Analysis Overview
SHA256
f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44
Threat Level: Known bad
The file f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44 was found to be: Known bad.
Malicious Activity Summary
Vidar
Djvu Ransomware
Detected Djvu ransomware
Downloads MZ/PE file
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Checks computer location settings
Modifies file permissions
Looks up external IP address via web service
Accesses 2FA software files, possible credential harvesting
Checks installed software on the system
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-11-29 20:24
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-11-29 20:24
Reported
2022-11-29 20:27
Platform
win10v2004-20220812-en
Max time kernel
148s
Max time network
174s
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\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\516e63e6-daf3-4d7c-baba-b38f90d2407a\\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.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 1172 set thread context of 4124 | N/A | C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe | C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe |
| PID 220 set thread context of 3776 | N/A | C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe | C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe |
| PID 2136 set thread context of 2192 | N/A | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\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\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe
"C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe"
C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe
"C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\516e63e6-daf3-4d7c-baba-b38f90d2407a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe
"C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe
"C:\Users\Admin\AppData\Local\Temp\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe
"C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe"
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe
"C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe"
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build3.exe
"C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build3.exe"
C:\Windows\SysWOW64\schtasks.exe
/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 6
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
C:\Windows\SysWOW64\schtasks.exe
/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 104.80.225.205:443 | tcp | |
| N/A | 8.8.8.8:53 | api.2ip.ua | udp |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 52.242.97.97:443 | tcp | |
| N/A | 8.8.8.8:53 | crl.comodoca.com | udp |
| N/A | 172.64.155.188:80 | crl.comodoca.com | tcp |
| N/A | 104.18.32.68:80 | crl.comodoca.com | tcp |
| N/A | 8.8.8.8:53 | 96.108.152.52.in-addr.arpa | udp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 8.8.8.8:53 | 7.6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.2.0.0.0.0.2.0.1.3.0.6.2.ip6.arpa | udp |
| N/A | 8.8.8.8:53 | uaery.top | udp |
| N/A | 8.8.8.8:53 | fresherlights.com | udp |
| N/A | 195.158.3.162:80 | uaery.top | tcp |
| N/A | 175.120.254.9:80 | fresherlights.com | tcp |
| N/A | 175.120.254.9:80 | fresherlights.com | tcp |
| N/A | 8.8.8.8:53 | t.me | udp |
| N/A | 149.154.167.99:443 | t.me | tcp |
| N/A | 88.198.94.71:80 | 88.198.94.71 | tcp |
Files
memory/1172-132-0x000000000218F000-0x0000000002220000-memory.dmp
memory/1172-133-0x0000000002330000-0x000000000244B000-memory.dmp
memory/4124-134-0x0000000000000000-mapping.dmp
memory/4124-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4124-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4124-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4124-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1944-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\516e63e6-daf3-4d7c-baba-b38f90d2407a\f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44.exe
| MD5 | a2e7ae4838560a38cbdbe7c67f81c36f |
| SHA1 | ed02996592a19d50d02bd65ca24d497203d0a0ad |
| SHA256 | f5419ba9c32de52d822199e4133b89fea18fc0125b8e6f18601e6de8410c4e44 |
| SHA512 | 9452b5415137470a0541496829e32074b7bd049f90c56cfe1d3d4ea203496c213af998a628e964a1d0ac3a516b0147b380f27eee7ae465c590fe3218c4b3bab2 |
memory/220-141-0x0000000000000000-mapping.dmp
memory/4124-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3776-143-0x0000000000000000-mapping.dmp
memory/220-145-0x0000000000752000-0x00000000007E3000-memory.dmp
memory/3776-146-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3776-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3776-149-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2136-150-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/2192-153-0x0000000000000000-mapping.dmp
memory/2192-154-0x0000000000400000-0x000000000045F000-memory.dmp
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/2192-157-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2136-158-0x0000000002090000-0x00000000020DB000-memory.dmp
memory/2192-159-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2136-156-0x00000000006DE000-0x000000000070A000-memory.dmp
memory/2888-161-0x0000000000000000-mapping.dmp
memory/2192-160-0x0000000000400000-0x000000000045F000-memory.dmp
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\ba2f7e71-3f73-425d-908d-9aeacc5d887b\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1064-164-0x0000000000000000-mapping.dmp
memory/2192-165-0x0000000061E00000-0x0000000061EF3000-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 |
memory/720-185-0x0000000000000000-mapping.dmp
memory/2192-186-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2632-187-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1696-190-0x0000000000000000-mapping.dmp