Analysis Overview
SHA256
3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8
Threat Level: Known bad
The file 3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Modifies file permissions
Checks computer location settings
Looks up external IP address via web service
Adds Run key to start application
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
2024-05-22 00:03
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-22 00:03
Reported
2024-05-22 00:05
Platform
win10v2004-20240426-en
Max time kernel
149s
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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.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-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c4a7b663-c182-4492-bc30-bb8f935b6da1\\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.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 1692 set thread context of 3800 | N/A | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe |
| PID 1168 set thread context of 4072 | N/A | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe"
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\c4a7b663-c182-4492-bc30-bb8f935b6da1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.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 | 8.8.8.8.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 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| SA | 94.98.232.163:80 | sdfjhuz.com | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | 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 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 163.232.98.94.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 201.190.55.181.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.211.222.173.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.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 | 8.8.8.8:53 | udp |
Files
memory/1692-1-0x00000000024C0000-0x000000000255E000-memory.dmp
memory/1692-2-0x0000000004120000-0x000000000423B000-memory.dmp
memory/3800-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3800-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3800-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3800-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\c4a7b663-c182-4492-bc30-bb8f935b6da1\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
| MD5 | c809827be1c79e65c9dd86e78d7c53f1 |
| SHA1 | ba0403ea800d5b0e68888543f6ca0921f753ddd1 |
| SHA256 | 3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8 |
| SHA512 | ad47c68490b7c34b0ae8001d59071cbf1888de7bb72be29922dc0c3e1eea1624bc1a4dfd6481cc06281363c54d170bbfa37a43b1e720721b18b5813d23ad45c5 |
memory/3800-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-22-0x0000000000400000-0x0000000000537000-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 | 5732c0f01e76f060fea4f34978eb5110 |
| SHA1 | fd9d591de732ad9542f2ec4d6d6e25c56513fbdb |
| SHA256 | 4190e02d575fdf57ae931d6e75a73d449a31d8c6a0909579f2059f462133b825 |
| SHA512 | 35d8d55d46fa4dce397496bf2c190afe057e825ea51bc8d5f73bc633ef9b7eba1cbd14103a00d47eb200791dea336e31040f354bd2e312db96dbb6eb45dd9042 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | a1d955617a4d146e70544d0d9a0390ca |
| SHA1 | 5ffdc4453b23e24a7cb0e634b26864c169f5257b |
| SHA256 | 8dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3 |
| SHA512 | 0bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 300c8cdd381ba847f30cff88b6d73748 |
| SHA1 | 369763069428bf78e534cd7be2b40b433b9cf5d9 |
| SHA256 | 7431badea8dfca0042091cdfa7fced9cdc392e6e3aaf45b76cd47e5ccb67ce79 |
| SHA512 | 07d283508cfe10334fbb379c1eaff7126336a4dc9f7cb40b2468bd5218fde7f6e32ea7772ef84e7402cbef2e74f8e9253faacebf247fe04fc1c2f3dd144673fc |
memory/4072-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4072-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 00:03
Reported
2024-05-22 00:05
Platform
win11-20240426-en
Max time kernel
146s
Max time network
152s
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-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\68c30bef-ea8c-43e6-9d87-e39d860b5d94\\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.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 4132 set thread context of 1696 | N/A | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe |
| PID 1512 set thread context of 3292 | N/A | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe | C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe"
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\68c30bef-ea8c-43e6-9d87-e39d860b5d94" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
"C:\Users\Admin\AppData\Local\Temp\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.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 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| KR | 211.168.53.110:80 | sdfjhuz.com | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
| CO | 181.55.190.201:80 | cajgtus.com | tcp |
Files
memory/4132-2-0x00000000041C0000-0x00000000042DB000-memory.dmp
memory/4132-1-0x00000000025D0000-0x0000000002670000-memory.dmp
memory/1696-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\68c30bef-ea8c-43e6-9d87-e39d860b5d94\3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8.exe
| MD5 | c809827be1c79e65c9dd86e78d7c53f1 |
| SHA1 | ba0403ea800d5b0e68888543f6ca0921f753ddd1 |
| SHA256 | 3d671617eb9309b57270ca90341af42a2512fda22a22b2b47d4b6060110aecd8 |
| SHA512 | ad47c68490b7c34b0ae8001d59071cbf1888de7bb72be29922dc0c3e1eea1624bc1a4dfd6481cc06281363c54d170bbfa37a43b1e720721b18b5813d23ad45c5 |
memory/1696-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-22-0x0000000000400000-0x0000000000537000-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\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | a1d955617a4d146e70544d0d9a0390ca |
| SHA1 | 5ffdc4453b23e24a7cb0e634b26864c169f5257b |
| SHA256 | 8dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3 |
| SHA512 | 0bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | fc645c046b61028ac135d6484834cb8f |
| SHA1 | 0f53da2cd7bd5b6b695f47ebefc6b1c698fe8019 |
| SHA256 | 0adc0b994b1509aeec734e92f21f5c329aaec02fd7d56d403269df9a1caea6c4 |
| SHA512 | 567f0a47bdc02fac646e1aef827c20c9346581337838dd3585f383aa764213fc627261d26b921bc24ab48d242abeb29235eba43b49cfaa2ed969d2b15237a13c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 7a00c45f57b41d4648d4a405aeca7a8b |
| SHA1 | b888be9f54e7b25cae3c695ede5c9d7b13dea882 |
| SHA256 | 5251445e4ea5898e0729257f732a7739523d59abd1316f497162c52ad5d8ddb2 |
| SHA512 | 0f4e384b1df95ac59a53ba81bdb6bbc46114c2f4d3a89ecab0d16cf9d9888eb05fe15f53d5eb7b0e01c69b6ff21b7b4727537601020c713c4bfe0e61da63cd32 |
memory/3292-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3292-37-0x0000000000400000-0x0000000000537000-memory.dmp