Analysis Overview
SHA256
3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1
Threat Level: Known bad
The file file.exe 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
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-09 09:10
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-09 09:10
Reported
2024-08-09 09:15
Platform
win10v2004-20240802-en
Max time kernel
147s
Max time network
124s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\file.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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f70f890c-c25c-4eaf-b2d2-b4dd0931ff39\\file.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\file.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 4168 set thread context of 932 | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | C:\Users\Admin\AppData\Local\Temp\file.exe |
| PID 4592 set thread context of 3584 | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | C:\Users\Admin\AppData\Local\Temp\file.exe |
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\file.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\file.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\file.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f70f890c-c25c-4eaf-b2d2-b4dd0931ff39" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.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 | 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 | 131.179.250.142.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| IR | 46.100.50.5:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 5.50.100.46.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.36.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 192.142.123.92.in-addr.arpa | udp |
| US | 52.111.229.48:443 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
Files
memory/4168-1-0x00000000021A0000-0x0000000002237000-memory.dmp
memory/4168-2-0x0000000002240000-0x000000000235B000-memory.dmp
memory/932-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/932-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/932-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/932-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\f70f890c-c25c-4eaf-b2d2-b4dd0931ff39\file.exe
| MD5 | d7528cd33b73718b5949277420681f90 |
| SHA1 | 61d97f8da20ff2995890ce5f2c8a2c9e6e51c078 |
| SHA256 | 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1 |
| SHA512 | b3dab709e19a2a8bad92b259ea1739ad55564f6fe31e9f4e502b6280ae6c70cdf5a0f1fda208887da4bbcf9213986e2038abe6a09dc2940998df08d82e87d474 |
memory/932-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4592-19-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/3584-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4592-23-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/3584-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-22-0x0000000000400000-0x0000000000537000-memory.dmp
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 | e46c94a2a04b40ce158ab0fd2aaed80e |
| SHA1 | 3bfbba3ea07f70447ff7849ad6fa2ff3f825f588 |
| SHA256 | d7bbed451793dc7374de96451e221a60de5f3e4b3dd0cabfa0c26dbe7141b711 |
| SHA512 | 8fa86c62f9ca10bde05c6c3af9a29e17502712e0efde892e45fbd4beac60db0126ac3a84385b48345fb5edeb1886c81e957e23f0811fd8f6f59ef8a9e7344286 |
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 | 9df454429b04b130bfa1b74f6565c8e4 |
| SHA1 | 0d3ab58db37c483d6f0825e6a0f7acc1f09b9f61 |
| SHA256 | 86966bb95740e3088920de8318e4a7d397e40649d1cbb0d14eea189a22e0960d |
| SHA512 | 5a0e939b090f4e4e8e4b39db2728ce172ee25cf6109e3dbc22b63e9d07ca25b612242edb8968dc38fb83742453bf025ed0d527a8930dc6773b8d82f888bff64e |
memory/3584-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-40-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-09 09:10
Reported
2024-08-09 09:15
Platform
win7-20240704-en
Max time kernel
142s
Max time network
125s
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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b5e8448e-e624-44cf-b925-5579c5544271\\file.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\file.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 2852 set thread context of 2832 | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | C:\Users\Admin\AppData\Local\Temp\file.exe |
| PID 2204 set thread context of 2632 | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | C:\Users\Admin\AppData\Local\Temp\file.exe |
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\file.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\icacls.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\file.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b5e8448e-e624-44cf-b925-5579c5544271" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.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 | cajgtus.com | udp |
| MX | 187.152.11.54:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | crl.microsoft.com | udp |
| GB | 2.16.170.123:80 | crl.microsoft.com | tcp |
Files
memory/2852-0-0x0000000000540000-0x00000000005D2000-memory.dmp
memory/2852-2-0x0000000001DB0000-0x0000000001ECB000-memory.dmp
memory/2852-1-0x0000000000540000-0x00000000005D2000-memory.dmp
memory/2832-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2832-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2832-7-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2832-8-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\b5e8448e-e624-44cf-b925-5579c5544271\file.exe
| MD5 | d7528cd33b73718b5949277420681f90 |
| SHA1 | 61d97f8da20ff2995890ce5f2c8a2c9e6e51c078 |
| SHA256 | 3b8d07693e296aee36e7607c71503d981396a21b367e169146afdd052cdcf4d1 |
| SHA512 | b3dab709e19a2a8bad92b259ea1739ad55564f6fe31e9f4e502b6280ae6c70cdf5a0f1fda208887da4bbcf9213986e2038abe6a09dc2940998df08d82e87d474 |
memory/2832-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2204-29-0x0000000000360000-0x00000000003F2000-memory.dmp
memory/2204-30-0x0000000000400000-0x00000000004CA000-memory.dmp
memory/2632-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2632-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2204-36-0x0000000000400000-0x00000000004CA000-memory.dmp
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 | 8c05558018ba0b4b915aa212beab8b27 |
| SHA1 | 4974fc8cb98edc20337118e9901e94a08a2329c4 |
| SHA256 | 87e41a3ebb97930827f3419e19731d8eb3471c533ef02e1092ec080eb90dc53f |
| SHA512 | 1a0b8d70939bedeae76531da78f74e603fd7f90adf649e878619137a58e179821e1b2a237f2e06135136b93dd545796b91771f1f244f13ba290a838c515b8cd3 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | c040a9a786656861d75dd00d58751cc2 |
| SHA1 | 3528b8d0c7e45e704bc2c73fe77dfddffa8171d3 |
| SHA256 | b2a79efbf6e203d4a8c8a3f6f6fe0d8c8492a7616fee6be3f6153b698725b526 |
| SHA512 | fbb55ce7c5be966129d2598a60682570882eff29a12d678243228fc5ca3f9ddb0a63cbf6e38c7f35c4d9b0316d61afa4f500a984981fdfea517a4272192a7a9e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 971c514f84bba0785f80aa1c23edfd79 |
| SHA1 | 732acea710a87530c6b08ecdf32a110d254a54c8 |
| SHA256 | f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895 |
| SHA512 | 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58 |
C:\Users\Admin\AppData\Local\Temp\Cab708E.tmp
| MD5 | 49aebf8cbd62d92ac215b2923fb1b9f5 |
| SHA1 | 1723be06719828dda65ad804298d0431f6aff976 |
| SHA256 | b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f |
| SHA512 | bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
| MD5 | d7c83225a5725869dacbb81491a55b3d |
| SHA1 | d0cacd13a29d5f83f4756083d6b16897b8831b43 |
| SHA256 | 1a135d19ad46051c0de2d495d11ddeb2e1bda304b4a6cc5dd203dcfb5184ffdf |
| SHA512 | 5959a1ed7522cb47917d44fe482b1cb329293e1922aaaa25191148d24978e5d29d5e20bc4d6b1ef001ccaee42ebadc476642f16a8aa13c04841b7e4aef1bcfdc |
memory/2632-51-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2632-52-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2632-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2632-56-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2632-59-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2632-58-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2632-60-0x0000000000400000-0x0000000000537000-memory.dmp