Analysis Overview
SHA256
f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0
Threat Level: Known bad
The file f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0 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
2024-05-21 12:14
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-21 12:14
Reported
2024-05-21 12:16
Platform
win10v2004-20240508-en
Max time kernel
141s
Max time network
124s
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 |
| 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\de6d7c77-a6c5-4aad-9aee-3f9bbefbeeb8\\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.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 4564 set thread context of 4136 | N/A | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe |
| PID 1716 set thread context of 1212 | N/A | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe"
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\de6d7c77-a6c5-4aad-9aee-3f9bbefbeeb8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.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 | 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 |
| BR | 189.61.54.32:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 216.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| AZ | 185.18.245.58:80 | sdfjhuz.com | tcp |
| BR | 189.61.54.32:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 32.54.61.189.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.245.18.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| NL | 23.62.61.88:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.61.62.23.in-addr.arpa | udp |
| BR | 189.61.54.32:80 | cajgtus.com | tcp |
| BR | 189.61.54.32:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| BR | 189.61.54.32:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.24.18.2.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 | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
Files
memory/4564-1-0x0000000003FE0000-0x0000000004078000-memory.dmp
memory/4564-2-0x0000000004090000-0x00000000041AB000-memory.dmp
memory/4136-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\de6d7c77-a6c5-4aad-9aee-3f9bbefbeeb8\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
| MD5 | be321c572727e800755c4b8a1259dbd0 |
| SHA1 | a7977c6c83b51f2caa7ee89b5afdbf2c5ddf3cdb |
| SHA256 | f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0 |
| SHA512 | 258a831243ac3121368333488cfae24ae2572d94fc739238e56e4b67d69420a2ce7ca9a6645c634ab7d91040b196ad2850309df2885f1d2976b49d6de5a4703d |
memory/4136-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | df80f9ba75076db634761b6132e0d4e3 |
| SHA1 | 07983946fb660752c7cccb2ef82d01ec4c9ecc5d |
| SHA256 | d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99 |
| SHA512 | 4ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a |
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 | 80119f81e2051d052f9e5a260260bd44 |
| SHA1 | c378ba712fbc0ce038990a220a195b3bcae0ef1f |
| SHA256 | 09357c4e87513815afd7e10de91d6d15fab6d187843c8cb59ae9660ae4a0f8f0 |
| SHA512 | 6d51e17f4d13d66f5ecd07f0cdfd57ea549c31a52744c8e77f354adc5da01566a0091abba073b7ffb747d4d6a06068d4b228761e3032ad376265def9feade896 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | e9dbef1bfa5823f9e4f1c48545e0e05b |
| SHA1 | ae053f0aa40e3a5546e7c248afd603ea67fcfbaf |
| SHA256 | e556ef7c642486cc00e2906ee58ab1f45e13689aeff734a28ebd74a6eba92391 |
| SHA512 | d4afc7378d5a67a79645a81e6e3321167bad007428068a88eb262d857e56fbe10b29502299b5895ae213d772f0b239b524946c507cf92a4db5a2a7f72fd44299 |
memory/1212-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1212-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-21 12:14
Reported
2024-05-21 12:16
Platform
win11-20240426-en
Max time kernel
146s
Max time network
151s
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 |
| 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-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\084cf14c-1a51-4828-a8a2-657aaa667a58\\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.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 3396 set thread context of 716 | N/A | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe |
| PID 1972 set thread context of 4324 | N/A | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe | C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe"
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\084cf14c-1a51-4828-a8a2-657aaa667a58" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
"C:\Users\Admin\AppData\Local\Temp\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| 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 | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| BG | 84.252.15.104:80 | cajgtus.com | tcp |
| AZ | 185.18.245.58:80 | 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 |
Files
memory/3396-1-0x00000000040E0000-0x0000000004174000-memory.dmp
memory/3396-2-0x0000000004210000-0x000000000432B000-memory.dmp
memory/716-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/716-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/716-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/716-5-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\084cf14c-1a51-4828-a8a2-657aaa667a58\f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0.exe
| MD5 | be321c572727e800755c4b8a1259dbd0 |
| SHA1 | a7977c6c83b51f2caa7ee89b5afdbf2c5ddf3cdb |
| SHA256 | f352876b06c96492e19d04561c4445fff1e102451655245585bc96db8a7da3b0 |
| SHA512 | 258a831243ac3121368333488cfae24ae2572d94fc739238e56e4b67d69420a2ce7ca9a6645c634ab7d91040b196ad2850309df2885f1d2976b49d6de5a4703d |
memory/716-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | df80f9ba75076db634761b6132e0d4e3 |
| SHA1 | 07983946fb660752c7cccb2ef82d01ec4c9ecc5d |
| SHA256 | d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99 |
| SHA512 | 4ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a |
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 | 2674d402f1f232eebf2fac24f0f9c17f |
| SHA1 | 5b627911f70f74808489eca95a93c551c98be4e4 |
| SHA256 | e1b687daf517c5e2f6a725f49927615d85b10b934a41ca3025554a713f3d69d4 |
| SHA512 | dc17fdbca5b4d8cc8333b80290c38ecf4572b8c63e9183abd42bdbea0cb6baaf0d6a5d31c8bf06538f4444dc3d89fcd96cffeaaf4d71eafba26b72fdf7487975 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 4565cff4a30ac8a01576cc5864e81182 |
| SHA1 | 2e131be96da5454dbd2ad8aa6bd16b64c09fb506 |
| SHA256 | 87dec27cb778d6aa45a45ec47bc40da76ce8e3c785fca3cf3dc207a6fb7c6d85 |
| SHA512 | 881dcf280c0047888ff00045b9b117f53282474380ad901e19ea2a8f3e448cfcdfb09ceabff66b3b5b69286df104004cb52bba85c9900b58ee30972dc42cdcdf |
memory/4324-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-37-0x0000000000400000-0x0000000000537000-memory.dmp