Analysis Overview
SHA256
2a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84
Threat Level: Known bad
The file 66d5df681876c_file010924.exe 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
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Checks SCSI registry key(s)
Suspicious use of SendNotifyMessage
Suspicious behavior: GetForegroundWindowSpam
Modifies registry class
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-02 17:02
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-02 17:02
Reported
2024-09-02 17:03
Platform
win10v2004-20240802-en
Max time kernel
59s
Max time network
48s
Command Line
Signatures
Detected Djvu ransomware
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Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\fedd7e38-48c6-4ab8-bd3d-a2c35c1bd3ca\\66d5df681876c_file010924.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.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 |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1992 set thread context of 2880 | N/A | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe |
| PID 3824 set thread context of 516 | N/A | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe |
| PID 4160 set thread context of 3808 | N/A | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.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\66d5df681876c_file010924.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.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\66d5df681876c_file010924.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe | N/A |
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000_Classes\Local Settings | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\fedd7e38-48c6-4ab8-bd3d-a2c35c1bd3ca" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"
C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe
"C:\Users\Admin\AppData\Local\Temp\66d5df681876c_file010924.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 188.114.97.0:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 216.58.201.99:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.201.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.97.114.188.in-addr.arpa | udp |
| US | 188.114.97.0:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| MA | 196.65.240.24:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 24.240.65.196.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 188.114.97.0:443 | api.2ip.ua | tcp |
Files
memory/1992-1-0x00000000023C0000-0x000000000245C000-memory.dmp
memory/1992-2-0x00000000024B0000-0x00000000025CB000-memory.dmp
memory/2880-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2880-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2880-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2880-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\fedd7e38-48c6-4ab8-bd3d-a2c35c1bd3ca\66d5df681876c_file010924.exe
| MD5 | 7972b08246e568495d9d116fc2d0b159 |
| SHA1 | 3e12225494f08369858453fd9fc7481b4f788165 |
| SHA256 | 2a6c90c8db27e6ac04c7e339dfe4b3c2d47a292bcf6fc1c5b4e0ae62fc81ff84 |
| SHA512 | f0ead246f31d1badb3cd5fd67cb5b3081f027fdad44dd50364734d61722f1bc2cacb1ad5d842ca3f7000a2699e7bdf059a508b54a95f5e155ae274d70e833ff7 |
memory/2880-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3824-19-0x0000000000400000-0x000000000065D000-memory.dmp
memory/516-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3824-22-0x0000000000400000-0x000000000065D000-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 | a5b6fecf46baec7fdf655b7aea0c2faa |
| SHA1 | 35cbee6433e30bdf0fbf0b13238c5ac3808a06cd |
| SHA256 | 1ff167eaf773fb150acf3bd21c32ce07aeb3cacc83b7138b9a4fb5492804622d |
| SHA512 | 3106755e6c48dc14a65749aa7ac2f97c8ac54840d8247b830fd850f20a9833b8c022d56329d7f8b9801c6f6fe83c383fe075f2ae24caf969a3c345261167ddfd |
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 | 0f26add1d3377c7496a3ecebe543d2ab |
| SHA1 | c58269aec800d04eb26363e3f9d5f9bd9df45bf2 |
| SHA256 | 705ea15f544b431149b346146c2dee22311e915b4918ee927ed26a0b9fd177ba |
| SHA512 | 104e2e926ae7e5144d99de28ca69a080da0b4c0f0304939c9b8c7ca04c7555d718e8272baa88ae9db25e653428f33fa50a93472a04ef6f1c9b1551dbd6b0d4f6 |
memory/516-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/516-40-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1484-41-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-43-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-42-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-53-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-52-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-51-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-50-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-49-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-48-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/1484-47-0x00000298903C0000-0x00000298903C1000-memory.dmp
memory/516-54-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3808-60-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3808-61-0x0000000000400000-0x0000000000537000-memory.dmp