Analysis Overview
SHA256
77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92
Threat Level: Known bad
The file 77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Vidar
Detected Djvu ransomware
Vidar Stealer
Executes dropped EXE
Downloads MZ/PE file
Loads dropped DLL
Checks computer location settings
Modifies file permissions
Reads user/profile data of web browsers
Accesses cryptocurrency files/wallets, possible credential harvesting
Accesses 2FA software files, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-24 04:25
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-24 04:25
Reported
2022-04-24 04:27
Platform
win10v2004-20220414-en
Max time kernel
104s
Max time network
125s
Command Line
Signatures
Detected Djvu ransomware
| 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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\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-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4271602d-3010-462e-94d0-a05e0748c728\\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.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 392 set thread context of 4700 | N/A | C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe | C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe |
| PID 3684 set thread context of 3404 | N/A | C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe | C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe |
| PID 4756 set thread context of 3592 | N/A | C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe | C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\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\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\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\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.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\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
"C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe"
C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
"C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4271602d-3010-462e-94d0-a05e0748c728" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
"C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
"C:\Users\Admin\AppData\Local\Temp\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe
"C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe"
C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe
"C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\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 |
| AR | 186.182.55.44:80 | zerit.top | tcp |
| DO | 148.0.88.95:80 | zerit.top | tcp |
| DO | 148.0.88.95:80 | zerit.top | tcp |
| US | 13.89.178.26:443 | tcp | |
| US | 8.253.208.112:80 | tcp | |
| US | 8.253.208.112:80 | tcp | |
| US | 8.253.208.112:80 | 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 |
| DE | 116.202.1.195:80 | 116.202.1.195 | tcp |
Files
memory/4700-130-0x0000000000000000-mapping.dmp
memory/4700-131-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4700-132-0x0000000000400000-0x0000000000537000-memory.dmp
memory/392-133-0x0000000002260000-0x00000000022F2000-memory.dmp
memory/392-134-0x0000000002300000-0x000000000241B000-memory.dmp
memory/4700-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4700-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2100-137-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\4271602d-3010-462e-94d0-a05e0748c728\77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
| MD5 | 30024c796d61480aaf3e0cdad1b4f1c8 |
| SHA1 | 8be2e1592da6b31faf1bf36d23714ac01f989c0a |
| SHA256 | 77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92 |
| SHA512 | 89f2c54182eb42e18a3ad437193d61b92d331a075194ca31e44a0d55e13c8550917fe73910d656bd13431b0882fd0c8448f694b2e86aa5de1c70a08562760e16 |
memory/3684-139-0x0000000000000000-mapping.dmp
memory/3404-140-0x0000000000000000-mapping.dmp
memory/3684-143-0x0000000000931000-0x00000000009C3000-memory.dmp
memory/3404-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3404-144-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3404-145-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | ae80420644f9d17a1ceb04dfe52b4551 |
| SHA1 | aca7052dea384b8d31813c11839d16dcef04a4b5 |
| SHA256 | 8893c680c876c7e9a453e301b2763e4310c2fc165bcb8e6cf23ae117f6cff476 |
| SHA512 | 3f742909f7dc09e109f0eec4c245f3be76121dfdab494252eba5edb1907402cf7867cdc7595c529d3445a1676750aebbf9aba4df760ad58645aaf3d897a82a6d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 802ad2d08d8ff224fdb68ae0d4d7cd5b |
| SHA1 | 9b07d77cc6154bca20063fe71a33c38054779698 |
| SHA256 | c6c95a310058550bbd5050c4f31d32db0d74dcefe421d828ff44e3cdd11e894b |
| SHA512 | 02df8091289e76589df6798cfe71a118adeb193ef710207ad8ae8768d1be09296b4b27b3af3126d774edea4066adafc2a1a9b0325b502c8996bbad1c46fe2edd |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 4b48eeea719432bc0719653be71e6ecf |
| SHA1 | 41367524cf7d0c34d7737722cb2212558fca9938 |
| SHA256 | 2d25e68537528a81bcadb24f24afda11671512a17d04ed304cf138a30b228866 |
| SHA512 | 152b287e3d0c05f3b4dea98a20e1fc39a61008b3d5c4acc7632647bdffc090ef2ea76d4ec3a6d0cf3387c9f2f43fde1624f213908beb9583b6ad43429f551533 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 3e4ee2506b8cde1722901df234affa5d |
| SHA1 | c5f25ec4a60578d52734874ec15d209b56866bb4 |
| SHA256 | 04ff5435c54ab48feb321804124d82ba456fd91b560a47c7c27775b8e9a6a40c |
| SHA512 | 0ccb636dd71b8d26eb6c0cff2e2259bf19362edba3b790be9d81e8d2e3e7168094b57dbea420ad2c209cf5fed92c455a2705ee71fb57f6b3039e85698347da83 |
memory/4756-150-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/3592-153-0x0000000000000000-mapping.dmp
memory/3592-154-0x0000000000400000-0x000000000044C000-memory.dmp
memory/3592-156-0x0000000000400000-0x000000000044C000-memory.dmp
C:\Users\Admin\AppData\Local\fa2628c8-8833-4ddd-9ab3-83e6d3be6d6b\build2.exe
| MD5 | ad1b502b6714c0a374b055332018974b |
| SHA1 | 672f4e44475177ddcb1bfa73db3c5dee0f031bc2 |
| SHA256 | f2cfbc265125aca3cbf385120f7489e8044f444976ba43ee3a19e706257c9e95 |
| SHA512 | 0197d74e6eb9fa11d48e6939dbd091c6896908870a59fef1d40830e43caf2539fd03ac933d47eae4c3b0ec74e2bfb0ece7f44c4a525b075fe4235ca6086c355e |
memory/4756-157-0x00000000006C8000-0x00000000006F3000-memory.dmp
memory/4756-159-0x0000000000610000-0x0000000000659000-memory.dmp
memory/3592-158-0x0000000000400000-0x000000000044C000-memory.dmp
memory/3592-160-0x0000000000400000-0x000000000044C000-memory.dmp
memory/3592-161-0x0000000060900000-0x0000000060992000-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 |