Analysis Overview
SHA256
37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6
Threat Level: Known bad
The file 37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6 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 use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-23 04:51
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-23 04:51
Reported
2024-05-23 04:54
Platform
win10v2004-20240426-en
Max time kernel
150s
Max time network
150s
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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.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-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c7f6720c-1724-460d-bcd8-cce2e9d00e6f\\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.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 768 set thread context of 4992 | N/A | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe |
| PID 380 set thread context of 3476 | N/A | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe"
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\c7f6720c-1724-460d-bcd8-cce2e9d00e6f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.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 | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 96.136.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 35.169.217.172.in-addr.arpa | udp |
| 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 |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| JO | 176.29.154.25:80 | sdfjhuz.com | tcp |
| CO | 190.159.30.35:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| CO | 190.159.30.35:80 | cajgtus.com | tcp |
| BE | 2.17.107.115:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 35.30.159.190.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.154.29.176.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 115.107.17.2.in-addr.arpa | udp |
| BE | 2.17.107.115:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| CO | 190.159.30.35:80 | cajgtus.com | tcp |
| CO | 190.159.30.35:80 | cajgtus.com | tcp |
| CO | 190.159.30.35:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.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 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/768-2-0x0000000003D60000-0x0000000003E7B000-memory.dmp
memory/768-1-0x00000000022C0000-0x0000000002357000-memory.dmp
memory/4992-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4992-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4992-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4992-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\c7f6720c-1724-460d-bcd8-cce2e9d00e6f\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
| MD5 | facb53cd1795e8855b6c35710034d98a |
| SHA1 | 016c1626958a4a5bd9af4461672f403d54f37a4b |
| SHA256 | 37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6 |
| SHA512 | 711960191216ffc25c74bac12af22a851e7d8d3841342edf1b23b390dc52f90ff27f6888e10fc25042ce69c5c7f949c9cef0adbabaf3a1f50e4624a637a974c3 |
memory/4992-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3476-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/380-23-0x0000000000400000-0x0000000002015000-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 | 9326e40a8ad6ee96dd361f80c06ced53 |
| SHA1 | 226dc4755c210c64c3b494b3b9cda8609a52cd98 |
| SHA256 | 3d5d045529479d4078a0df7a7bd21a6ff4511089c77e3fb551f0cebee93fa53e |
| SHA512 | d139827c2bf6da9f79030dbb9943205e8536e56429a303a364eadce24bb1006078f0a4834ccd433619df6838b104382afc8d1b8dccc8114f838221d6e4c0ff37 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 7575c39a544943a68ce6e709c586005a |
| SHA1 | 4874b30bd1d455b28a95c4e21c5aecd1ea043d7a |
| SHA256 | 4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8 |
| SHA512 | abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | e824acb2fa640c6ddfbc9c7a3b3f65c4 |
| SHA1 | 7b387e77708cc98291b9e8c06a5a22b296333ef8 |
| SHA256 | 0fdf167df2159cc4c6c9dd67e47049678916b5660f33618f9a6c15c6669cc5a7 |
| SHA512 | 972baffb77ad2a3d6b51a4bacf26482288847c94ac13ecf8c6a30b9b73c18de4764ca1002a788e362122812aca64edf205cf9486026d41173a7d5371e81efcb4 |
memory/3476-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3476-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3476-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/380-33-0x0000000000400000-0x0000000002015000-memory.dmp
memory/3476-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3476-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3476-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3476-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3476-40-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-23 04:51
Reported
2024-05-23 04:54
Platform
win11-20240426-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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| 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-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\aa61ef3d-a509-4af3-b6bb-ff1c4018748c\\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.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 2572 set thread context of 3936 | N/A | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe |
| PID 2336 set thread context of 396 | N/A | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe | C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe"
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\aa61ef3d-a509-4af3-b6bb-ff1c4018748c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
"C:\Users\Admin\AppData\Local\Temp\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.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 | 172.67.139.220:443 | api.2ip.ua | tcp |
| JM | 63.143.98.185:80 | cajgtus.com | tcp |
| MX | 187.170.192.109:80 | sdfjhuz.com | tcp |
| JM | 63.143.98.185:80 | cajgtus.com | tcp |
| JM | 63.143.98.185:80 | cajgtus.com | tcp |
| JM | 63.143.98.185:80 | cajgtus.com | tcp |
| JM | 63.143.98.185:80 | cajgtus.com | tcp |
Files
memory/2572-1-0x00000000021F0000-0x0000000002284000-memory.dmp
memory/2572-2-0x0000000003DD0000-0x0000000003EEB000-memory.dmp
memory/3936-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3936-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3936-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3936-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\aa61ef3d-a509-4af3-b6bb-ff1c4018748c\37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6.exe
| MD5 | facb53cd1795e8855b6c35710034d98a |
| SHA1 | 016c1626958a4a5bd9af4461672f403d54f37a4b |
| SHA256 | 37653651fd80037f8d8b4020444fd664673256489cb69c50e3e69f992958cee6 |
| SHA512 | 711960191216ffc25c74bac12af22a851e7d8d3841342edf1b23b390dc52f90ff27f6888e10fc25042ce69c5c7f949c9cef0adbabaf3a1f50e4624a637a974c3 |
memory/3936-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 7575c39a544943a68ce6e709c586005a |
| SHA1 | 4874b30bd1d455b28a95c4e21c5aecd1ea043d7a |
| SHA256 | 4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8 |
| SHA512 | abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1 |
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 | 05ae93ecf61b8f55b4d7acc8bf0cc32b |
| SHA1 | af99063ad093da054e0d4001b7278ca83421fedc |
| SHA256 | be5cb561b756cd7b220775ddaabfe6751ccad59998de3f674b7a1a1b47b857e3 |
| SHA512 | afed1b39f242cba15334eb60a4c8cf7986aad24aff88d180a2bd9dd5f15a6f7d48699e0bdb5c491ebf0ce80cf621557b5e3597a1d0fa8f1a1db3cf8239c3fa23 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | fe4210b2a3486151393da7f7d06b50c1 |
| SHA1 | 1d772b22b36d8a6e2b738d2aa707df635a9a5e0a |
| SHA256 | 787e0bbc48d732eed7a02124e1c0407c4748f154bf515dc79e148809e9616a7e |
| SHA512 | 4e73b35eefd00c270b0fac73b1882f1a151e67d4ae9f6447d4ed868f06da772c74213d80aa36e307ab834af50113252ecd37aa05d964a8cd5a2c30bc54cc62a0 |
memory/396-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/396-37-0x0000000000400000-0x0000000000537000-memory.dmp