Analysis Overview
SHA256
ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7
Threat Level: Known bad
The file ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7 was found to be: Known bad.
Malicious Activity Summary
Vidar
Djvu Ransomware
Detected Djvu ransomware
Downloads MZ/PE file
Executes dropped EXE
Reads user/profile data of web browsers
Modifies file permissions
Loads dropped DLL
Checks installed software on the system
Looks up external IP address via web service
Accesses cryptocurrency files/wallets, possible credential harvesting
Accesses 2FA software files, possible credential harvesting
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
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 02:42
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-31 02:42
Reported
2023-03-31 02:44
Platform
win10-20230220-en
Max time kernel
147s
Max time network
128s
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\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\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\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\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-1-5-21-640001698-3754512395-3275565439-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\80709a76-5954-41f1-9cd1-997204238cd6\\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.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 2580 set thread context of 4040 | N/A | C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe | C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe |
| PID 1392 set thread context of 4108 | N/A | C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe | C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe |
| PID 1308 set thread context of 3720 | N/A | C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe | C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\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\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\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\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe
"C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe"
C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe
"C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\80709a76-5954-41f1-9cd1-997204238cd6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe
"C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe
"C:\Users\Admin\AppData\Local\Temp\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe
"C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe"
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe
"C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe"
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build3.exe
"C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\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\6a1ffeea-322c-44f5-8827-a9f332b10301\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 | udp | |
| US | 8.8.8.8:53 | 240.232.18.117.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.18.104.in-addr.arpa | udp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | uaery.top | udp |
| KR | 211.171.233.126:80 | uaery.top | tcp |
| US | 8.8.8.8:53 | zexeq.com | udp |
| MX | 187.170.146.118:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 126.233.171.211.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 118.146.170.187.in-addr.arpa | udp |
| MX | 187.170.146.118:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 116.202.185.202:80 | 116.202.185.202 | tcp |
| US | 8.8.8.8:53 | 99.167.154.149.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.249.124.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 202.185.202.116.in-addr.arpa | udp |
| US | 20.189.173.12:443 | tcp | |
| US | 8.8.8.8:53 | 62.13.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 126.110.238.8.in-addr.arpa | udp |
Files
memory/2580-122-0x0000000004A60000-0x0000000004B7B000-memory.dmp
memory/4040-123-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4040-124-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4040-125-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4040-126-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\80709a76-5954-41f1-9cd1-997204238cd6\ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7.exe
| MD5 | ffa4ed79b58e2fd7fe321fe41f051f24 |
| SHA1 | 605ec664dda5c7eef06f05f30db4bcb6b5302d5d |
| SHA256 | ba38d473717c342ef04f2204b955c7c2438a24820c8d25d4e3da8c33c6786ba7 |
| SHA512 | 21b53750f8172464a4fa5bc6b97020617aaa657a902fbd600fdbcfe5e073f4368d6cb5d17b192081bc50cb55194b8b24a7ea647ce5f78c773bf90e94dc9a1dfd |
memory/4040-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-141-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-142-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 661bcd91162aae1700821657b08e5bb5 |
| SHA1 | cfec5cc2423311db586505b47a1a8ac5629b4682 |
| SHA256 | 40238481c90b48cbcf8f06d3f7ef5f9eb5a58dde7fbb1c490018b82c735a944a |
| SHA512 | 677b519a1c1668773a1f6e2ebb1374af3a047480812aac8792eb5a461deee2c661a0349ffe30993ac4d86624dbc4ab96b18f12778fb592714df96e245b08801d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | ee7ad9d8f28e0558a94e667206e8a271 |
| SHA1 | b49a079526da92d55f2d1bc66659836c0f90a086 |
| SHA256 | 9eeeef2cbd8192c6586ffa64114ad0c3e8e5ab3a73817e1044895517c6eba712 |
| SHA512 | 0c1596e7b8e54e0cce8139a339c4c34f5f9391ce0b7051673abe7a43f174f292e0d3267b1ce1186247535941b416962b6fe63cb03855ddea254cf09fddad3223 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 07d0b9c4009e574e58cf28fc0a211451 |
| SHA1 | ae969ba0c61f66ae1917a86d6220753d9d1311f9 |
| SHA256 | 5d41188d7503593c896b48e25d07dfc114058d4b2001a0b8888c283665c66b5d |
| SHA512 | 6903082071a225ab6fe5652f46393dad7001b803fd3cab3f924ed1d0d392679066572860292fd5774272e8db07076e7ac2a0b8a57ac4eb7ed3311bb538e34753 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 6a3b8331e801f083b403b0857ed8d574 |
| SHA1 | 48d275731f1dbd0630d1ca55a1b05f149a011d1f |
| SHA256 | 98651a2da4a4613bc2a03c4128926fe6b05f1af8a7a21e1fedec75db013706a0 |
| SHA512 | 7527b8857707c8822e4b7f5049ddc9b4c49933e68535690746d84b7f0187a10f36e874719bdb1bf3ba8b035568a7cbafd687b80c4621dc35552d73f7e497071d |
memory/4108-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-148-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-149-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-153-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-155-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-156-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
memory/4108-164-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3720-166-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
memory/1308-168-0x0000000002CC0000-0x0000000002D17000-memory.dmp
memory/3720-169-0x0000000000400000-0x000000000046C000-memory.dmp
memory/3720-170-0x0000000000400000-0x000000000046C000-memory.dmp
memory/3720-171-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build3.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 |
C:\Users\Admin\AppData\Local\6a1ffeea-322c-44f5-8827-a9f332b10301\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4108-177-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3720-191-0x0000000061E00000-0x0000000061EF3000-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/3720-236-0x0000000000400000-0x000000000046C000-memory.dmp
memory/3720-246-0x0000000000400000-0x000000000046C000-memory.dmp
memory/3720-247-0x0000000000400000-0x000000000046C000-memory.dmp
memory/3720-249-0x0000000000400000-0x000000000046C000-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 |