Analysis Overview
SHA256
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925
Threat Level: Known bad
The file 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected 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
2024-05-21 16:52
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-21 16:52
Reported
2024-05-21 16:54
Platform
win10v2004-20240508-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e96480df-5860-4ab2-8a3f-af6f2b0ddd70\\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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 1176 set thread context of 224 | N/A | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe |
| PID 1184 set thread context of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e96480df-5860-4ab2-8a3f-af6f2b0ddd70" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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 | 209.205.72.20.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 |
| 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 |
| KR | 211.171.233.129:80 | sdfjhuz.com | tcp |
| MD | 188.237.2.116:80 | cajgtus.com | tcp |
| MD | 188.237.2.116:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 129.233.171.211.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 116.2.237.188.in-addr.arpa | udp |
| MD | 188.237.2.116:80 | cajgtus.com | tcp |
| MD | 188.237.2.116:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| MD | 188.237.2.116:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 252.15.104.51.in-addr.arpa | udp |
Files
memory/1176-1-0x0000000002620000-0x00000000026BE000-memory.dmp
memory/1176-2-0x00000000040D0000-0x00000000041EB000-memory.dmp
memory/224-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/224-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/224-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/224-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\e96480df-5860-4ab2-8a3f-af6f2b0ddd70\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
| MD5 | 05567327c48b4b2af47574295ee9748b |
| SHA1 | 7595f946efc74526f2b989413e73e3f37c4b4765 |
| SHA256 | 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925 |
| SHA512 | 293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea |
memory/224-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 07b3c102f8e0108d99b166ad34fb2d63 |
| SHA1 | 0d90f1bee5423489e185ebcfd1ec45a2c409d10e |
| SHA256 | 31ccccbb030e1968525d8bc9b8958901ecef24d1cb9500d82fc209eee5e035a7 |
| SHA512 | 709bb8b25e9231bdda3d91373399f589a10a453a5af3c0e7ed7c60e870ec68dd54c42c1442293a27b3d38f47548604699821f1b4e7c99eee4053b86ded91d4a4 |
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\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 53e133804099ee4563995b5863867eba |
| SHA1 | f3335e1160d1ba6078b2db0437f79c046dfc112f |
| SHA256 | d7be0b4f8d9fd2173668bc601f2a248f80a1c4ed61d5958b88a60ae558177173 |
| SHA512 | 4a5b98fcbef7a7603d3600874b5132255222786121eee84391cb6bb084e81653485399e7d9cba80d8ce785843208d78a86748e9f45a707e98f2533b27de45018 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/2360-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2360-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-21 16:52
Reported
2024-05-21 16:54
Platform
win11-20240426-en
Max time kernel
147s
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
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-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4ec1203a-241f-45b4-b9ef-6d30db4a1760\\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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 4676 set thread context of 4172 | N/A | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe |
| PID 3940 set thread context of 3924 | N/A | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe | C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4ec1203a-241f-45b4-b9ef-6d30db4a1760" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| PY | 181.123.150.165:80 | cajgtus.com | tcp |
| ZA | 192.143.130.208:80 | sdfjhuz.com | tcp |
| PY | 181.123.150.165:80 | cajgtus.com | tcp |
| PY | 181.123.150.165:80 | cajgtus.com | tcp |
| PY | 181.123.150.165:80 | cajgtus.com | tcp |
| PY | 181.123.150.165:80 | cajgtus.com | tcp |
Files
memory/4676-2-0x00000000041C0000-0x00000000042DB000-memory.dmp
memory/4676-1-0x00000000026F0000-0x0000000002787000-memory.dmp
memory/4172-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4172-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4172-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4172-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\4ec1203a-241f-45b4-b9ef-6d30db4a1760\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
| MD5 | 05567327c48b4b2af47574295ee9748b |
| SHA1 | 7595f946efc74526f2b989413e73e3f37c4b4765 |
| SHA256 | 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925 |
| SHA512 | 293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea |
memory/4172-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-22-0x0000000000400000-0x0000000000537000-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 | a85e27176d1dafb8a12a7c8ddd79f350 |
| SHA1 | ae826f67567a3c159909ca3af27a9abe940f5446 |
| SHA256 | 729f63eb238ac407371267111df9a8897b5611574ee4bd198fa5a7a9310dbd69 |
| SHA512 | 5c0d80fb0f434e1826869309f0acced7fc54bb2649aec9a44f7645e6afe5285666026d7e7bbd0cf8f701c4317a4c82d4fd57ca12348de9bab9f45909a5590a9b |
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\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 5a0c1b62e34e6bec371911015f7ca1c6 |
| SHA1 | 697badd53e4eeb102514f067580f85a9284acfa0 |
| SHA256 | 8c6db261b8159a4b4c3528d316155a3cb667eb984bc5109efea6081162fd7150 |
| SHA512 | afd58694bc72e83eaf17fdb10bcec8bc29755f8fdb30b958deb9edc3c033129d2548a8615451d950172269b61f5756467cb4272909517f43d1467470f2737bdb |
memory/3924-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3924-37-0x0000000000400000-0x0000000000537000-memory.dmp