Analysis Overview
SHA256
5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc
Threat Level: Known bad
The file 5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc 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 behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-23 05:03
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-23 05:03
Reported
2024-05-23 05:06
Platform
win10v2004-20240426-en
Max time kernel
142s
Max time network
129s
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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.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-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\30b36a1f-e96f-41de-879f-605784615df8\\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.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 2668 set thread context of 5112 | N/A | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe |
| PID 8 set thread context of 3308 | N/A | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe"
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\30b36a1f-e96f-41de-879f-605784615df8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 149.220.183.52.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 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.169.217.172.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 | cajgtus.com | udp |
| KR | 211.119.84.112:80 | cajgtus.com | tcp |
| AR | 190.220.21.28:80 | sdfjhuz.com | tcp |
| BE | 2.17.107.131:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| KR | 211.119.84.112:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 112.84.119.211.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.21.220.190.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 131.107.17.2.in-addr.arpa | udp |
| BE | 2.17.107.131:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| KR | 211.119.84.112:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| KR | 211.119.84.112:80 | cajgtus.com | tcp |
| KR | 211.119.84.112:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/2668-1-0x0000000002130000-0x00000000021D0000-memory.dmp
memory/2668-2-0x0000000003D20000-0x0000000003E3B000-memory.dmp
memory/5112-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5112-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5112-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5112-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\30b36a1f-e96f-41de-879f-605784615df8\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
| MD5 | 399bb1e98a2ada417527f09080839484 |
| SHA1 | 3d460c78d4bcf996b40ebc6deab57aa2027065f3 |
| SHA256 | 5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc |
| SHA512 | b0727a92616b9cf7b3e9e7352216c78285371d716d2d269d6cabe6648e0aa03bf5a51899635892cd4966aa7d4da2b28862aaba71d45745a5ed384e8aaa87d875 |
memory/5112-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3308-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/8-23-0x0000000000400000-0x0000000002015000-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 | cce96f9552cd9995e98fe862bcf2f0da |
| SHA1 | 80b0234967ae89814cb92c8d8e4ec0b6b6880153 |
| SHA256 | 74e2c0cbc71266eca500f7139db37450ac7365160b02fdfbb5a9e112051b41eb |
| SHA512 | 76492864b71b74b1e45ac1b67c18d2a64b78e88d10c0416accdd29f63a37cb75e39db9b3781471b59089b73b0366476ec135fb87dea534801eab6432b211da1c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 7575c39a544943a68ce6e709c586005a |
| SHA1 | 4874b30bd1d455b28a95c4e21c5aecd1ea043d7a |
| SHA256 | 4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8 |
| SHA512 | abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 032fab8d5d73b9385facfaa339dcc649 |
| SHA1 | 0c988932f173a4082b6295e6d1491d81c37bc8de |
| SHA256 | 843be824fb71277ba3273bcc15a5125701fa3000ae72074d8427388a1316db1e |
| SHA512 | 619126b886ce43fa3a40e9d19fda212f7b7b0318d5ad4975ced520466be96e5b20b4774e43be49659a07734aa31a5d2cf343611de610d774085a8c3300c47ac2 |
memory/3308-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3308-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3308-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3308-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3308-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3308-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/8-37-0x0000000000400000-0x0000000002015000-memory.dmp
memory/3308-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3308-39-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-23 05:03
Reported
2024-05-23 05:06
Platform
win11-20240426-en
Max time kernel
141s
Max time network
123s
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-1-5-21-2994005945-4089876968-1367784197-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6081867b-63ba-47b4-86fb-a0316eb3fc02\\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.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 2128 set thread context of 2024 | N/A | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe |
| PID 5064 set thread context of 2316 | N/A | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe | C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe"
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\6081867b-63ba-47b4-86fb-a0316eb3fc02" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
"C:\Users\Admin\AppData\Local\Temp\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.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 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| MX | 187.204.82.227:80 | cajgtus.com | tcp |
| BA | 31.176.195.237:80 | sdfjhuz.com | tcp |
| MX | 187.204.82.227:80 | cajgtus.com | tcp |
| MO | 122.100.154.145:80 | cajgtus.com | tcp |
| MO | 122.100.154.145:80 | cajgtus.com | tcp |
| MO | 122.100.154.145:80 | cajgtus.com | tcp |
| MO | 122.100.154.145:80 | cajgtus.com | tcp |
| MO | 122.100.154.145:80 | cajgtus.com | tcp |
Files
memory/2128-1-0x00000000023B0000-0x000000000244E000-memory.dmp
memory/2128-2-0x0000000003DF0000-0x0000000003F0B000-memory.dmp
memory/2024-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2024-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2024-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2024-5-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\6081867b-63ba-47b4-86fb-a0316eb3fc02\5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc.exe
| MD5 | 399bb1e98a2ada417527f09080839484 |
| SHA1 | 3d460c78d4bcf996b40ebc6deab57aa2027065f3 |
| SHA256 | 5813583d3199620c8d84ff421d4e194ce7d071d20c6e9415d5e5a497f43f81fc |
| SHA512 | b0727a92616b9cf7b3e9e7352216c78285371d716d2d269d6cabe6648e0aa03bf5a51899635892cd4966aa7d4da2b28862aaba71d45745a5ed384e8aaa87d875 |
memory/2024-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | dc2f1523038a3bc4f627528369a85e50 |
| SHA1 | 393cf2d9b2513e6013492dbe6affc510013d05e5 |
| SHA256 | 6ad3064dba8a29523b7d7c9cb6e9dc7c35e352675eec884bf85d70fa762950ca |
| SHA512 | 7024dec0aaeb1d79b01aa830b8c80830880a6e1e4864e0b89a46144f76e39e68cba4841b4d9c6ed829b7af3f2648fee27d6ee54a71310d88a0591514ab419312 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 7575c39a544943a68ce6e709c586005a |
| SHA1 | 4874b30bd1d455b28a95c4e21c5aecd1ea043d7a |
| SHA256 | 4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8 |
| SHA512 | abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1 |
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 | 05a0af7448af907197789c7a11543bc8 |
| SHA1 | b4334779930186c11439f3873d91dee66a215d67 |
| SHA256 | 4731746873cc218473fa4bc3348606e49dc2ad0fa73832a341fecf096a85d893 |
| SHA512 | 997e1c1cc350e04a8404d644c18cedcc2fbde003e053354758a26d6eb36c34f4e3c0f926ccba3dc289500353b2321c9de912b84461bb79b6bd202ab4cf7f40c8 |
memory/2316-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-39-0x0000000000400000-0x0000000000537000-memory.dmp