Analysis Overview
SHA256
16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f
Threat Level: Known bad
The file 16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f 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
Modifies file permissions
Reads user/profile data of web browsers
Checks computer location settings
Checks installed software on the system
Adds Run key to start application
Accesses 2FA software files, possible credential harvesting
Looks up external IP address via web service
Accesses cryptocurrency files/wallets, possible credential harvesting
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
Checks processor information in registry
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-12-01 07:40
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-12-01 07:40
Reported
2022-12-01 07:43
Platform
win10v2004-20220901-en
Max time kernel
82s
Max time network
147s
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\78a86052-9268-4c00-8659-5048ec750431\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\de480a0e-ec30-4ba5-86ac-4c2b5b60ccff\\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.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 |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4844 set thread context of 3400 | N/A | C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe | C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe |
| PID 536 set thread context of 2300 | N/A | C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe | C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe |
| PID 732 set thread context of 432 | N/A | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\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\78a86052-9268-4c00-8659-5048ec750431\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\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\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe
"C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe"
C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe
"C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\de480a0e-ec30-4ba5-86ac-4c2b5b60ccff" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe
"C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe
"C:\Users\Admin\AppData\Local\Temp\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe
"C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe"
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build3.exe
"C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build3.exe"
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe
"C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.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\78a86052-9268-4c00-8659-5048ec750431\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 | 8.8.8.8:53 | api.2ip.ua | udp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 8.8.8.8:53 | uaery.top | udp |
| N/A | 8.8.8.8:53 | fresherlights.com | udp |
| N/A | 175.120.254.9:80 | fresherlights.com | tcp |
| N/A | 37.34.248.24:80 | fresherlights.com | tcp |
| N/A | 37.34.248.24:80 | 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 | 116.203.0.170:80 | 116.203.0.170 | tcp |
| N/A | 72.21.91.29:80 | tcp | |
| N/A | 20.42.73.24:443 | tcp | |
| N/A | 2.18.109.224:443 | tcp | |
| N/A | 87.248.202.1:80 | tcp | |
| N/A | 88.221.25.155:80 | tcp |
Files
memory/3400-132-0x0000000000000000-mapping.dmp
memory/3400-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4844-135-0x0000000000643000-0x00000000006D5000-memory.dmp
memory/3400-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4844-137-0x00000000022B0000-0x00000000023CB000-memory.dmp
memory/3400-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3400-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1516-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\de480a0e-ec30-4ba5-86ac-4c2b5b60ccff\16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f.exe
| MD5 | 6cab78f8173df9461b7e2401ab0da788 |
| SHA1 | b50904336592c1c6e3be15ba5212a0e46ab03876 |
| SHA256 | 16d7f067fb0ba88d9de2cfedebccda350ad275d13e648193fc5df8a79935b72f |
| SHA512 | 61366e896510edc2dd9a76a758894bf28fbe08064c7581971e45f67628257ad2d475621f46a6d074f64339cbb27c651f3f31b2fc57bf7d945021530204efa3bb |
memory/536-141-0x0000000000000000-mapping.dmp
memory/3400-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2300-143-0x0000000000000000-mapping.dmp
memory/536-146-0x000000000212D000-0x00000000021BF000-memory.dmp
memory/2300-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2300-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2300-148-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 61ffe15234088bd43d27e9eb101ad1f6 |
| SHA1 | 80e8cf2dbbf66018e148cbab446cfc5e52eed1b2 |
| SHA256 | 1dc492a98f81cf0473e5ebc17c9284892b88c592b5194c31761a1ef1985c59b5 |
| SHA512 | f925dbd2d421bc596f344241ce915b69e8f9a5112f4b9d6e62c82a717493ce2422366395dea33dfce896704b940afd6366923a7a2eb476d10563bc76de15b61d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | ddd3e3c74e4cf4a8924b5d4706aec74f |
| SHA1 | 176970cfc2890e7ddfff38d92c482369601408fb |
| SHA256 | dbd2f562366607931953bce523c712b7825ae7a69b1932038e8b062e99472a17 |
| SHA512 | 1f298b843dbacd69a985ddf68bf73638153a8b54762715f71e3ec27a8ae67110c6f2d79403372fd3225e3c2846755450dcac88f7a16d8b9e89f200cb1460e642 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 916c512d221c683beeea9d5cb311b0b0 |
| SHA1 | bf0db4b1c4566275b629efb095b6ff8857b5748e |
| SHA256 | 64a36c1637d0a111152002a2c0385b0df9dd81b616b3f2073fbbe3f2975aa4d8 |
| SHA512 | af32cffea722438e9b17b08062dc2e209edc5417418964ead0b392bd502e1a647a8456b2ee2ea59faf69f93d0c6ea6f15949b6c30924db7da65b91cb18e8dc6c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 0a57eb57dcbf5faaca66d6536eada0c2 |
| SHA1 | 949a91a16b6765f168d385cd92955639da695090 |
| SHA256 | df1160db981382ea20bebb4891fb888e63f4a535ba91862e0451314c46d8ef2c |
| SHA512 | f52b2766b81e5f46f20290f2fe7099dffeb43a3a7dd4dbfcd799089e77b1b7384953ac0318af053edb6d98ad457c9b51231fc8850e2f91950c3b25dcaeb18751 |
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/732-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/1632-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/432-159-0x0000000000000000-mapping.dmp
memory/432-160-0x0000000000400000-0x000000000045F000-memory.dmp
memory/732-163-0x000000000079C000-0x00000000007C9000-memory.dmp
C:\Users\Admin\AppData\Local\78a86052-9268-4c00-8659-5048ec750431\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/432-162-0x0000000000400000-0x000000000045F000-memory.dmp
memory/732-166-0x0000000000730000-0x000000000077B000-memory.dmp
memory/3976-165-0x0000000000000000-mapping.dmp
memory/432-164-0x0000000000400000-0x000000000045F000-memory.dmp
memory/432-167-0x0000000000400000-0x000000000045F000-memory.dmp
memory/432-168-0x0000000061E00000-0x0000000061EF3000-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/2300-188-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4108-189-0x0000000000000000-mapping.dmp
memory/432-190-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2684-191-0x0000000000000000-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/1320-194-0x0000000000000000-mapping.dmp