Analysis Overview
SHA256
f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436
Threat Level: Known bad
The file f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
Vidar
Downloads MZ/PE file
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Modifies file permissions
Checks installed software on the system
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Delays execution with timeout.exe
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-07 19:54
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-07 19:54
Reported
2023-01-07 19:56
Platform
win10v2004-20220901-en
Max time kernel
70s
Max time network
143s
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\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\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\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.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\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.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\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\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\\eda885ce-3048-4d29-9cdd-7584019f8931\\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.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 1368 set thread context of 2116 | N/A | C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe | C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe |
| PID 4664 set thread context of 3676 | N/A | C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe | C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe |
| PID 3124 set thread context of 732 | N/A | C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe | C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\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\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\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\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe
"C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe"
C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe
"C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\eda885ce-3048-4d29-9cdd-7584019f8931" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe
"C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe
"C:\Users\Admin\AppData\Local\Temp\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe
"C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe"
C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build3.exe
"C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\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:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe
"C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\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 | spaceris.com | udp |
| N/A | 222.236.49.124:80 | uaery.top | tcp |
| N/A | 211.40.39.251:80 | spaceris.com | tcp |
| N/A | 211.40.39.251:80 | spaceris.com | tcp |
| N/A | 8.8.8.8:53 | t.me | udp |
| N/A | 149.154.167.99:443 | t.me | tcp |
| N/A | 94.130.190.48:80 | 94.130.190.48 | 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/2116-132-0x0000000000000000-mapping.dmp
memory/1368-135-0x0000000004CDC000-0x0000000004D6D000-memory.dmp
memory/2116-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1368-137-0x0000000004DA0000-0x0000000004EBB000-memory.dmp
memory/2116-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2116-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/552-138-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\eda885ce-3048-4d29-9cdd-7584019f8931\f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436.exe
| MD5 | c827541c3b3193f57eb48426693a9211 |
| SHA1 | 99f08ceaf7be61555930d0ff3c8501dea010796f |
| SHA256 | f5ad92e1cc41f1e8fe93938b3917c5b8addf424d59a781d313bb06fe7809b436 |
| SHA512 | f03a4bda0f8ebfc060976ce3bcf30ab4200a17f2c32405b3ed85586d5c3719f2166de00e79de00159fac2e0a767d259fe6d3efca6abd4511884edfe8560041cc |
memory/2116-140-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2116-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4664-141-0x0000000000000000-mapping.dmp
memory/3676-143-0x0000000000000000-mapping.dmp
memory/3676-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4664-147-0x0000000004DF5000-0x0000000004E86000-memory.dmp
memory/3676-146-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 848e3720d6f9453b95c7c5a961ee3026 |
| SHA1 | 53179b45228e73ad68682d45d8c7fc6efcf64469 |
| SHA256 | 7756029a6bcab70df42cce96da9732d27edd9ebd23ad643b53c9d296b2e5bb6a |
| SHA512 | fed0954771c22879015ccc8b69e30b82113dc8000ed2bf0f9f557a200c1d505a8091548de607515130b2ea52ed6f43d9a461ce0fda8ba3860086b441f09a646b |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 7c56401cb6bd1ae402e06f0fe35f81c4 |
| SHA1 | b82bbb9fa39266796cafcd308ef4300fc92e3399 |
| SHA256 | 0c58c7bc18d38a3096da6f3575f1c6f8d79b69382d8e89bb5fca917d3cdb7f65 |
| SHA512 | 2ea607c2dc04c8ef34ecb4c4bd297e0f0882b179303565863d1745172322133b78186fa04334e82c135e25fd717719ceec917f49682a4eac37034ea87bb2b6f3 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 1fd377ab12a8eb0fec91cfb6f9ddaa9c |
| SHA1 | 5fa717be4aef8acd939390927f71faae978a586b |
| SHA256 | 9c6aa0c697d4638cc5fe050555b47a353a4d445b3c547b5202b0ab86f9ed7a46 |
| SHA512 | 3377fee9027ed85cf94f760d0a33b7813f5dbeccd7a412f924fe2b7bee221d2aa36029a512669724ac62dead1ab927e59aea5a0ff5fb48f5d139c30ca5bb4340 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 411cd537dcecbf901759b8e6c1bdb076 |
| SHA1 | 655df9870867a1760ad1a2c967b330c61767437a |
| SHA256 | aa9e441c6cf813efd9ba76fe4ae52d884a5c7d222ed221903c42f09bc14eb7db |
| SHA512 | ea780f875c86f8694f67d236a0af066b952862356edb681375e6c387103a91ce085345359f8fe83dd630d310ee6b7637512e5868951c4c257daa411ab9c03e71 |
memory/3676-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3124-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
memory/4824-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4500-159-0x0000000000000000-mapping.dmp
memory/732-160-0x0000000000000000-mapping.dmp
memory/732-161-0x0000000000400000-0x0000000000460000-memory.dmp
memory/732-163-0x0000000000400000-0x0000000000460000-memory.dmp
memory/3124-164-0x0000000000618000-0x0000000000646000-memory.dmp
memory/3124-166-0x00000000020A0000-0x00000000020EC000-memory.dmp
memory/732-165-0x0000000000400000-0x0000000000460000-memory.dmp
C:\Users\Admin\AppData\Local\c4c9ce92-9d2c-4c90-b15b-0b57e5849665\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
memory/732-167-0x0000000000400000-0x0000000000460000-memory.dmp
memory/3676-168-0x0000000000400000-0x0000000000537000-memory.dmp
memory/732-169-0x00000000509B0000-0x0000000050A42000-memory.dmp
C:\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
C:\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |
memory/732-190-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4992-191-0x0000000000000000-mapping.dmp
memory/732-192-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4784-193-0x0000000000000000-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/2648-196-0x0000000000000000-mapping.dmp