Analysis Overview
SHA256
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673
Threat Level: Known bad
The file 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673 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 15:44
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-22 15:44
Reported
2024-05-22 15:47
Platform
win10v2004-20240426-en
Max time kernel
150s
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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.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-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5b37517f-b4b5-4132-8d1d-f47dba5a55e6\\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.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 2480 set thread context of 4616 | N/A | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe |
| PID 3540 set thread context of 2856 | N/A | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\5b37517f-b4b5-4132-8d1d-f47dba5a55e6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.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 | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| NL | 23.62.61.75:443 | www.bing.com | tcp |
| KR | 211.119.84.112:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| MX | 189.232.53.223:80 | cajgtus.com | tcp |
| MX | 189.232.53.223:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 112.84.119.211.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.61.62.23.in-addr.arpa | udp |
| NL | 23.62.61.75:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 223.53.232.189.in-addr.arpa | udp |
| MX | 189.232.53.223:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| MX | 189.232.53.223:80 | cajgtus.com | tcp |
| MX | 189.232.53.223:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.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 | 58.99.105.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/2480-1-0x0000000004920000-0x00000000049B8000-memory.dmp
memory/4616-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4616-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4616-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2480-2-0x0000000004A80000-0x0000000004B9B000-memory.dmp
memory/4616-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\5b37517f-b4b5-4132-8d1d-f47dba5a55e6\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
| MD5 | 2fa6ec658c61947f197c939f130bac1d |
| SHA1 | 363abe0b0187e0463b32178057ddbc14e3853846 |
| SHA256 | 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673 |
| SHA512 | 8708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce |
memory/4616-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-20-0x0000000000400000-0x0000000000537000-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 | 0e582cb2b857632a3be5a459158cfb63 |
| SHA1 | 8d67d507096891cbfa2388c6df579a98703af1aa |
| SHA256 | f0db9a5f481efc2054bfab76d6bc592994a37d3573d38e22860002621d623aca |
| SHA512 | 37d6920e194bfbe6b974d0632e2bd64029e1e9b7195d3a7702b376c1ca447eeb12efea41cde38ed075951138cb0bec445aa785b4d32d0d4aa8afe3df4e897f6c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 6728aea2631b86a76c237508d8ba9b55 |
| SHA1 | 7a670f95cac088313f7558869162fe01c6dc0ec9 |
| SHA256 | e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b |
| SHA512 | 533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 25a7bcd56d3850f53e4c429c3820316a |
| SHA1 | d9e99c7cc6053e8d909b6569b23977c460f2ea45 |
| SHA256 | 085c11ebb1ad1b7c23b189ef5d04bcb66586de437fdc405af406d53d83904a3f |
| SHA512 | 888f0fbbaf35b708fa05c0fbd76f140ec403cffe57fc3886912e84a21b0dfd4cb2cdf4e5eed413d27e03588ccdab4919c62a3f9b2fc17b85280ddaf40aa441e3 |
memory/2856-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2856-35-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-22 15:44
Reported
2024-05-22 15:47
Platform
win11-20240508-en
Max time kernel
143s
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
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-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb\\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.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 4952 set thread context of 2628 | N/A | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe |
| PID 5012 set thread context of 3488 | N/A | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe | C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 188.114.96.2:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 2.96.114.188.in-addr.arpa | udp |
| US | 188.114.96.2:443 | api.2ip.ua | tcp |
| MX | 189.195.132.134:80 | cajgtus.com | tcp |
| PE | 190.12.87.61:80 | sdfjhuz.com | tcp |
| MX | 189.195.132.134:80 | cajgtus.com | tcp |
| MX | 189.195.132.134:80 | cajgtus.com | tcp |
| MX | 189.195.132.134:80 | cajgtus.com | tcp |
| MX | 189.195.132.134:80 | cajgtus.com | tcp |
| US | 52.111.227.14:443 | tcp |
Files
memory/4952-1-0x0000000004A70000-0x0000000004B0A000-memory.dmp
memory/4952-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp
memory/2628-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2628-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2628-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2628-5-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
| MD5 | 2fa6ec658c61947f197c939f130bac1d |
| SHA1 | 363abe0b0187e0463b32178057ddbc14e3853846 |
| SHA256 | 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673 |
| SHA512 | 8708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce |
memory/2628-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 38ad9fd0e6f8edf48096e24d22a2e90c |
| SHA1 | 5be9922d4dce3610e903cfade1c087dea3efdd7c |
| SHA256 | 8031f86553aecae0f09e2b967ca136804007d189312c213885531fee39bd42b9 |
| SHA512 | fdc6e4ad59980f9f2a3e53496fb609e6e775ad1bccdfded143875a8d32b67cb61592b0ca992b977694a270f27ea28fe3304158c4c73e86f304529090decd9a88 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 6728aea2631b86a76c237508d8ba9b55 |
| SHA1 | 7a670f95cac088313f7558869162fe01c6dc0ec9 |
| SHA256 | e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b |
| SHA512 | 533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 1bec94cfdbf29c4991d294f7ed4e5d6b |
| SHA1 | 826bddd9ee354819e51117c70407800c5316e3a8 |
| SHA256 | 38891cf9e72630cd472181eecbbce1ea85e8fd8330726c7f832aff8f596ab503 |
| SHA512 | 428e8d6e0a0d891dc6dba552a9b57eb1c6a18dbc3ddeec757eb6ad6dd0ca0387aa50e41c40a3caf1a934db0420f16f24c415da7af0ff0ff3ff6c2912b9773721 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/3488-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3488-37-0x0000000000400000-0x0000000000537000-memory.dmp