Analysis
- max time kernel
64s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
01/10/2022, 07:21
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
General
- Target file.exe
- Size 663KB
- Sample221001-h6pc3sgfcq
- SHA256 d1d7d27400596c40ac43929941bebec1e54541b6e28afdd0b8fd9e0ed384a6a5
- MD5 29d64d3e9db924497506f435cf19c98e
- SHA1 c41bf3853562b821457c7db0460885e4c9831f35
- SHA512 f86c7ee4ce7e011d294a76dcfe515ba8c9767cf0caff4d3dd10e5b527d6ba9aa22ef2fd70f14ccc45cd53e4d73a546845e2882cc7a899b26a37436f65ec234a9
- SSDEEP 12288:IOsqLJd7plwlI7SuJwuJjyzymhHMnwucvRgouMySfbI8TR+db1L8khe1rZHo:IOsqLj7AGNGQLCHhfNxb5cLRcno
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
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djvu
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http://winnlinne.com/test3/get.php
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extension
.ofoq
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offline_id
xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1
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payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
-
ransomnote
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Extracted
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vidar
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54.7
-
517
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https://t.me/trampapanam
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https://nerdculture.de/@yoxhyp
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profile_id
517
Signatures
- Detected Djvu ransomware 9 IoCs
resource yara_rule behavioral2/memory/4920-133-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4376-136-0x0000000002560000-0x000000000267B000-memory.dmp family_djvu behavioral2/memory/4920-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4920-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4920-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4920-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2612-146-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2612-145-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2612-148-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu - Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Downloads MZ/PE file
- Executes dropped EXE 4 IoCs
pid Process 4204 build2.exe 3232 build3.exe 3548 build2.exe 2500 mstsca.exe - Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation build2.exe Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.exe - Loads dropped DLL 2 IoCs
pid Process 3548 build2.exe 3548 build2.exe - Modifies file permissions 1 TTPs 1 IoCs
pid Process 5016 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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f61b40ed-09ee-4db6-99ce-99668164dc92\\file.exe\" --AutoStart" file.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 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 9 api.2ip.ua 10 api.2ip.ua - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4376 set thread context of 4920 4376 file.exe 84 PID 3876 set thread context of 2612 3876 file.exe 91 PID 4204 set thread context of 3548 4204 build2.exe 100 - 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 - Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1444 schtasks.exe 2704 schtasks.exe - Delays execution with timeout.exe 1 IoCs
pid Process 1476 timeout.exe - Kills process with taskkill 1 IoCs
pid Process 4156 taskkill.exe - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4920 file.exe 4920 file.exe 2612 file.exe 2612 file.exe 3548 build2.exe 3548 build2.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4156 taskkill.exe - Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4376 wrote to memory of 4920 4376 file.exe 84 PID 4920 wrote to memory of 5016 4920 file.exe 85 PID 4920 wrote to memory of 5016 4920 file.exe 85 PID 4920 wrote to memory of 5016 4920 file.exe 85 PID 4920 wrote to memory of 3876 4920 file.exe 88 PID 4920 wrote to memory of 3876 4920 file.exe 88 PID 4920 wrote to memory of 3876 4920 file.exe 88 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 3876 wrote to memory of 2612 3876 file.exe 91 PID 2612 wrote to memory of 4204 2612 file.exe 96 PID 2612 wrote to memory of 4204 2612 file.exe 96 PID 2612 wrote to memory of 4204 2612 file.exe 96 PID 2612 wrote to memory of 3232 2612 file.exe 97 PID 2612 wrote to memory of 3232 2612 file.exe 97 PID 2612 wrote to memory of 3232 2612 file.exe 97 PID 3232 wrote to memory of 1444 3232 build3.exe 98 PID 3232 wrote to memory of 1444 3232 build3.exe 98 PID 3232 wrote to memory of 1444 3232 build3.exe 98 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 4204 wrote to memory of 3548 4204 build2.exe 100 PID 3548 wrote to memory of 3620 3548 build2.exe 101 PID 3548 wrote to memory of 3620 3548 build2.exe 101 PID 3548 wrote to memory of 3620 3548 build2.exe 101 PID 3620 wrote to memory of 4156 3620 cmd.exe 103 PID 3620 wrote to memory of 4156 3620 cmd.exe 103 PID 3620 wrote to memory of 4156 3620 cmd.exe 103 PID 3620 wrote to memory of 1476 3620 cmd.exe 104 PID 3620 wrote to memory of 1476 3620 cmd.exe 104 PID 3620 wrote to memory of 1476 3620 cmd.exe 104 PID 2500 wrote to memory of 2704 2500 mstsca.exe 106 PID 2500 wrote to memory of 2704 2500 mstsca.exe 106 PID 2500 wrote to memory of 2704 2500 mstsca.exe 106
