Analysis Overview
SHA256
09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319
Threat Level: Known bad
The file 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319 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
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-21 15:19
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-21 15:19
Reported
2024-05-21 15:22
Platform
win10v2004-20240226-en
Max time kernel
151s
Max time network
152s
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a23cfecf-08ad-4d44-af00-bffacd7b0153\\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.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 3544 set thread context of 4392 | N/A | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe |
| PID 5452 set thread context of 5364 | N/A | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\a23cfecf-08ad-4d44-af00-bffacd7b0153" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.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=3984 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
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 | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| GB | 142.250.187.202:443 | tcp | |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| BR | 177.129.90.106:80 | cajgtus.com | tcp |
| CO | 190.146.112.188:80 | sdfjhuz.com | tcp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| BR | 177.129.90.106:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 106.90.129.177.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 188.112.146.190.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| BR | 177.129.90.106:80 | cajgtus.com | tcp |
| BR | 177.129.90.106:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| BR | 177.129.90.106:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 27.173.189.20.in-addr.arpa | udp |
Files
memory/3544-1-0x0000000004130000-0x00000000041D1000-memory.dmp
memory/3544-2-0x00000000041E0000-0x00000000042FB000-memory.dmp
memory/4392-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4392-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4392-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4392-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\a23cfecf-08ad-4d44-af00-bffacd7b0153\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
| MD5 | afc2780d65fe1e67d01ae629cd2f1e0f |
| SHA1 | cabfc8608feca588c98e30476e79b9df85171c6f |
| SHA256 | 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319 |
| SHA512 | 390b4b8a11c099d512e2388c408492190311b2daaefc063c9279b6cc3f3a96ec3b71a1905556188439b42d29d2bde40662241a4ba08a456e5c72af3307f915b5 |
memory/4392-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4392-25-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 1cfbe0c60c34be3d40893c3a11d61674 |
| SHA1 | 0669783ca1f50381103b014b185f1faf28d6f290 |
| SHA256 | 6afdd946e9700d2396d57ab143b83aba05ba2326096eaedec06bb11e86c86774 |
| SHA512 | 26003c8b3ef4cab30f689aea32b49bdd133b7ddf6195d47f1f6f3bb27071dda62e89e102569645865da1f1951d4bd1b05aa6019cb5c06a20224eb7708a3d5d55 |
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 | 71337f56f251f6817e96cdd5a57f008f |
| SHA1 | 2cd2610a56d0157b245da3572b19230e88095416 |
| SHA256 | 5a7f2ff5db3cf828a70623358742c7fac5761488cf9cfd7b451eb43be48bc9dc |
| SHA512 | 8c688416aff913c1f788d9eaf89abdeb317fd096ed4928ec0e69eace4a4e166d262e65a1df9667cce5495bb3b2bf2eeb5fa39e616e189f1957a7e66423b21df5 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/5364-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5364-40-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-21 15:19
Reported
2024-05-21 15:21
Platform
win11-20240426-en
Max time kernel
143s
Max time network
125s
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 |
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-1-5-21-3938118698-2964058152-2337880935-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\169efb0b-ea79-4a42-9a64-ddc60b2b1e86\\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.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 5024 set thread context of 124 | N/A | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe |
| PID 2200 set thread context of 4900 | N/A | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe | C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\169efb0b-ea79-4a42-9a64-ddc60b2b1e86" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
"C:\Users\Admin\AppData\Local\Temp\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.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 | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| KR | 211.171.233.129:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.169.217.172.in-addr.arpa | udp |
| KR | 175.119.10.231:80 | sdfjhuz.com | tcp |
| KR | 211.171.233.129:80 | cajgtus.com | tcp |
| KR | 211.171.233.129:80 | cajgtus.com | tcp |
| KR | 211.171.233.129:80 | cajgtus.com | tcp |
| KR | 211.171.233.129:80 | cajgtus.com | tcp |
Files
memory/124-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/124-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/124-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/124-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5024-2-0x0000000004290000-0x00000000043AB000-memory.dmp
memory/5024-1-0x0000000004140000-0x00000000041DD000-memory.dmp
C:\Users\Admin\AppData\Local\169efb0b-ea79-4a42-9a64-ddc60b2b1e86\09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319.exe
| MD5 | afc2780d65fe1e67d01ae629cd2f1e0f |
| SHA1 | cabfc8608feca588c98e30476e79b9df85171c6f |
| SHA256 | 09c996d86da2ff031b3039f9d0c26411ab6e4ef60042c1927d21b83c50104319 |
| SHA512 | 390b4b8a11c099d512e2388c408492190311b2daaefc063c9279b6cc3f3a96ec3b71a1905556188439b42d29d2bde40662241a4ba08a456e5c72af3307f915b5 |
memory/124-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4900-22-0x0000000000400000-0x0000000000537000-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 | a3c4f59b445cc6ce8d6bd967738b2466 |
| SHA1 | c965d616dfc20ade69f654fdd64940ae0ec71585 |
| SHA256 | 1366d188516345257e9717ade350dd7ee1bcfb647eb96e7abcc0b1aa0e97a2ce |
| SHA512 | 72ff1445b776189a0fa4c14a18cc2a38f5efa0db3b92ed9c3a432048b2281d8b8a6e88812711b85c995a26cb6a76b1bf68b8df1b3a6d30f33868216bfd13dfce |
memory/4900-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4900-27-0x0000000000400000-0x0000000000537000-memory.dmp
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 | 76acad754bd7aa5340ced025611ead1a |
| SHA1 | cd7d8adaa97daa47c3ef494bb0c00c247a39cf7d |
| SHA256 | ef9f4cf873820999a935507be6da187aa42e0b2d8fc0467a7182805b768bc759 |
| SHA512 | 2b0ff969b2108e2d043f88f43ea4a2d8d44eae069981b809d238e78f8dd436f6e5b449c0d40ad4f0e69c9429669406a5772e84c181447089a9f9584a90e294c9 |
memory/4900-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4900-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4900-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4900-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4900-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4900-37-0x0000000000400000-0x0000000000537000-memory.dmp