Analysis Overview
SHA256
519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d
Threat Level: Known bad
The file 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Checks computer location settings
Modifies file permissions
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-23 04:02
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-23 04:02
Reported
2024-05-23 04:04
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
151s
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f7da86e6-519b-4d60-a3df-3f74b07f2ce2\\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.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 2384 set thread context of 1376 | N/A | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe |
| PID 2916 set thread context of 4028 | N/A | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f7da86e6-519b-4d60-a3df-3f74b07f2ce2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3980 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.24.18.2.in-addr.arpa | udp |
| 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 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| MX | 189.178.135.84:80 | cajgtus.com | tcp |
| AR | 186.182.55.44:80 | sdfjhuz.com | tcp |
| MX | 189.178.135.84:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 84.135.178.189.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 44.55.182.186.in-addr.arpa | udp |
| MX | 189.178.135.84:80 | cajgtus.com | tcp |
| MX | 189.178.135.84:80 | cajgtus.com | tcp |
| US | 13.107.246.64:443 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| MX | 189.178.135.84:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 213.143.182.52.in-addr.arpa | udp |
Files
memory/2384-1-0x0000000004A50000-0x0000000004AEB000-memory.dmp
memory/2384-2-0x0000000004AF0000-0x0000000004C0B000-memory.dmp
memory/1376-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1376-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1376-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1376-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\f7da86e6-519b-4d60-a3df-3f74b07f2ce2\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
| MD5 | 07116bba4c9f651cf2c4327698483aa0 |
| SHA1 | 02a9fc8459c6ad451ba571146d5211664b4276d3 |
| SHA256 | 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d |
| SHA512 | d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2 |
memory/1376-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | c07224372d5aba7060427b1689173574 |
| SHA1 | aa502aee050dee951b127975dc9774e2531de630 |
| SHA256 | 17ba0e1ec77a75ee24f256a442652a53567e088958eadc0559ad37a8b98dde88 |
| SHA512 | def024f99fb0affef3a64fb16302a5030b6e3e8e37b94c230167a5db24ce3d99ad7b148b2d3f7ee322b16456dec58666652fbbdb5f42f3b0375a5b00a80036fb |
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\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | c96dd04ad0289c8f45a134b590bd4242 |
| SHA1 | ff0455e334b000fbd24c5310a46e2dd5e448c7bc |
| SHA256 | a3de73f6f4ce1df8bbce835f15c36324dc4dc2c7a4a89e6a444edc4d094092f1 |
| SHA512 | e5d3abd758f8bd3ec0b4f938b7c1c9f5c23a3628dbd2340d0bd6dea12851839df032bc6ec252248d5d232f94042d1e5afa62c41aafb1a22e4bfc9f46c6a52439 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/4028-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4028-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-23 04:02
Reported
2024-05-23 04:04
Platform
win11-20240508-en
Max time kernel
143s
Max time network
125s
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-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\55e7ed03-4bf7-409c-a01f-3a4731ef8a32\\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.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 2316 set thread context of 2336 | N/A | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe |
| PID 4272 set thread context of 1548 | N/A | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe | C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\55e7ed03-4bf7-409c-a01f-3a4731ef8a32" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.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 | 172.210.232.199.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| BG | 84.252.15.104:80 | cajgtus.com | tcp |
| KR | 211.181.24.132:80 | sdfjhuz.com | tcp |
| BG | 84.252.15.104:80 | cajgtus.com | tcp |
| BG | 84.252.15.104:80 | cajgtus.com | tcp |
| BG | 84.252.15.104:80 | cajgtus.com | tcp |
| BG | 84.252.15.104:80 | cajgtus.com | tcp |
| US | 52.111.229.43:443 | tcp |
Files
memory/2316-1-0x0000000004A10000-0x0000000004AAE000-memory.dmp
memory/2316-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp
memory/2336-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2336-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2336-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2336-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\55e7ed03-4bf7-409c-a01f-3a4731ef8a32\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
| MD5 | 07116bba4c9f651cf2c4327698483aa0 |
| SHA1 | 02a9fc8459c6ad451ba571146d5211664b4276d3 |
| SHA256 | 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d |
| SHA512 | d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2 |
memory/2336-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | d61710168ddd3aeac4ccb81d7fdac11f |
| SHA1 | 007ade683162f8313ea23e5cd43acb4e5afeb81d |
| SHA256 | 606c25ba7e67e29251b24345c7fc31d5f4a6a9933e7a8f851ae2545866adb68c |
| SHA512 | 7ea015bb5106115217684488bf141fb572614a1af01917f61bdb858a091ff6b1596d186540f470b806cec68fa1f040378e2a17695a331faf4d0225efe1bc6b61 |
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\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 4671e9cc8e3d2a03236857ce07168852 |
| SHA1 | 92b36638188fe2ef5bfdfefed98957f62c4ac5fa |
| SHA256 | 84bd46ee716c91b7de8a428051621f8911e7c2fdbf2820dc0bbf3edea222ddbb |
| SHA512 | fb7c40c37f5995fbd178d4ec51719173775c666de3a1f96da9ce21fc5d8b84810fa2b4b96a0193165bb9734318627864e600f91ccea13be6fb07914a21ca6b02 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/1548-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-37-0x0000000000400000-0x0000000000537000-memory.dmp