Analysis Overview
SHA256
c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3
Threat Level: Known bad
The file c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3 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
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-09 08:02
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-09 08:02
Reported
2024-04-09 08:04
Platform
win10v2004-20240226-en
Max time kernel
145s
Max time network
143s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.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-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\09c57500-5d82-435e-a9b5-1e24c1fce9bd\\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.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 2660 set thread context of 3284 | N/A | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe |
| PID 2604 set thread context of 4320 | N/A | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe"
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\09c57500-5d82-435e-a9b5-1e24c1fce9bd" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe" --Admin IsNotAutoStart IsNotTask
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1292 --field-trial-handle=2588,i,4353937220825226770,7138584070663735671,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.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 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.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 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | sajdfue.com | udp |
| EG | 102.189.37.87:80 | sajdfue.com | tcp |
| JM | 63.143.98.185:80 | sdfjhuz.com | tcp |
| EG | 102.189.37.87:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 185.98.143.63.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 87.37.189.102.in-addr.arpa | udp |
| EG | 102.189.37.87:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| EG | 102.189.37.87:80 | sajdfue.com | tcp |
| EG | 102.189.37.87:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 13.107.246.64:443 | tcp | |
| US | 8.8.8.8:53 | 101.58.20.217.in-addr.arpa | udp |
Files
memory/2660-1-0x00000000049E0000-0x0000000004A81000-memory.dmp
memory/2660-2-0x0000000004A90000-0x0000000004BAB000-memory.dmp
memory/3284-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3284-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3284-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3284-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\09c57500-5d82-435e-a9b5-1e24c1fce9bd\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
| MD5 | f797618d3ffd9c1240db9d52a9a977ac |
| SHA1 | 51683323368d28657a2916a2c7bd0e5d3b2f2f7c |
| SHA256 | c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3 |
| SHA512 | be0c7e88ca37fdc212033c70e527e99d939c62c0846a39e79c3f87d81fb1b9a38f5da835a41f6a3e73f3f1ea2fb0f1eb420a010edd78edfaf44c06595e921482 |
memory/3284-16-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2604-18-0x00000000049A0000-0x0000000004A3A000-memory.dmp
memory/4320-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 2d54fd29a0861e351e69e53652ec21e2 |
| SHA1 | 61f42be74de7b7e819cc73f27ebd5286eb8330c8 |
| SHA256 | 3062860eb8018fd2195354474806594c4ed30ab6970d3f078fe597cdbc56387f |
| SHA512 | 3f25bcfb5966f099acc7e3193ead5336603e4c160af84d27d78d207d96cca43b7b3bbdc2ab1e88245e32dfa626942493fbe0142c445d10a3d3e6ba0eba1e3542 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | fc5408c48a55314c72e200b74330cac4 |
| SHA1 | 7e8889ec3189a40e6078088927bf3612753fa628 |
| SHA256 | 7ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4 |
| SHA512 | 481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 1d5428cf3b208036f12c8d69a1b2fa6d |
| SHA1 | f37048b017910ca90e1851c21689b05b78996ec0 |
| SHA256 | c16039fb90770622fef3fa76bce5cee2a96e799de30e931f1a075e85a63d5444 |
| SHA512 | ee59ffe4ab18274d96d1035688a9574f13f3858397befa01082a729f922e6b509ad0a8d95da0b69abdea57e68c11a604184c95da5e6982966219fef8f4c23098 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/4320-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4320-38-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-09 08:02
Reported
2024-04-09 08:04
Platform
win11-20240221-en
Max time kernel
146s
Max time network
138s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\84c58587-00db-4012-ac72-72f4fffc2a43\\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.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 5000 set thread context of 1548 | N/A | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe |
| PID 4600 set thread context of 3372 | N/A | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe | C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe"
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\84c58587-00db-4012-ac72-72f4fffc2a43" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
"C:\Users\Admin\AppData\Local\Temp\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.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 | 220.139.67.172.in-addr.arpa | 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 |
| JM | 63.143.98.185:80 | sdfjhuz.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 45.93.45.200.in-addr.arpa | udp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
Files
memory/5000-1-0x0000000004AB0000-0x0000000004B4C000-memory.dmp
memory/5000-2-0x0000000004B50000-0x0000000004C6B000-memory.dmp
memory/1548-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1548-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\84c58587-00db-4012-ac72-72f4fffc2a43\c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3.exe
| MD5 | f797618d3ffd9c1240db9d52a9a977ac |
| SHA1 | 51683323368d28657a2916a2c7bd0e5d3b2f2f7c |
| SHA256 | c9344fbec95521e5ae836c54130418c2cc6dbe94aa3b4ee606e8c2a5387230b3 |
| SHA512 | be0c7e88ca37fdc212033c70e527e99d939c62c0846a39e79c3f87d81fb1b9a38f5da835a41f6a3e73f3f1ea2fb0f1eb420a010edd78edfaf44c06595e921482 |
memory/1548-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4600-20-0x0000000004990000-0x0000000004A2B000-memory.dmp
memory/3372-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-24-0x0000000000400000-0x0000000000537000-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 | 63cdeed2ee9542c9d5d8f6c898d1b32f |
| SHA1 | 8976da045e280f555e18a3af4a8baa90b0402539 |
| SHA256 | 12e9b04f3dfd97b24a2eeafda29b88d2d847ecc87b645d2668be8bdaa65ee961 |
| SHA512 | 89e5596f19af064a86d8e8afc97f2579c14c92307ec16847d0bf15c2892f0453a7de54dfe675d1894254451953ba8d9fbb8f5daed68d9cbdec7e92e84bdc54f0 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | fc5408c48a55314c72e200b74330cac4 |
| SHA1 | 7e8889ec3189a40e6078088927bf3612753fa628 |
| SHA256 | 7ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4 |
| SHA512 | 481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 24acbe75f6b0b1c9e428c74e549ff208 |
| SHA1 | 61ced175574280d3c9d3eb1ecc4bdf7c01bbbdd5 |
| SHA256 | ec6a7c3a74465ac17d68cf2960899f6eaaa85a3208931c2a3838d3347ec1dbc7 |
| SHA512 | 26650b47a30cbda3df09488482d36740289c4f49bad43a4b45e8e4498b35a0ccf53d5a4d465e95b0c4a1041cb651521b049a7c7ef80a5f01057449ec014810c8 |
memory/3372-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3372-40-0x0000000000400000-0x0000000000537000-memory.dmp