Analysis Overview
SHA256
35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22
Threat Level: Known bad
The file 35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22 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
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 09:30
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-22 09:30
Reported
2024-05-22 09:32
Platform
win10v2004-20240508-en
Max time kernel
149s
Max time network
149s
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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.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-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\92e9acd4-2088-4a0b-9833-1799f598345a\\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.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 4532 set thread context of 2604 | N/A | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe |
| PID 876 set thread context of 728 | N/A | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\92e9acd4-2088-4a0b-9833-1799f598345a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.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 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| 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 | 14.160.190.20.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 |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| AZ | 213.172.74.157:80 | sdfjhuz.com | tcp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 243.161.140.123.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.74.172.213.in-addr.arpa | udp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.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 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.160:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 160.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/4532-1-0x0000000004930000-0x00000000049CC000-memory.dmp
memory/4532-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp
memory/2604-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2604-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2604-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2604-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\92e9acd4-2088-4a0b-9833-1799f598345a\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
| MD5 | 8d35c959439087a5afeb4102f8d9a537 |
| SHA1 | 9db82f937ff4e3ef9881c0d72557418cee6fb9b3 |
| SHA256 | 35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22 |
| SHA512 | a7c49eca997c58bde5dc7e2edb53a310894f7fc17d4ff7e1c6ab9edf8927738d7143158eb71f7da60d5e268da3cb1f5066b90d514285f784b42f4417ff8dfefe |
memory/2604-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-20-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 195fc28150bef9b30510eed36fb325af |
| SHA1 | 1ea8a314d8af1d431b77d5280d1782e9a8e867c6 |
| SHA256 | 5c2e51ccf5767f80257a0a0bb66dee40957e5379431e15a118e7f1343ad1f6e0 |
| SHA512 | 537da7e46d8b5afc796c1908042088c583c5380fb729f3665845fe36286b3efeaec9fa26475e9c2263f55b1eca04bd7ae26088a9a85950b2b7f750fd24eadcfc |
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 | ebae875c70c43966e9fc32aba2f29cbc |
| SHA1 | b117fa04ef1700f0a484f48d46c8bb4589ef0e59 |
| SHA256 | c57cb73159dbcebfb7901c1525c2eb2ce0cff5a12925b5c0f52d7911c200adb3 |
| SHA512 | 61678196f3fc5755d16cb00b044e4ddd8a66b10dee895b0e021c9f7e4f31243f683abc4f14edbe92922c0b1f5e2c72279069eed03f73a7e05f860e44da26e925 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | d3a63e66f5d9607a347a08deb3e1890b |
| SHA1 | df2ed50de14bbb9f3e5ca1548cbd6bbb2daac99c |
| SHA256 | b0e9296973270823be8a54e41454ea1e1df07f36b84672d6d9e1af86b7ba629a |
| SHA512 | 3cf4edf3fbb4f8c1af28af3390bff504d949818ebe16395f79ed1152907301db4b84fe42c8a4dea5bb6d088775b0a964b98ebe2aad586fa042bf3b57d7d13e1a |
memory/728-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/728-35-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 09:30
Reported
2024-05-22 09:32
Platform
win11-20240419-en
Max time kernel
143s
Max time network
122s
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-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4eed920d-ea67-4d70-8acf-3f3541d59579\\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.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 4688 set thread context of 4568 | N/A | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe |
| PID 772 set thread context of 1696 | N/A | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe | C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4eed920d-ea67-4d70-8acf-3f3541d59579" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
"C:\Users\Admin\AppData\Local\Temp\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.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 |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| BR | 191.186.138.218:80 | sdfjhuz.com | tcp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
| KR | 123.140.161.243:80 | cajgtus.com | tcp |
Files
memory/4688-1-0x0000000004AC0000-0x0000000004B55000-memory.dmp
memory/4688-3-0x0000000004C60000-0x0000000004D7B000-memory.dmp
memory/4568-2-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4568-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4568-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4568-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\4eed920d-ea67-4d70-8acf-3f3541d59579\35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22.exe
| MD5 | 8d35c959439087a5afeb4102f8d9a537 |
| SHA1 | 9db82f937ff4e3ef9881c0d72557418cee6fb9b3 |
| SHA256 | 35139f78bc8d51dbb8951e76928b9e9ace87ded22239f1f27b24a82651ec4a22 |
| SHA512 | a7c49eca997c58bde5dc7e2edb53a310894f7fc17d4ff7e1c6ab9edf8927738d7143158eb71f7da60d5e268da3cb1f5066b90d514285f784b42f4417ff8dfefe |
memory/4568-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 195fc28150bef9b30510eed36fb325af |
| SHA1 | 1ea8a314d8af1d431b77d5280d1782e9a8e867c6 |
| SHA256 | 5c2e51ccf5767f80257a0a0bb66dee40957e5379431e15a118e7f1343ad1f6e0 |
| SHA512 | 537da7e46d8b5afc796c1908042088c583c5380fb729f3665845fe36286b3efeaec9fa26475e9c2263f55b1eca04bd7ae26088a9a85950b2b7f750fd24eadcfc |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | af0fa387b9d38e203b3eefebf97b9d58 |
| SHA1 | 96b9b2ab775d75cdf6cd8a516fea1712a51e0478 |
| SHA256 | ba874824f09b6549ef9dcf2eade3e56c7a1c0f785e4cdcdbc9d480859201c329 |
| SHA512 | 64c041440057f9b367dfbd885339d9d1f0909c6c49d93aaf2597c6af6635e05ac4ca5513fbcd23c244d05adb3f532da7f04e5c677fbd00105f95fcbae69953bb |
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 | 156f206cb8a9d6d5bc25597f8cd77d49 |
| SHA1 | 809565b0ad960893fa69582de66699affa1ff910 |
| SHA256 | 729434fb1d861404e258918db3db1bf7976bb84c558552dadc804004cf7aaf3e |
| SHA512 | b2662dfd4cf546b3ce78553643efe675268d5045ed0bca7d01f0b3c37456d7c608f614420d860059e71350f99fe5ba2332843cfcc66e8c75843d23d2621647fd |
memory/1696-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1696-37-0x0000000000400000-0x0000000000537000-memory.dmp