Analysis Overview
SHA256
5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7
Threat Level: Known bad
The file 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Checks computer location settings
Modifies file permissions
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-16 07:58
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-16 07:58
Reported
2024-04-16 08:01
Platform
win10v2004-20240412-en
Max time kernel
144s
Max time network
113s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b032fdc8-3c7d-4315-b41f-49c7af7877db\\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe | N/A |
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 3844 set thread context of 4380 | N/A | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe |
| PID 4836 set thread context of 1236 | N/A | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b032fdc8-3c7d-4315-b41f-49c7af7877db" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 248.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 132.250.30.184.in-addr.arpa | udp |
| NL | 23.62.61.144:443 | www.bing.com | tcp |
| NL | 23.62.61.144:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 144.61.62.23.in-addr.arpa | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | sajdfue.com | udp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| CL | 152.231.120.59:80 | sdfjhuz.com | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 145.154.100.122.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.120.231.152.in-addr.arpa | udp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.139.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
Files
memory/3844-1-0x0000000000A00000-0x0000000000A9E000-memory.dmp
memory/3844-2-0x0000000002710000-0x000000000282B000-memory.dmp
memory/4380-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4380-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4380-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4380-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\b032fdc8-3c7d-4315-b41f-49c7af7877db\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
| MD5 | e0f4511d749587854a4513380c78c0c1 |
| SHA1 | 11b656344f3e81f3574d8addd348430efcbb8a04 |
| SHA256 | 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7 |
| SHA512 | 53eea41de3d9788e48a3e5be32b322fb81769488cdebcff206a7f0e2500253977e8a3e1feebe087e8dccad05d279661f28fafae36f7eca92a3b02f2b1ff6e48c |
memory/4380-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4836-18-0x0000000000C10000-0x0000000000CA3000-memory.dmp
memory/1236-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 7f8a706187165033cc4df123f3f82ad2 |
| SHA1 | 42b2890d5f9d5e5b4e826c3622282f2cf60b9446 |
| SHA256 | 379fa5169261f064b5b95f578be9035ad2f26ea5e328bf4034dac594e3e37806 |
| SHA512 | b602c3e495aaaf59984f6458997597c1132f5e980f0624b12dcbf361f99441e3d312a1eb3b9978c3fba16fb8eae41d905bfa21e9938eee1d51ffce768d7310b2 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 77fff4010e48018b867bb350fb78b7c2 |
| SHA1 | 31b0dfcc0b92a789cd5c94dbf8d0f5aca820ed31 |
| SHA256 | 3e95094f49fea7951fb5ea5551a8b344c1ec16ddaf4f5da7b6bfe1151afa9ee5 |
| SHA512 | 78a8fc7de1b3cbbc2225790bf55fd64b3c7fa922b4601dcbb1103cc12491da71ebae1eebfaa3a2ce2e0b3b3a7b7229dd448012c23a707f84aae8fe0e996c7e89 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 6879ab3c3b1cc16a7fc8b28bbe3f710c |
| SHA1 | e1463905da5434470e34293f2fbcd4d2642d5f64 |
| SHA256 | f10f930241584c39f5413f9108031f3704f378b0c2cc7caf418bc827c6d67e1d |
| SHA512 | 261e0a8d3b1daf417fe99a1cb30ca6e8cae1fe89742148a9b3a0df6904d3298a29f2afc0d8864bef51d61cdfec1b341f2488c02bf5d11195e5b42d58c6330322 |
memory/1236-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1236-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-16 07:58
Reported
2024-04-16 08:01
Platform
win11-20240412-en
Max time kernel
145s
Max time network
124s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\183fda21-0def-4f14-9099-1a47dd3ecaf8\\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe | N/A |
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 4296 set thread context of 1328 | N/A | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe |
| PID 3892 set thread context of 3416 | N/A | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe | C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\183fda21-0def-4f14-9099-1a47dd3ecaf8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| KR | 61.82.2.134:80 | sdfjhuz.com | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| MO | 122.100.154.145:80 | sajdfue.com | tcp |
| IE | 52.111.236.23:443 | tcp |
Files
memory/4296-1-0x0000000000AA0000-0x0000000000B3B000-memory.dmp
memory/4296-2-0x00000000026F0000-0x000000000280B000-memory.dmp
memory/1328-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1328-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1328-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1328-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\183fda21-0def-4f14-9099-1a47dd3ecaf8\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
| MD5 | e0f4511d749587854a4513380c78c0c1 |
| SHA1 | 11b656344f3e81f3574d8addd348430efcbb8a04 |
| SHA256 | 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7 |
| SHA512 | 53eea41de3d9788e48a3e5be32b322fb81769488cdebcff206a7f0e2500253977e8a3e1feebe087e8dccad05d279661f28fafae36f7eca92a3b02f2b1ff6e48c |
memory/1328-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3892-20-0x0000000000C50000-0x0000000000CE3000-memory.dmp
memory/3416-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-24-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 56f457fcd8ffe1d0dc8d0336b8ef2a9f |
| SHA1 | 71ea5457df3e4054599b0662a4917fee2bd5fa12 |
| SHA256 | 185a5b7063901cc2c1be12c7bfd255eb7bd535b1fc4d6b01edb87ed1a9454c0c |
| SHA512 | 8ee87e1ba32fcfc873df1d4588ebd63a8a0283e31b7e63f43e62e1718bbc5f13383b33ef42f5afcb00c35fc345cee9bd192b3b70e70f27395c9b49e4ce15ed10 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 77fff4010e48018b867bb350fb78b7c2 |
| SHA1 | 31b0dfcc0b92a789cd5c94dbf8d0f5aca820ed31 |
| SHA256 | 3e95094f49fea7951fb5ea5551a8b344c1ec16ddaf4f5da7b6bfe1151afa9ee5 |
| SHA512 | 78a8fc7de1b3cbbc2225790bf55fd64b3c7fa922b4601dcbb1103cc12491da71ebae1eebfaa3a2ce2e0b3b3a7b7229dd448012c23a707f84aae8fe0e996c7e89 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 04c844fa1f8c1e9f829d7ee78f552322 |
| SHA1 | dd938b410fa51321f9de7a50d606b2462982b1f2 |
| SHA256 | 0497e079205722dd2345d0526cf1baaafe5fff4f991ca744048318322b59882d |
| SHA512 | 99d61c54f0cef83af6da590c81f80dd14094747ae50e15fef010059b1d8dd3061ee5742720965ac8e9a7035a539d87e81be31ce624fbe787a091e02e27dfa4fe |
memory/3416-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-39-0x0000000000400000-0x0000000000537000-memory.dmp