Analysis Overview
SHA256
bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99
Threat Level: Known bad
The file bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Vidar
Detected Djvu ransomware
Downloads MZ/PE file
Executes dropped EXE
Reads user/profile data of web browsers
Modifies file permissions
Loads dropped DLL
Checks computer location settings
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Checks processor information in registry
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-11-30 19:27
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-11-30 19:27
Reported
2022-11-30 19:29
Platform
win10v2004-20220812-en
Max time kernel
82s
Max time network
151s
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\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\984637f1-7ae6-4b89-b01d-1ad511562604\\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.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 4956 set thread context of 4856 | N/A | C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe | C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe |
| PID 1836 set thread context of 4464 | N/A | C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe | C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe |
| PID 1492 set thread context of 4144 | N/A | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\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\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\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\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe
"C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe"
C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe
"C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\984637f1-7ae6-4b89-b01d-1ad511562604" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe
"C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe
"C:\Users\Admin\AppData\Local\Temp\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe
"C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe"
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe
"C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe"
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build3.exe
"C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\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\7e162788-6d6b-4561-b4b2-115c13ba08e1\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 | 104.80.225.205:443 | tcp | |
| N/A | 8.8.8.8:53 | api.2ip.ua | udp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 52.182.143.211:443 | 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 | 211.119.84.112:80 | fresherlights.com | tcp |
| N/A | 201.124.230.1:80 | fresherlights.com | tcp |
| N/A | 201.124.230.1:80 | 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 | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 93.184.221.240:80 | tcp |
Files
memory/4956-132-0x00000000020EF000-0x0000000002181000-memory.dmp
memory/4956-133-0x00000000022A0000-0x00000000023BB000-memory.dmp
memory/4856-134-0x0000000000000000-mapping.dmp
memory/4856-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4856-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4856-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4856-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4980-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\984637f1-7ae6-4b89-b01d-1ad511562604\bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99.exe
| MD5 | 1f0d8a1cf1e20def4144395d5864e155 |
| SHA1 | 2d9002a2a89d11eee290c6553580bedbdb5c67e2 |
| SHA256 | bca769d22e45023670f3ad3400433d0d78dd623c110011c4b190d8008151cf99 |
| SHA512 | 60a8ae177e1ae633ff216a2c42f0df8aa57e697e552cf94ca750e749d21466260cbf2eaa64dccb12c7bd1d51935d634c2b048e5f01e405a81fb3c46c0d9be692 |
memory/1836-141-0x0000000000000000-mapping.dmp
memory/4856-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4464-143-0x0000000000000000-mapping.dmp
memory/4464-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1836-146-0x0000000002133000-0x00000000021C5000-memory.dmp
memory/4464-147-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 76e7d5bf61b2e80d159f88aa9798ce91 |
| SHA1 | 32a46de50c9c02b068e39cf49b78c7e2d5ace20d |
| SHA256 | 280fd6ae3ad21323199759814c4dd82329eb8f9847ed1fa2be145e83b4c88bf3 |
| SHA512 | 5efd8c64ac40ae006d2ce4509eb9e5f1448fb1156e914d303e8bc4dcfe1d94c57c7eae216b362877e7b644876656cc9e5c4cebfc905bab3f8b09cb1a051d69c4 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 16759efba4db0b47db721212e33f0a62 |
| SHA1 | 6ae867d17777b6ef030d9a2c0ad88ba2367daa30 |
| SHA256 | b6de2908634f192d837ce832a78c858c414f9e83979198cc2b03285a9fccd40b |
| SHA512 | 2371a214a0c4ac4e8992426df07ae63a9a751af73e478f70b477bf2f3747a992d51a89fa5ebe2b250d3edd5580f7e588a242719953336fd58163dea69d733bad |
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 | 392b83bb57824ad1c68e31a9d2e6d3a2 |
| SHA1 | 2621162e9bc22d06c48637907efd86c24617d86b |
| SHA256 | 7302e176d370cd889c7a50dbf5c052c307cf95d731579b42ec5f61c072ef944b |
| SHA512 | 773c91df43b03a5dddc56ef2f17ae06902463be1a6c33e15d04f4fd00787a2e0f43f939a443201c5a81c8e40bf8300c432e885e4e2bfed5b87767728dfe4af91 |
memory/4464-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1492-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/4144-156-0x0000000000000000-mapping.dmp
memory/4144-157-0x0000000000400000-0x000000000045F000-memory.dmp
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/1492-159-0x000000000079D000-0x00000000007C9000-memory.dmp
memory/4144-160-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4144-162-0x0000000000400000-0x000000000045F000-memory.dmp
memory/1492-161-0x00000000006F0000-0x000000000073B000-memory.dmp
memory/2332-163-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\7e162788-6d6b-4561-b4b2-115c13ba08e1\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4144-166-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4772-167-0x0000000000000000-mapping.dmp
memory/4144-168-0x0000000061E00000-0x0000000061EF3000-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/4464-188-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2120-189-0x0000000000000000-mapping.dmp
memory/4144-190-0x0000000000400000-0x000000000045F000-memory.dmp
memory/3396-191-0x0000000000000000-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/3304-194-0x0000000000000000-mapping.dmp