Analysis Overview
SHA256
160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd
Threat Level: Known bad
The file 160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd was found to be: Known bad.
Malicious Activity Summary
Vidar
Djvu Ransomware
Detected Djvu ransomware
Downloads MZ/PE file
Modifies file permissions
Reads user/profile data of web browsers
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Accesses cryptocurrency files/wallets, possible credential harvesting
Looks up external IP address via web service
Checks installed software on the system
Accesses 2FA software files, possible credential harvesting
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Delays execution with timeout.exe
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-03-31 16:16
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-31 16:16
Reported
2023-03-31 16:19
Platform
win10v2004-20230220-en
Max time kernel
151s
Max time network
171s
Command Line
Signatures
Detected Djvu ransomware
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Djvu Ransomware
Vidar
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Reads user/profile data of web browsers
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\21fed643-960f-4015-b36e-c47925bbd4a2\\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe | N/A |
Checks installed software on the system
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4292 set thread context of 4720 | N/A | C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe | C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe |
| PID 3040 set thread context of 228 | N/A | C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe | C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe |
| PID 2424 set thread context of 4076 | N/A | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe
"C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe"
C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe
"C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\21fed643-960f-4015-b36e-c47925bbd4a2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe
"C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe
"C:\Users\Admin\AppData\Local\Temp\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe
"C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe"
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe
"C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe"
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build3.exe
"C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build3.exe"
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"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 6
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
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"
Network
| Country | Destination | Domain | Proto |
| US | 52.152.110.14:443 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 254.217.0.162.in-addr.arpa | udp |
| US | 152.195.38.76:80 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| US | 8.8.8.8:53 | crl.comodoca.com | udp |
| US | 172.64.155.188:80 | crl.comodoca.com | tcp |
| US | 172.64.155.188:80 | crl.comodoca.com | tcp |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | 142.145.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 188.155.64.172.in-addr.arpa | udp |
| US | 52.152.110.14:443 | tcp | |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 63.13.109.52.in-addr.arpa | udp |
| US | 52.152.110.14:443 | tcp | |
| US | 8.8.8.8:53 | uaery.top | udp |
| US | 8.8.8.8:53 | zexeq.com | udp |
| MX | 187.212.236.255:80 | zexeq.com | tcp |
| AR | 190.229.19.7:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 255.236.212.187.in-addr.arpa | udp |
| AR | 190.229.19.7:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 7.19.229.190.in-addr.arpa | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | 143.145.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 204.79.197.203:80 | tcp | |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| US | 8.8.8.8:53 | 99.167.154.149.in-addr.arpa | udp |
| US | 52.152.110.14:443 | tcp | |
| DE | 78.47.168.170:80 | 78.47.168.170 | tcp |
| US | 8.8.8.8:53 | 36.249.124.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 170.168.47.78.in-addr.arpa | udp |
| KR | 123.140.161.243:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 243.161.140.123.in-addr.arpa | udp |
| US | 52.152.110.14:443 | tcp | |
| US | 52.152.110.14:443 | tcp | |
| US | 52.152.110.14:443 | tcp |
Files
memory/4292-134-0x00000000023C0000-0x00000000024DB000-memory.dmp
memory/4720-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4720-147-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\21fed643-960f-4015-b36e-c47925bbd4a2\160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd.exe
| MD5 | 4e9471c76b0e6a9cece6b1247a9d765b |
| SHA1 | 11a90d3b8733f3f43d14352401bea960f9fc5aa5 |
| SHA256 | 160d1b9fef370623ae3f833b3ffd064e9a856c3f4a73aa06d1e8be792e4b35cd |
| SHA512 | 5d80efc8f5fb6cd5b6458f8ac173f01326671c65472cb5aed97b632ea2844c85a5c16c2db5b6a991c3af10d0767da51dc7a7d3b06907dd1d80163e9a9b2ae3b8 |
memory/4720-150-0x0000000000400000-0x0000000000537000-memory.dmp
memory/228-154-0x0000000000400000-0x0000000000537000-memory.dmp
memory/228-155-0x0000000000400000-0x0000000000537000-memory.dmp
memory/228-156-0x0000000000400000-0x0000000000537000-memory.dmp
memory/228-159-0x0000000000400000-0x0000000000537000-memory.dmp
memory/228-160-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
memory/4076-172-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
memory/2424-175-0x0000000002D20000-0x0000000002D77000-memory.dmp
memory/4076-176-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4076-174-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4076-177-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/228-186-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\5416ba83-c128-45af-a7c7-2052d05ffdd9\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4076-191-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4076-202-0x0000000061E00000-0x0000000061EF3000-memory.dmp
C:\ProgramData\nss3.dll
| MD5 | 1cc453cdf74f31e4d913ff9c10acdde2 |
| SHA1 | 6e85eae544d6e965f15fa5c39700fa7202f3aafe |
| SHA256 | ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5 |
| SHA512 | dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571 |
C:\ProgramData\mozglue.dll
| MD5 | c8fd9be83bc728cc04beffafc2907fe9 |
| SHA1 | 95ab9f701e0024cedfbd312bcfe4e726744c4f2e |
| SHA256 | ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a |
| SHA512 | fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040 |
memory/228-235-0x0000000000400000-0x0000000000537000-memory.dmp
memory/228-239-0x0000000000400000-0x0000000000537000-memory.dmp
memory/228-243-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4076-277-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4076-278-0x0000000000400000-0x000000000046C000-memory.dmp
memory/228-279-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4076-280-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4076-281-0x0000000000400000-0x000000000046C000-memory.dmp
memory/228-283-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |