Analysis Overview
SHA256
ca6794679dc6c84aa9870304229cbbbcd4a6c97149bb8bb1fc01912a64d17e2c
Threat Level: Known bad
The file 2024-08-10_258b365aa910c2560eee37b70df27656_stop was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu family
Djvu Ransomware
Modifies file permissions
Checks computer location settings
Adds Run key to start application
Looks up external IP address via web service
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-10 03:49
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Djvu family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-10 03:49
Reported
2024-08-10 03:52
Platform
win7-20240705-en
Max time kernel
33s
Max time network
33s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| 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-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7353fd3e-2dfe-427e-84c3-86c20f0ca404\\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.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 |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\icacls.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\7353fd3e-2dfe-427e-84c3-86c20f0ca404" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.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 | c.pki.goog | udp |
| NL | 142.250.179.131:80 | c.pki.goog | tcp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | uaery.top | udp |
| US | 8.8.8.8:53 | drampik.com | udp |
| US | 8.8.8.8:53 | crl.microsoft.com | udp |
| GB | 2.18.190.80:80 | crl.microsoft.com | tcp |
Files
C:\Users\Admin\AppData\Local\7353fd3e-2dfe-427e-84c3-86c20f0ca404\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe
| MD5 | 258b365aa910c2560eee37b70df27656 |
| SHA1 | 117e38e9ea29f84128ab63e03c3694fc1acc5eec |
| SHA256 | ca6794679dc6c84aa9870304229cbbbcd4a6c97149bb8bb1fc01912a64d17e2c |
| SHA512 | 7ca59107ca25875651d27dfedc6cb0af1528e6cd32d237c4e7986112b9065567ad96784d57bef9ce4b67258bdc04943d1b864fdd1de278d34fea54ec2745e328 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | 7fb5fa1534dcf77f2125b2403b30a0ee |
| SHA1 | 365d96812a69ac0a4611ea4b70a3f306576cc3ea |
| SHA256 | 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f |
| SHA512 | a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | e1eb98f47ffe175a2f055c03ca733744 |
| SHA1 | 3cb174e7e30f18009b404bc6021359783ad02af8 |
| SHA256 | fccea3c4734292d8554df4a854013c76bfbef5a3195afb12d54e7002e1677b51 |
| SHA512 | 9489572d59a91d3562bc75f720d0d90bfd5415fae2d7de3d9e8443d46227999eb375aeefff3f0c2b089de14be53fc8753cb9677514241ad9912f3ecde65766ef |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 971c514f84bba0785f80aa1c23edfd79 |
| SHA1 | 732acea710a87530c6b08ecdf32a110d254a54c8 |
| SHA256 | f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895 |
| SHA512 | 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 9cf9f95c90c649e23d02d7d86b24cd1c |
| SHA1 | f122a1e7f71714448d8115c5b5c0a577f8f651cc |
| SHA256 | d0fe22ae5d169e2838dd3dd8465b230ce8284cc61003c4a3ed7fc5bba4363716 |
| SHA512 | 079731fdb43e51ec2c0ef9d09a3eb0f7f7cac661d1cee17ceec486e9b7ac4e89e6f73c568548bfa918c53d51507251a4691a1920e14ab9795838eb4d338e28bb |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
| MD5 | d3a9ab63ddaab74bedc1e9ee07bca90f |
| SHA1 | 720bce5e62acd0db90547c2cfad08f5fa70ac902 |
| SHA256 | 0fd7bedeb4cd6e9976aedba249e66e613b15a27ef1ee2eea7bec2bfd7a9c650c |
| SHA512 | c40b4dafe2b0aa7a220fad1ab83b3f93059474f1f9259a1c4c90e13b4fc9637d5457af11d5ca73205663c6e7ae2afdb42aac7e615df4ebbcee9e55bafe7ed5dd |
C:\Users\Admin\AppData\Local\Temp\Cab7C32.tmp
| MD5 | 49aebf8cbd62d92ac215b2923fb1b9f5 |
| SHA1 | 1723be06719828dda65ad804298d0431f6aff976 |
| SHA256 | b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f |
| SHA512 | bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-10 03:49
Reported
2024-08-10 03:52
Platform
win10v2004-20240802-en
Max time kernel
133s
Max time network
153s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d41ca5c6-ce65-4178-a2d9-e93600f47eb0\\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.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 |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\icacls.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\d41ca5c6-ce65-4178-a2d9-e93600f47eb0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-10_258b365aa910c2560eee37b70df27656_stop.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 | c.pki.goog | udp |
| NL | 142.250.179.131:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 131.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | uaery.top | udp |
| US | 8.8.8.8:53 | drampik.com | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drampik.com | udp |
| US | 8.8.8.8:53 | drampik.com | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | drampik.com | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
Files
C:\Users\Admin\AppData\Local\d41ca5c6-ce65-4178-a2d9-e93600f47eb0\2024-08-10_258b365aa910c2560eee37b70df27656_stop.exe
| MD5 | 258b365aa910c2560eee37b70df27656 |
| SHA1 | 117e38e9ea29f84128ab63e03c3694fc1acc5eec |
| SHA256 | ca6794679dc6c84aa9870304229cbbbcd4a6c97149bb8bb1fc01912a64d17e2c |
| SHA512 | 7ca59107ca25875651d27dfedc6cb0af1528e6cd32d237c4e7986112b9065567ad96784d57bef9ce4b67258bdc04943d1b864fdd1de278d34fea54ec2745e328 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 971c514f84bba0785f80aa1c23edfd79 |
| SHA1 | 732acea710a87530c6b08ecdf32a110d254a54c8 |
| SHA256 | f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895 |
| SHA512 | 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | dccfc76b23de7d8992b506e0bfcadd22 |
| SHA1 | a033109058a24fa78aa067a4c62b0c5f1821f0a7 |
| SHA256 | 3c21063f50fcaf076358fe027fb9f58ebfa65cfc2d99a5576b1482b472ba7324 |
| SHA512 | f03e6e13215fa64a48155c1a262e0976d0465108426975e552389e4cccf2aa6ef278be8fb4bcdd3c584fbf72134da4eb3ee2e1657051c5cacba3fddf6b5578c2 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | 7fb5fa1534dcf77f2125b2403b30a0ee |
| SHA1 | 365d96812a69ac0a4611ea4b70a3f306576cc3ea |
| SHA256 | 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f |
| SHA512 | a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | a37cb0bb827c63939180cbc92f0a438c |
| SHA1 | 9be393f18f708c2919dbd3fc34c9b96253a4a55a |
| SHA256 | 2f44f23d55342967b1bae4289fe4531cb6273a34dc13d81962c1b4ee81e148ab |
| SHA512 | 0bea92f2431909490c293b04c01cb0583bcb51f1298c5749081413a9f90a1656dcd0436e8858bf9cc5c86cdedbde93a64fd7b726894a3f94c1e1866c86d81dde |