.exe 396 5.exe 396 5.exe 3712 powershell.exe 2204 powershell.exe 2204 powershell.exe 396 5.exe 396 5.exe 2204 powershell.exe 780 powershell.exe 780 powershell.exe 780 powershell.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3712 powershell.exe Token: SeDebugPrivilege 2204 powershell.exe Token: SeDebugPrivilege 780 powershell.exe Token: SeDebugPrivilege 3576 taskkill.exe - Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 1892 wrote to memory of 2088 1892 7cfc44ba1c64254ae98ee93a9d29afd6.exe 78 PID 2088 wrote to memory of 4088 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 79 PID 2088 wrote to memory of 4088 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 79 PID 2088 wrote to memory of 4088 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 79 PID 2088 wrote to memory of 4072 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 80 PID 2088 wrote to memory of 4072 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 80 PID 2088 wrote to memory of 4072 2088 7cfc44ba1c64254ae98ee93a9d29afd6.exe 80 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 4072 wrote to memory of 192 4072 7cfc44ba1c64254ae98ee93a9d29afd6.exe 83 PID 192 wrote to memory of 2580 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 84 PID 192 wrote to memory of 2580 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 84 PID 192 wrote to memory of 2580 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 84 PID 192 wrote to memory of 1372 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 85 PID 192 wrote to memory of 1372 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 85 PID 192 wrote to memory of 1372 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 85 PID 2580 wrote to memory of 820 2580 updatewin1.exe 86 PID 2580 wrote to memory of 820 2580 updatewin1.exe 86 PID 2580 wrote to memory of 820 2580 updatewin1.exe 86 PID 192 wrote to memory of 2748 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 87 PID 192 wrote to memory of 2748 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 87 PID 192 wrote to memory of 2748 192 7cfc44ba1c64254ae98ee93a9d29afd6.exe 87 PID 820 wrote to memory of 3712 820 updatewin1.exe 88 PID 820 wrote to memory of 3712 820 updatewin1.exe 88 PID 820 wrote to memory of 3712 820 updatewin1.exe 88 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 2748 wrote to memory of 396 2748 5.exe 90 PID 820 wrote to memory of 2204 820 updatewin1.exe 91 PID 820 wrote to memory of 2204 820 updatewin1.exe 91 PID 820 wrote to memory of 2204 820 updatewin1.exe 91 PID 2204 wrote to memory of 780 2204 powershell.exe 93 PID 2204 wrote to memory of 780 2204 powershell.exe 93 PID 2204 wrote to memory of 780 2204 powershell.exe 93 PID 820 wrote to memory of 2304 820 updatewin1.exe 95 PID 820 wrote to memory of 2304 820 updatewin1.exe 95 PID 820 wrote to memory of 3184 820 updatewin1.exe 97 PID 820 wrote to memory of 3184 820 updatewin1.exe 97 PID 820 wrote to memory of 3184 820 updatewin1.exe 97 PID 396 wrote to memory of 804 396 5.exe 99 PID 396 wrote to memory of 804 396 5.exe 99 PID 396 wrote to memory of 804 396 5.exe 99 PID 804 wrote to memory of 3576 804 cmd.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe"C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1892 -
C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe"C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\d7c5e605-5a32-48c6-894d-47918b719fa1" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4088
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C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe"C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4072 -
C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe"C:\Users\Admin\AppData\Local\Temp\7cfc44ba1c64254ae98ee93a9d29afd6.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:192 -
C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\updatewin1.exe"C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\updatewin1.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2580 -
C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\updatewin1.exe"C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\updatewin1.exe" --Admin6⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:820 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned7⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3712
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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:2204 -
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:780
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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:2304
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""7⤵PID:3184
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C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\updatewin2.exe"C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\updatewin2.exe"5⤵
- Drops file in Drivers directory
- Executes dropped EXE
PID:1372
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C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\5.exe"C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\5.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2748 -
C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\5.exe"C:\Users\Admin\AppData\Local\6d5e903a-ed1f-4388-abd4-b8aedbe36257\5.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:396 -
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\6d5e903a-ed1f-4388-abd4-b8aedbe36257\5.exe" & del C:\ProgramData\*.dll & exit7⤵
- Suspicious use of WriteProcessMemory
PID:804 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im 5.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3576
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:1224
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