Analysis Overview
SHA256
628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e
Threat Level: Known bad
The file 628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e 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
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-22 04:57
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-22 04:57
Reported
2024-05-22 04:59
Platform
win10v2004-20240508-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
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\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.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\\408a7dc6-7e1b-4087-8561-091ef1a1a63f\\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.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 2208 set thread context of 4328 | N/A | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe |
| PID 776 set thread context of 3280 | N/A | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe"
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\408a7dc6-7e1b-4087-8561-091ef1a1a63f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.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 | 154.239.44.20.in-addr.arpa | udp |
| 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 |
| IQ | 195.85.218.100:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.218.85.195.in-addr.arpa | udp |
| IR | 46.100.50.5:80 | sdfjhuz.com | tcp |
| IQ | 195.85.218.100:80 | cajgtus.com | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 5.50.100.46.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| IQ | 195.85.218.100:80 | cajgtus.com | tcp |
| IQ | 195.85.218.100:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| IQ | 195.85.218.100:80 | 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 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.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 |
Files
memory/2208-1-0x0000000002500000-0x000000000259D000-memory.dmp
memory/2208-2-0x0000000004170000-0x000000000428B000-memory.dmp
memory/4328-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4328-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4328-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4328-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\408a7dc6-7e1b-4087-8561-091ef1a1a63f\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
| MD5 | f4ac3bb65473350957e8ea894b4a2532 |
| SHA1 | 315b733cac562d5dc8c6e04b5d26f45bd849f202 |
| SHA256 | 628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e |
| SHA512 | 215d839238739b2242522666a5f3fdd1c7cb967ad2d3d44e00a72d6b16530aa7a0b007274b49613276d8136595bd6a718c9c69d086cd85098d616fbbe94dbdba |
memory/4328-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 899f44a98faebba6aae9269798345a87 |
| SHA1 | a304c93f7fcec09ae9d2f6c9f28967dbe6d57e6c |
| SHA256 | 2a2b0c5d4923b9dbe3abc126a3b8e71701b3f62d7ee962c84f1be98637f31510 |
| SHA512 | 8005cc0856dc0c25ad2f2fa8c3a3257650719e67848fab93f09308e26ab0d786da40f54736f1c5bc2533110b45c4620d90347a43eba416e6dd9e79dff5f5f810 |
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 | 7ada31a1faeae1c6931cdf4d69e6698f |
| SHA1 | 059589de387bcc62a0221ad2ee19a7023b01f6d5 |
| SHA256 | c9ae61f1a78fe675647d30b14e32aba9f12e10adce67f516aeb7d6c6f912f452 |
| SHA512 | 8a1b5cbe337c7a59d8c200bf3111e69a393ebd96be0f08317608f3bce93f42db634bcb557c120b17663b9c3b61838f18b785e24ae77d5f1c36d2cbc9114c8528 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | cb35bd9d6c5a4fd50a9263018bbd9784 |
| SHA1 | efec24f93d2af7bd01969c36870ebc928fa6c790 |
| SHA256 | be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612 |
| SHA512 | ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11 |
memory/3280-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 04:57
Reported
2024-05-22 04:59
Platform
win11-20240508-en
Max time kernel
147s
Max time network
150s
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\\c32bdc0b-64b6-40a5-bb7d-a87c205fee09\\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.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 8 set thread context of 5012 | N/A | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe |
| PID 2308 set thread context of 4340 | N/A | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe | C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe"
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\c32bdc0b-64b6-40a5-bb7d-a87c205fee09" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
"C:\Users\Admin\AppData\Local\Temp\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.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 | 249.138.73.23.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| SA | 94.98.232.163:80 | sdfjhuz.com | tcp |
| MA | 105.159.16.236:80 | sdfjhuz.com | tcp |
| SA | 94.98.232.163:80 | sdfjhuz.com | tcp |
| SA | 94.98.232.163:80 | sdfjhuz.com | tcp |
| SA | 94.98.232.163:80 | sdfjhuz.com | tcp |
| SA | 94.98.232.163:80 | sdfjhuz.com | tcp |
| US | 52.111.229.19:443 | tcp |
Files
memory/8-1-0x0000000002790000-0x000000000282A000-memory.dmp
memory/8-2-0x00000000041D0000-0x00000000042EB000-memory.dmp
memory/5012-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5012-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5012-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5012-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\c32bdc0b-64b6-40a5-bb7d-a87c205fee09\628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e.exe
| MD5 | f4ac3bb65473350957e8ea894b4a2532 |
| SHA1 | 315b733cac562d5dc8c6e04b5d26f45bd849f202 |
| SHA256 | 628bb09d4a1fb84f30fedf4b6bfdf039fc3f7d6d1dce80d0ea4bf0e83747050e |
| SHA512 | 215d839238739b2242522666a5f3fdd1c7cb967ad2d3d44e00a72d6b16530aa7a0b007274b49613276d8136595bd6a718c9c69d086cd85098d616fbbe94dbdba |
memory/5012-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | cb35bd9d6c5a4fd50a9263018bbd9784 |
| SHA1 | efec24f93d2af7bd01969c36870ebc928fa6c790 |
| SHA256 | be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612 |
| SHA512 | ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | ff05ee3c7f11658a89ac9d9bbee73347 |
| SHA1 | 1c30e3a7d58e6667ea68b7b73861257f81c037a7 |
| SHA256 | bafac9cdda50175096c079657ae60e2970c52e1efe1f8db146aa9326acd3a32d |
| SHA512 | 697bab0b6c0f3df0c8839bf1650f7de0e2a9211e4f9fbe54163da169720942ccff4c73e7d87401f67aa6cac49dfba197e771a7e2e068b083e1e57f440871a4a0 |
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 | 4eb4ed411e2f6ec6897278b921dc7780 |
| SHA1 | d64d8c45bf41fd6420f02c2de0c0ce7e3ca9c0ec |
| SHA256 | b98fffe64b36979eb206abc40775127babb0bb511ed214e8932dd10e42ccfa53 |
| SHA512 | 02009f4c5bc022fdafe3575d0bc6deb035744e74f4d848b130af64582b6db3588053c17b2d4f3adf33d4aadf09bc72293284e84209a5bf98c8a523f7c31cc8e4 |
memory/4340-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4340-37-0x0000000000400000-0x0000000000537000-memory.dmp