Analysis Overview
SHA256
be65a8d884dbb5c292c2ae94591cc6c86909bcd7ddb42588932afaf9ce15728e
Threat Level: Known bad
The file setup.exe was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected 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
Program crash
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-29 23:00
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-29 23:00
Reported
2024-07-29 23:02
Platform
win7-20240704-en
Max time kernel
141s
Max time network
125s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1244 set thread context of 2300 | N/A | C:\Users\Admin\AppData\Local\Temp\setup.exe | C:\Users\Admin\AppData\Local\Temp\setup.exe |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\setup.exe |
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\setup.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\setup.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 264
Network
Files
memory/1244-0-0x0000000000540000-0x00000000005D2000-memory.dmp
memory/1244-1-0x0000000000540000-0x00000000005D2000-memory.dmp
memory/1244-2-0x00000000023B0000-0x00000000024CB000-memory.dmp
memory/2300-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2300-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2300-9-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2300-7-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-29 23:00
Reported
2024-07-29 23:03
Platform
win10v2004-20240709-en
Max time kernel
144s
Max time network
140s
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-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\setup.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\setup.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-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e5c8ba52-7908-4e67-9901-465cc4342d70\\setup.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\setup.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 1080 set thread context of 780 | N/A | C:\Users\Admin\AppData\Local\Temp\setup.exe | C:\Users\Admin\AppData\Local\Temp\setup.exe |
| PID 4712 set thread context of 4336 | N/A | C:\Users\Admin\AppData\Local\Temp\setup.exe | C:\Users\Admin\AppData\Local\Temp\setup.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\setup.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\setup.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\setup.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\setup.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\setup.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\setup.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\setup.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\setup.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e5c8ba52-7908-4e67-9901-465cc4342d70" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.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 |
| FR | 216.58.214.67:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.214.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.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 | zexeq.com | udp |
| DE | 188.40.141.211:80 | zexeq.com | tcp |
| DE | 188.40.141.211:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.141.40.188.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.36.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.140.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.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 |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
Files
memory/1080-1-0x0000000001F50000-0x0000000001FE9000-memory.dmp
memory/1080-2-0x00000000020D0000-0x00000000021EB000-memory.dmp
memory/780-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/780-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/780-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/780-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\e5c8ba52-7908-4e67-9901-465cc4342d70\setup.exe
| MD5 | 13fd90197ba55324bd01b9fa97f5295a |
| SHA1 | 313ac91a6ea6e75c0fe75f65d1254905491b59f6 |
| SHA256 | be65a8d884dbb5c292c2ae94591cc6c86909bcd7ddb42588932afaf9ce15728e |
| SHA512 | a2d7a2b666f712b57f1cbed89598ad783589b93d4e0b67ccbe5d8ac4f8b3faf18c704a5606953319090dbf974f5cd9bc600ee3b7695c47cc92db5d9a8227f6fb |
memory/780-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4712-21-0x0000000000400000-0x0000000000539000-memory.dmp
memory/4712-23-0x0000000000400000-0x0000000000539000-memory.dmp
memory/4336-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-26-0x0000000000400000-0x0000000000537000-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 | 534746d3effe3b93ef39b67deb99ca63 |
| SHA1 | 3c35f00af0d137b74bdd95cd16df9cd56f1b1bba |
| SHA256 | f1d78cfeeb05cde3e1fe39bdd9174bcbcb3e58bba08b906c098d233887c49e5d |
| SHA512 | 52b8eeecf7cf8dd00f771110fc2368c68cb0afc4deb78a984c14c17f8f451f35c1dbe2bce72b18b8eb69908989ec50316cd1a1fd10f1d9f3802d9f77167205a7 |
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 | 49c5ea079f6bf0dec94f9249c49c72e7 |
| SHA1 | 04cf5ed84abc142513e5ad546fa51488991d1dc0 |
| SHA256 | 21e4a339f8627abb873081c5337df3318a29a742310095f36fe0c90016830c18 |
| SHA512 | d7afde8f500aa3bc92c1e494cf1b1d2c48b59615debc7ca74d8f58fa97587c9d2079e3cbe2601aadb30a240e9b62279652573569cf9382cb8da028501584f5f4 |
memory/4336-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-34-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\b831645d-3653-4acb-8855-9538812baf2b\build3.exe
| MD5 | 6910426a598bc0b07dd6ca7c2faf5c22 |
| SHA1 | 4304d65a08652b167453997e1464cc6ef034be23 |
| SHA256 | ebfef207462c29030b8a06068c8cbf1cfeae1304813b9cdbfa2d705b314bf692 |
| SHA512 | 5e96757fa5daa336968aa07d5fe5525040a081a547dd6bad55bed4539ad76b3f96aabd38f461efdafa4a427963b2a3187cc40dfa60c74e6c6ddf738176381952 |
memory/4336-49-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-55-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\bowsakkdestx.txt
| MD5 | caa078f0348cda98328127c142e3bfed |
| SHA1 | e38274d642c806a3affcca8f7e37b61f591c47e6 |
| SHA256 | 91faeb982f34313750a83d74c5464abe4e01357d1a7ea4253973509bc0e9d219 |
| SHA512 | 2e6a5c482b5226079c6b4bd9a706537c372a3b43962f64be6bdd281e3217f963316ef0eba38164890bdf14af6558eb26605320487f0a0c841be9bb813c2ee5d6 |
memory/4336-66-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-68-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-69-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-70-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4336-72-0x0000000000400000-0x0000000000537000-memory.dmp