Analysis
- max time kernel
145s - max time network
148s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
29/09/2021, 07:50
Static task
static1
Behavioral task
behavioral1
Sample
30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe
Resource
win7-en-20210920
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe
Resource
win10-en-20210920
windows10_x64
0 signatures
0 seconds
General
- Target 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe
- Size 697KB
- Sample210929-jpac9sebc8
- SHA256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce
- MD5 8108ba038e091b2d315d19652ce576ae
- SHA1 fa27cbc95b3f83589ea82eae8056b841ab960da7
- SHA512 f41ecbbbb0eb92db850487eef4f13cae8eb69d91be5f83aabf0725df87aee2888722ea40fe611685f915014ec513f6dd2a7ab84d95e9164e44e2055a84f92619
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Detected Djvu ransomware 6 IoCs
resource yara_rule behavioral1/memory/1256-55-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/1256-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1324-57-0x0000000001E80000-0x0000000001F9B000-memory.dmp family_djvu behavioral1/memory/1256-58-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/540-63-0x0000000000424141-mapping.dmp family_djvu behavioral1/memory/540-65-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Modifies file permissions 1 TTPs 1 IoCs
pid Process 796 icacls.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cca0ad41-8907-4ceb-9a74-caca8c8c6cba\\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe\" --AutoStart" 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe - Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 3 api.2ip.ua 4 api.2ip.ua - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1324 set thread context of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1328 set thread context of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 540 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 540 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe - Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1324 wrote to memory of 1256 1324 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 27 PID 1256 wrote to memory of 796 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 30 PID 1256 wrote to memory of 796 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 30 PID 1256 wrote to memory of 796 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 30 PID 1256 wrote to memory of 796 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 30 PID 1256 wrote to memory of 1328 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 31 PID 1256 wrote to memory of 1328 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 31 PID 1256 wrote to memory of 1328 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 31 PID 1256 wrote to memory of 1328 1256 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 31 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32 PID 1328 wrote to memory of 540 1328 30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe"C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1324 -
C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe"C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe"2⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1256 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\cca0ad41-8907-4ceb-9a74-caca8c8c6cba" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:796
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C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe"C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1328 -
C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe"C:\Users\Admin\AppData\Local\Temp\30fe1a0c497da6babc63705181d30f2912d7b28d987eb3b8a416d768a10095ce.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:540
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