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4376 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4920 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f61b40ed-09ee-4db6-99ce-99668164dc92" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:5016
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3876 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe"C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4204 -
C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe"C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe"6⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3548 -
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\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe" & del C:\PrograData\*.dll & exit7⤵
- Suspicious use of WriteProcessMemory
PID:3620 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im build2.exe /f8⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4156
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C:\Windows\SysWOW64\timeout.exetimeout /t 68⤵
- Delays execution with timeout.exe
PID:1476
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C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build3.exe"C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
PID:1444
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2500 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
PID:2704
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\ProgramData\mozglue.dll
- Size 593KB
- SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
- MD5 c8fd9be83bc728cc04beffafc2907fe9
- SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
- SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
- SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
- MD5 SHA1 SHA512 SSDEEP
- Path C:\ProgramData\nss3.dll
- Size 2.0MB
- SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
- MD5 1cc453cdf74f31e4d913ff9c10acdde2
- SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
- SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
- SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe
- Size 418KB
- SHA256 06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169
- MD5 bc47d3a0d4a74adc40b3a7035344becb
- SHA1 dd80bbe70106b62ea58924173a364cc936a0b1f4
- SHA512 4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4
- SSDEEP 6144:1Lx9XanRM1SjoQv9t7Orj6LhkXh9bPWCswFVMepIT5xTI0aMnlGGjL3enigabwVf:1LHqWQoQv9NIKk7KFUVgT/RaMnIZi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe
- Size 418KB
- SHA256 06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169
- MD5 bc47d3a0d4a74adc40b3a7035344becb
- SHA1 dd80bbe70106b62ea58924173a364cc936a0b1f4
- SHA512 4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4
- SSDEEP 6144:1Lx9XanRM1SjoQv9t7Orj6LhkXh9bPWCswFVMepIT5xTI0aMnlGGjL3enigabwVf:1LHqWQoQv9NIKk7KFUVgT/RaMnIZi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build2.exe
- Size 418KB
- SHA256 06d1366df3628a010416384f7c77c493ac35f13ee05e010751708d681ebe5169
- MD5 bc47d3a0d4a74adc40b3a7035344becb
- SHA1 dd80bbe70106b62ea58924173a364cc936a0b1f4
- SHA512 4a4ef35c5fcbfc5a6b86dd6235f8b1b4f048ee5b5bd74fd9173a65cd450ec0f58fcf74f5fd2e58dd5dee486c0e41c2523cd6d7528d56fc2627fbdf8b598a29e4
- SSDEEP 6144:1Lx9XanRM1SjoQv9t7Orj6LhkXh9bPWCswFVMepIT5xTI0aMnlGGjL3enigabwVf:1LHqWQoQv9NIKk7KFUVgT/RaMnIZi
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build3.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\274ce6a1-b1c2-464a-9399-c2a1e7d001b1\build3.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\f61b40ed-09ee-4db6-99ce-99668164dc92\file.exe
- Size 663KB
- SHA256 d1d7d27400596c40ac43929941bebec1e54541b6e28afdd0b8fd9e0ed384a6a5
- MD5 29d64d3e9db924497506f435cf19c98e
- SHA1 c41bf3853562b821457c7db0460885e4c9831f35
- SHA512 f86c7ee4ce7e011d294a76dcfe515ba8c9767cf0caff4d3dd10e5b527d6ba9aa22ef2fd70f14ccc45cd53e4d73a546845e2882cc7a899b26a37436f65ec234a9
- SSDEEP 12288:IOsqLJd7plwlI7SuJwuJjyzymhHMnwucvRgouMySfbI8TR+db1L8khe1rZHo:IOsqLj7AGNGQLCHhfNxb5cLRcno
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
- Size 9KB
- SHA256 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
- MD5 9ead10c08e72ae41921191f8db39bc16
- SHA1 abe3bce01cd34afc88e2c838173f8c2bd0090ae1
- SHA512 aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
- SSDEEP 192:9UEc8b6H1LE+4LoGgMatAJ2lzUw317NyEpvNHhqyo:9UUE1BYoGza/D3170kiyo
- MD5 SHA1 SHA512 SSDEEP