Analysis Overview
SHA256
78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07
Threat Level: Known bad
The file 78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Vidar
Detected Djvu ransomware
Downloads MZ/PE file
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Accesses 2FA software files, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Accesses cryptocurrency files/wallets, possible credential harvesting
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Modifies system certificate store
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-11 12:12
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-11 12:12
Reported
2022-10-11 12:15
Platform
win10v2004-20220812-en
Max time kernel
140s
Max time network
159s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Vidar
Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Reads user/profile data of web browsers
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ca978161-485f-4ea5-b699-4a59e15c3650\\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe | N/A |
Checks installed software on the system
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 |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 5096 set thread context of 3964 | N/A | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe |
| PID 2676 set thread context of 308 | N/A | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe |
| PID 4528 set thread context of 4060 | N/A | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe | N/A |
Modifies system certificate store
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 | C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe
"C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe"
C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe
"C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\ca978161-485f-4ea5-b699-4a59e15c3650" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe
"C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe
"C:\Users\Admin\AppData\Local\Temp\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe
"C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe"
C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe
"C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe"
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| NL | 104.80.225.205:443 | tcp | |
| US | 8.8.8.8:53 | crl.comodoca.com | udp |
| US | 104.18.32.68:80 | crl.comodoca.com | tcp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| NL | 104.110.191.140:80 | tcp | |
| NL | 104.110.191.140:80 | tcp | |
| US | 8.8.8.8:53 | rgyui.top | udp |
| US | 8.8.8.8:53 | winnlinne.com | udp |
| IQ | 185.95.186.58:80 | rgyui.top | tcp |
| KR | 115.88.24.203:80 | winnlinne.com | tcp |
| KR | 115.88.24.203:80 | winnlinne.com | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| KR | 115.88.24.203:80 | winnlinne.com | tcp |
| KR | 115.88.24.203:80 | winnlinne.com | tcp |
| KR | 115.88.24.203:80 | winnlinne.com | tcp |
| DE | 195.201.251.151:80 | 195.201.251.151 | tcp |
Files
memory/5096-132-0x00000000008E0000-0x0000000000971000-memory.dmp
memory/5096-133-0x0000000002340000-0x000000000245B000-memory.dmp
memory/3964-134-0x0000000000000000-mapping.dmp
memory/3964-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3964-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3964-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3964-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1220-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\ca978161-485f-4ea5-b699-4a59e15c3650\78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07.exe
| MD5 | c1487347d139d1e6b5f472c317c36c63 |
| SHA1 | a63f1ce4655bd5c25cfa4caac1e5ab0760cb7c50 |
| SHA256 | 78603455f9980bdf3601c9e2a4ecca974958d624f6d29426c7160ab49b8b5f07 |
| SHA512 | d85c759822f7de6e9ebf9276014db66783f64b1ddd41691cf78e195a03e0cd79dcd8db4925a9e455750d93da388d67c4e234857b60c11628cc6a64171aa4b5f2 |
memory/2676-141-0x0000000000000000-mapping.dmp
memory/3964-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/308-143-0x0000000000000000-mapping.dmp
memory/308-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2676-147-0x00000000022A2000-0x0000000002333000-memory.dmp
memory/308-146-0x0000000000400000-0x0000000000537000-memory.dmp
memory/308-148-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
memory/4528-149-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
memory/4060-152-0x0000000000000000-mapping.dmp
memory/4060-153-0x0000000000400000-0x0000000000463000-memory.dmp
C:\Users\Admin\AppData\Local\40728f95-c546-4760-9f7e-ba5349b1a181\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
memory/4528-155-0x000000000072D000-0x0000000000759000-memory.dmp
memory/4528-157-0x00000000021F0000-0x000000000223F000-memory.dmp
memory/4060-158-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4060-159-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4060-160-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4060-161-0x0000000061E00000-0x0000000061EF3000-memory.dmp
C:\ProgramData\nss3.dll
| MD5 | 1cc453cdf74f31e4d913ff9c10acdde2 |
| SHA1 | 6e85eae544d6e965f15fa5c39700fa7202f3aafe |
| SHA256 | ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5 |
| SHA512 | dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571 |
C:\ProgramData\mozglue.dll
| MD5 | c8fd9be83bc728cc04beffafc2907fe9 |
| SHA1 | 95ab9f701e0024cedfbd312bcfe4e726744c4f2e |
| SHA256 | ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a |
| SHA512 | fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040 |