Analysis Overview
SHA256
d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65
Threat Level: Known bad
The file d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
Vidar
Downloads MZ/PE file
Loads dropped DLL
Executes dropped EXE
Modifies file permissions
Reads user/profile data of web browsers
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
Accesses cryptocurrency files/wallets, possible credential harvesting
Suspicious use of SetThreadContext
Enumerates physical storage devices
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-03-28 00:26
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-28 00:26
Reported
2023-03-28 00:29
Platform
win10-20230220-en
Max time kernel
144s
Max time network
127s
Command Line
Signatures
Detected Djvu ransomware
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Djvu Ransomware
Vidar
Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\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\24617d17-df05-46f8-945c-c9c459762504\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\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-1-5-21-1311743041-1167936498-546579926-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3725744f-6458-4d3f-a4f5-b33060c9a599\\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.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 |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2168 set thread context of 2320 | N/A | C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe | C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe |
| PID 2700 set thread context of 4888 | N/A | C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe | C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe |
| PID 4844 set thread context of 5084 | N/A | C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe | C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\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\24617d17-df05-46f8-945c-c9c459762504\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\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\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe
"C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe"
C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe
"C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\3725744f-6458-4d3f-a4f5-b33060c9a599" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe
"C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe
"C:\Users\Admin\AppData\Local\Temp\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe
"C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe"
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe
"C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe"
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build3.exe
"C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\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\24617d17-df05-46f8-945c-c9c459762504\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 | 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 | 8.8.8.8:53 | 188.155.64.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.3.197.209.in-addr.arpa | udp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | zexeq.com | udp |
| US | 8.8.8.8:53 | uaery.top | udp |
| KR | 175.120.254.9:80 | uaery.top | tcp |
| KR | 123.140.161.243:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 243.161.140.123.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.254.120.175.in-addr.arpa | udp |
| KR | 123.140.161.243:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 116.203.10.236:80 | 116.203.10.236 | tcp |
| US | 8.8.8.8:53 | 99.167.154.149.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.249.124.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 236.10.203.116.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 32.101.122.92.in-addr.arpa | udp |
Files
memory/2320-122-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2320-123-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2168-124-0x00000000025C0000-0x00000000026DB000-memory.dmp
memory/2320-125-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2320-126-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\3725744f-6458-4d3f-a4f5-b33060c9a599\d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65.exe
| MD5 | e4b9d3b6d87b69063a373df93ed0910b |
| SHA1 | 3427971878ec2462e83a4ef47411052d928ae7bf |
| SHA256 | d3eab1bd3327571169d62f828d40ccbc84b7192c9c0d8c0beb83524740eb1b65 |
| SHA512 | 2a36789746bfc55b47a302040a3f0cb7a1770318271548c4fcbd26fa1b75dd3b7dc57d0248ba5e05ebceb1d95ed6e90942bb28e72fa6e2e787988b1ffd9220e8 |
memory/2320-139-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4888-143-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4888-144-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 3adac03b181d7980568dda0da0efc9de |
| SHA1 | a283c4c9bd26a65b8240d21708e57f5946778341 |
| SHA256 | 24c4973ced938b77d9670ac79eb76cd52411b17ab59ec78ba14c1b433f342933 |
| SHA512 | 6fbd2a32fc18606628ea56311764cd879a1196405dddd4d269ad6163b2ffdcf916786f1c0328f27ec089be5cb9b4ecb3542363f4dfb3df1c1b91a0e038b67241 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | e5b1cc0ae5af6a8277d75cff4af2c5e8 |
| SHA1 | 4768fff3d4bbe02f89683b4a0e7b15b24b54eb9f |
| SHA256 | d950c0d748aae641d71b11cd1c519b289917c23bee1a2b6bc5c496fd8e5d4655 |
| SHA512 | 57a4737deeefac0124d73b52525993fecbbebd21a556ece87f8e79e845e07f037abb5e49f7458e8a010935c6691f18fbb913d77ecfb2ba902067788c483ec3d7 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | ea4750140d8c7c8f3d359f0691f57ab2 |
| SHA1 | d6dbdf97973a418d3a24c7f2ddda5719b9f07e55 |
| SHA256 | cf2cd368eac1c272a5cb626a9a973aa839c97e45d992ec4fa7494d6f93ae5af1 |
| SHA512 | fbd4b1099a7db607f1ed8005cdcb2cf1a89adef5d33dac4d6bee2dae1289ff4637dd8e55ea726d04dd842867e150a58695ea7b859219897400457b46d048949f |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 02f800b5145522d27c383d8dff1a1669 |
| SHA1 | 331f5dcf5ca495871900b8b555a0fc8f0bc9c9d4 |
| SHA256 | 1ce8ecd03357f1e3d2e86f51dd8f492c80e64e467858ec52d12c236438b2af6e |
| SHA512 | 59e1b5293546ac857cac71bcfda1732eb63693de2d1a5a2673b380717d9d267280886ee1c1987236c123b8e22080a0b845ae07c621188cda04c785113cd278b5 |
memory/4888-151-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4888-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4888-153-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4888-157-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4888-160-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4888-159-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe
| MD5 | 6b343cd7dea3ae28d0819bc55a2f86fe |
| SHA1 | cedd49849a5dd678d0a55da607e9b28a9680073c |
| SHA256 | 4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49 |
| SHA512 | 7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48 |
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe
| MD5 | 6b343cd7dea3ae28d0819bc55a2f86fe |
| SHA1 | cedd49849a5dd678d0a55da607e9b28a9680073c |
| SHA256 | 4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49 |
| SHA512 | 7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48 |
memory/4888-168-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5084-170-0x0000000000400000-0x000000000046C000-memory.dmp
memory/5084-172-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build2.exe
| MD5 | 6b343cd7dea3ae28d0819bc55a2f86fe |
| SHA1 | cedd49849a5dd678d0a55da607e9b28a9680073c |
| SHA256 | 4240b655ed2af5ae8873b49e2e2d204383b2fd675c21f02527a9a4d9b719cd49 |
| SHA512 | 7c28ba260fe53879b6e8f69d65c4263d454d75033889162d000c421695e634aeb13f4d4c2b999934f8eb2e58d62913764f1590689925e120600155d8390d0a48 |
memory/4844-174-0x0000000002110000-0x0000000002167000-memory.dmp
memory/5084-173-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\24617d17-df05-46f8-945c-c9c459762504\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4888-180-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5084-184-0x0000000000400000-0x000000000046C000-memory.dmp
memory/5084-195-0x0000000061E00000-0x0000000061EF3000-memory.dmp
\ProgramData\nss3.dll
| MD5 | 1cc453cdf74f31e4d913ff9c10acdde2 |
| SHA1 | 6e85eae544d6e965f15fa5c39700fa7202f3aafe |
| SHA256 | ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5 |
| SHA512 | dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571 |
\ProgramData\mozglue.dll
| MD5 | c8fd9be83bc728cc04beffafc2907fe9 |
| SHA1 | 95ab9f701e0024cedfbd312bcfe4e726744c4f2e |
| SHA256 | ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a |
| SHA512 | fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040 |
memory/5084-240-0x0000000000400000-0x000000000046C000-memory.dmp
memory/5084-251-0x0000000000400000-0x000000000046C000-memory.dmp
memory/5084-253-0x0000000000400000-0x000000000046C000-memory.dmp
memory/5084-254-0x0000000000400000-0x000000000046C000-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 |