Analysis Overview
SHA256
a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef
Threat Level: Known bad
The file a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef was found to be: Known bad.
Malicious Activity Summary
Vidar
Detected Djvu ransomware
Djvu Ransomware
Vidar Stealer
Downloads MZ/PE file
Executes dropped EXE
Reads user/profile data of web browsers
Loads dropped DLL
Modifies file permissions
Accesses cryptocurrency files/wallets, possible credential harvesting
Looks up external IP address via web service
Checks installed software on the system
Adds Run key to start application
Accesses 2FA software files, possible credential harvesting
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Modifies system certificate store
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-24 11:21
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-24 11:21
Reported
2022-04-24 11:24
Platform
win10-20220414-en
Max time kernel
98s
Max time network
127s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Vidar
Vidar Stealer
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\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-1-5-21-4236190499-842014725-259441995-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d55d0f6e-4753-45bc-b5af-256789faac9e\\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.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 3948 set thread context of 4248 | N/A | C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe | C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe |
| PID 2176 set thread context of 4632 | N/A | C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe | C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe |
| PID 4068 set thread context of 2228 | N/A | C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe | C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\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\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\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\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.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\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe
"C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe"
C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe
"C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\d55d0f6e-4753-45bc-b5af-256789faac9e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe
"C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe
"C:\Users\Admin\AppData\Local\Temp\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe
"C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe"
C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe
"C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe"
Network
| Country | Destination | Domain | Proto |
| 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 | zerit.top | udp |
| US | 8.8.8.8:53 | fuyt.org | udp |
| KR | 211.119.84.112:80 | fuyt.org | tcp |
| KR | 115.88.24.203:80 | zerit.top | tcp |
| KR | 211.119.84.112:80 | 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 |
| IE | 13.69.239.73:443 | tcp | |
| NL | 104.110.191.133:80 | tcp | |
| DE | 116.202.1.195:80 | 116.202.1.195 | tcp |
Files
memory/4248-118-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4248-119-0x0000000000424141-mapping.dmp
memory/3948-121-0x0000000002280000-0x000000000239B000-memory.dmp
memory/4248-120-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4248-122-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4248-123-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4644-124-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\d55d0f6e-4753-45bc-b5af-256789faac9e\a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef.exe
| MD5 | 13e5e6316c655870193bedda71103a70 |
| SHA1 | e8b48705e408f3c0e5bfe73df9da1a957afd82ff |
| SHA256 | a0136d4ba339dc4258af3ce667efae649c847a1e302d6eb0aebd9cafd94fe3ef |
| SHA512 | ac9589027b39233c47b8707bd0c0f47bb0056ed915d7e8f0d365083c3503ca72f06cfa4b9ea59b90ff341dbb59b4ea40d2a27c084023f5986bc4c085d0394ae9 |
memory/2176-126-0x0000000000000000-mapping.dmp
memory/4632-129-0x0000000000424141-mapping.dmp
memory/4632-130-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4632-131-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4632-136-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | d9c694c2d95c6812aa0be903de46da96 |
| SHA1 | df1a733a9c6c27997c798ae4c5715cabe1ffa5e4 |
| SHA256 | f6f85bc0d1770803a206fbfb83c4cb888b3a24b494feac38baa3ea764cda37c0 |
| SHA512 | 97a2eddf197aa74d1d05241008ead092f836b561bc1ad1d731d91db23d6dcce7a65d3dc1609384a3ad3fd5c858bae6c3a4361588b5a965ebf233f14410864793 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 738ea0f3212292cbfc129508bc517533 |
| SHA1 | 3f8da040f2af5127c0fb4083fbbeba152e6c9d41 |
| SHA256 | 40998457c4f6dfb74d682139a9cbcb0eb1f8acb03a5a8a37b4de90314f7840ad |
| SHA512 | 4d87e3d0c16cb07c77389689277b2a75aa1d93697c8c5f6bb6060aec35ea34e9494a059fd35733a72e97961820c1dbf526bd3a19b23514ff2077968052c1f861 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | ad8e032271f02af2a955ce10661cc3a8 |
| SHA1 | 967d1bd99bea34c3110cc75c0c0d8b8565eae9f9 |
| SHA256 | d5081bf75d530e9336a6da0f9142bc10f4d06368c365cf0e33f7c99b0f643ce8 |
| SHA512 | bc69dfb03284cf1b8d172ff55938f238b928a0c7846306d8232ab697f54c771a9acf8b0e04a85e149da87ea8cfd9395605d0d95afc30eae1793e91399aa7eef7 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 22433f41626f363de11e2392eb1f3964 |
| SHA1 | 3a14759b37c81cf37b3e106d22acf7ebe4996964 |
| SHA256 | aeee3ea54dee0d24f8d184a5787651a1b34d78fcd4dbbc902490437341cb6396 |
| SHA512 | 6fbdb5aa77c673137df4cf0f682ca89573464647483ebc9e58cf08aff31344d96731bc4d3024de58e920f73504f27bafe70b7e1bf436cd0edd6911266e101b0a |
memory/4068-137-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/2228-142-0x000000000042118A-mapping.dmp
C:\Users\Admin\AppData\Local\4bc53066-933f-4a20-a3f5-5d9c6eeca914\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/2228-144-0x0000000000400000-0x000000000044C000-memory.dmp
memory/2228-141-0x0000000000400000-0x000000000044C000-memory.dmp
memory/2228-145-0x0000000000400000-0x000000000044C000-memory.dmp
memory/2228-146-0x0000000000400000-0x000000000044C000-memory.dmp
\ProgramData\nss3.dll
| MD5 | bfac4e3c5908856ba17d41edcd455a51 |
| SHA1 | 8eec7e888767aa9e4cca8ff246eb2aacb9170428 |
| SHA256 | e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78 |
| SHA512 | 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66 |
\ProgramData\mozglue.dll
| MD5 | 8f73c08a9660691143661bf7332c3c27 |
| SHA1 | 37fa65dd737c50fda710fdbde89e51374d0c204a |
| SHA256 | 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd |
| SHA512 | 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89 |