Analysis Overview
SHA256
7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1
Threat Level: Known bad
The file 7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Vidar
Djvu Ransomware
Vidar Stealer
Downloads MZ/PE file
Executes dropped EXE
Modifies file permissions
Reads user/profile data of web browsers
Loads dropped DLL
Checks computer location settings
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Looks up external IP address via web service
Accesses 2FA software files, possible credential harvesting
Checks installed software on the system
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Modifies system certificate store
Checks processor information in registry
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-24 01:45
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-24 01:45
Reported
2022-04-24 01:48
Platform
win10v2004-20220414-en
Max time kernel
123s
Max time network
143s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Vidar
Vidar Stealer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\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-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ee8af5e8-c64e-44db-a375-adbf968c678c\\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.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 1336 set thread context of 2436 | N/A | C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe | C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe |
| PID 2028 set thread context of 4836 | N/A | C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe | C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe |
| PID 4884 set thread context of 2768 | N/A | C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe | C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\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\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\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\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.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\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
"C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe"
C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
"C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\ee8af5e8-c64e-44db-a375-adbf968c678c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
"C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
"C:\Users\Admin\AppData\Local\Temp\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe
"C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe"
C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe
"C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe"
Network
| Country | Destination | Domain | Proto |
| BE | 8.238.110.126:80 | tcp | |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| DE | 162.0.217.254:443 | api.2ip.ua | tcp |
| DE | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | fuyt.org | udp |
| US | 8.8.8.8:53 | zerit.top | udp |
| DO | 190.166.139.153:80 | fuyt.org | tcp |
| KR | 115.88.24.202:80 | zerit.top | tcp |
| DO | 190.166.139.153:80 | fuyt.org | tcp |
| IE | 20.50.73.9:443 | tcp | |
| US | 8.8.8.8:53 | 97.97.242.52.in-addr.arpa | udp |
| KR | 210.182.29.70:80 | fuyt.org | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 116.202.1.195:80 | 116.202.1.195 | tcp |
| BE | 8.238.110.126:80 | tcp | |
| BE | 8.238.110.126:80 | tcp | |
| US | 204.79.197.203:80 | tcp | |
| US | 8.8.8.8:53 | 176.122.125.40.in-addr.arpa | udp |
| DE | 116.202.1.195:80 | 116.202.1.195 | tcp |
Files
memory/2436-130-0x0000000000000000-mapping.dmp
memory/2436-131-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2436-132-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1336-133-0x000000000226A000-0x00000000022FB000-memory.dmp
memory/1336-135-0x0000000002300000-0x000000000241B000-memory.dmp
memory/2436-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2436-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/916-137-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\ee8af5e8-c64e-44db-a375-adbf968c678c\7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1.exe
| MD5 | 30230946115d6d82a890e9e725deb161 |
| SHA1 | f03ee04320db88871b36dc45ed373fb4e43f0312 |
| SHA256 | 7a54fa6f39ec6b31f16a820c4e8b16af0d74eddea1ec0dc6bbbb97db59f7e6d1 |
| SHA512 | 47c416a43938457c71327d25c28d4afd3ec049990b24e54d4a23d2a8aed1a5d5365556d80b24a2a6e56415c4b96d71392884043a9942952ff695e343c2414d75 |
memory/2028-139-0x0000000000000000-mapping.dmp
memory/4836-140-0x0000000000000000-mapping.dmp
memory/4836-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2028-143-0x0000000000991000-0x0000000000A22000-memory.dmp
memory/4836-144-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4836-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4884-146-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/4884-149-0x00000000005D9000-0x0000000000603000-memory.dmp
memory/2768-150-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\d3289369-26e9-4f9f-aa9e-d26fe3ef31db\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/2768-151-0x0000000000400000-0x000000000044C000-memory.dmp
memory/4884-154-0x00000000005D9000-0x0000000000603000-memory.dmp
memory/4884-155-0x0000000000560000-0x00000000005A9000-memory.dmp
memory/2768-156-0x0000000000400000-0x000000000044C000-memory.dmp
memory/2768-153-0x0000000000400000-0x000000000044C000-memory.dmp
memory/2768-157-0x0000000000400000-0x000000000044C000-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 |