Analysis Overview
SHA256
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35
Threat Level: Known bad
The file ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Modifies file permissions
Checks computer location settings
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
2024-05-22 13:08
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-22 13:08
Reported
2024-05-22 13:08
Platform
win7-20240508-en
Max time kernel
15s
Max time network
19s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b55945a7-6775-4daf-bd42-7fd9d261a582\\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.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 1548 set thread context of 2088 | N/A | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe |
| PID 2636 set thread context of 2720 | N/A | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b55945a7-6775-4daf-bd42-7fd9d261a582" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 188.114.97.2:443 | api.2ip.ua | tcp |
| US | 188.114.97.2:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| KR | 123.213.233.131:80 | cajgtus.com | tcp |
| PY | 181.123.219.23:80 | sdfjhuz.com | tcp |
| KR | 123.213.233.131:80 | cajgtus.com | tcp |
| KR | 123.213.233.131:80 | cajgtus.com | tcp |
Files
memory/1548-0-0x0000000000310000-0x00000000003A2000-memory.dmp
memory/1548-4-0x0000000004660000-0x000000000477B000-memory.dmp
memory/2088-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2088-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2088-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2088-8-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-7-0x0000000000400000-0x0000000002D10000-memory.dmp
C:\Users\Admin\AppData\Local\b55945a7-6775-4daf-bd42-7fd9d261a582\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
| MD5 | 3b8a963e6b19ad273243a1a31c8daca5 |
| SHA1 | a1e84e3b6d68892d95427fb0d2602982b0ed3763 |
| SHA256 | ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35 |
| SHA512 | c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561 |
memory/2088-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2636-29-0x00000000002C0000-0x0000000000352000-memory.dmp
memory/2720-32-0x0000000000400000-0x0000000000537000-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 | 34ecab7fabff5f07c01f75cbe1507996 |
| SHA1 | befa0dcddfb027eae4238732560048b490806410 |
| SHA256 | 91f5be14ae2ada5042de965c8b32bc35f5bd20d54ba93a3b3406de03f24823f4 |
| SHA512 | bc99c44b63692fb413a8d7980abb7f522b95979813b6e2782281d34db0ceeed5857fa9741b6cca57f5cea100bb1e0ae3b6e37a820329d258c3137b12a22c8e3d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 6728aea2631b86a76c237508d8ba9b55 |
| SHA1 | 7a670f95cac088313f7558869162fe01c6dc0ec9 |
| SHA256 | e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b |
| SHA512 | 533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 0c754e2ecdd4617b07c18d57425035d3 |
| SHA1 | 0817f345cb800df1857207aa270536ab49b42b74 |
| SHA256 | 75aebf127b9ce0a97e9e75b726a49c651ed6b133ea36f6ba2783af1e0e7e50aa |
| SHA512 | 99438b1bf5d85e8425642cd67a2d782a50ce269fc8f58ee3172700ed022846c0849ce297ee9ac5d61d8e946a33c967d4625730099d6c8528040229467c3808bb |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
| MD5 | f5f048963677452355c91de07524bca3 |
| SHA1 | a36f18d045aa56a4e224fc2dc5317c2d0fdecb82 |
| SHA256 | e62e4fe53936a5f6c57dafa5f3b155d2c89945157feb672760fd2c4b9a11475d |
| SHA512 | 5063def7678883f87059f410853c42630a9b8cfe24c982ca07690eff7d12fbf6416d4dce5095513ed3d87c8fb4944550498ceabe0a3590347488735d5177bba3 |
C:\Users\Admin\AppData\Local\Temp\Cab424E.tmp
| MD5 | 29f65ba8e88c063813cc50a4ea544e93 |
| SHA1 | 05a7040d5c127e68c25d81cc51271ffb8bef3568 |
| SHA256 | 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184 |
| SHA512 | e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa |
memory/2720-46-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2720-45-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2720-47-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 13:08
Reported
2024-05-22 13:11
Platform
win10v2004-20240508-en
Max time kernel
144s
Max time network
137s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\68499224-bfa9-4bbc-8b02-0b1576064855\\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.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 1636 set thread context of 3900 | N/A | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe |
| PID 4972 set thread context of 4604 | N/A | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe | C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\68499224-bfa9-4bbc-8b02-0b1576064855" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 188.114.97.2:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.97.114.188.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 188.114.97.2:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 20.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| KG | 31.192.250.185:80 | cajgtus.com | tcp |
| BG | 84.252.15.104:80 | sdfjhuz.com | tcp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 131.253.33.237:443 | g.bing.com | tcp |
| KG | 31.192.250.185:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 185.250.192.31.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.15.252.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.33.253.131.in-addr.arpa | udp |
| KG | 31.192.250.185:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| KG | 31.192.250.185:80 | cajgtus.com | tcp |
| KG | 31.192.250.185:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.121.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.99.105.20.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 |
Files
memory/1636-1-0x00000000049A0000-0x0000000004A34000-memory.dmp
memory/1636-2-0x0000000004A40000-0x0000000004B5B000-memory.dmp
memory/3900-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3900-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3900-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3900-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\68499224-bfa9-4bbc-8b02-0b1576064855\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
| MD5 | 3b8a963e6b19ad273243a1a31c8daca5 |
| SHA1 | a1e84e3b6d68892d95427fb0d2602982b0ed3763 |
| SHA256 | ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35 |
| SHA512 | c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561 |
memory/3900-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-20-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 6728aea2631b86a76c237508d8ba9b55 |
| SHA1 | 7a670f95cac088313f7558869162fe01c6dc0ec9 |
| SHA256 | e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b |
| SHA512 | 533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 4063b8694df8a8d095b46d14962961b9 |
| SHA1 | 5d57ba2a5e1ea9ae94f6baf39930305c944e68f5 |
| SHA256 | 5d31a3f3561cc0cd707c06cbc04acd2df7f8f57ab7e1586bfcd4652350f4aa30 |
| SHA512 | ebdeea82a092e32ab0f07463dc73dd1f767ffc7cf4a870b2ff8625ae7cbb425e56736bacd1c495008ae2043566c5c5b03bf63b7a22d678e528f066f57ac9b616 |
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 | 8fc9a05dee6a2516c8e885116f79601a |
| SHA1 | f8999eacb02d8cf78d942fc70e0712130150474f |
| SHA256 | f7b7ea4dab4aa7bebe6fe8338942212133a3a3a22be963fd6cba8334fa1858c9 |
| SHA512 | 1c88a4617f1fc2ad461f80bee49ffd949b761e9e63a5f00a2ae5e33e32b41484a03da66044426267b53b39bade3c8a421ce79c4bd493cfadc4bcde19a0f59b6b |
memory/4604-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4604-35-0x0000000000400000-0x0000000000537000-memory.dmp