Analysis Overview
SHA256
b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476
Threat Level: Known bad
The file b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Vidar
Downloads MZ/PE file
Executes dropped EXE
Modifies file permissions
Reads user/profile data of web browsers
Checks computer location settings
Loads dropped DLL
Adds Run key to start application
Accesses cryptocurrency files/wallets, possible credential harvesting
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
Delays execution with timeout.exe
Creates scheduled task(s)
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-07 17:19
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-07 17:19
Reported
2023-01-07 17:21
Platform
win10v2004-20221111-en
Max time kernel
66s
Max time network
145s
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\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\fec02ac5-9b8e-423e-ad86-4957ae4d044a\\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.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 4824 set thread context of 5056 | N/A | C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe | C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe |
| PID 896 set thread context of 4044 | N/A | C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe | C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe |
| PID 328 set thread context of 4884 | N/A | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\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\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\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\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe
"C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe"
C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe
"C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\fec02ac5-9b8e-423e-ad86-4957ae4d044a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe
"C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe
"C:\Users\Admin\AppData\Local\Temp\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe
"C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe"
C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build3.exe
"C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\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\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe
"C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\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 | 187.170.238.164:80 | uaery.top | tcp |
| N/A | 175.119.10.231:80 | spaceris.com | tcp |
| N/A | 175.119.10.231:80 | 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 | 67.27.153.254:80 | tcp | |
| N/A | 104.80.225.205:443 | tcp | |
| N/A | 67.27.153.254:80 | tcp |
Files
memory/5056-132-0x0000000000000000-mapping.dmp
memory/5056-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5056-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4824-135-0x0000000004CB8000-0x0000000004D49000-memory.dmp
memory/4824-136-0x0000000004E30000-0x0000000004F4B000-memory.dmp
memory/5056-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5056-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2596-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\fec02ac5-9b8e-423e-ad86-4957ae4d044a\b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476.exe
| MD5 | 2080cbf9fbe0b8c5cabfc891d7af148b |
| SHA1 | 0e0b8cf19825b0caae1a261ff4a401c2bf9f8e1b |
| SHA256 | b5c94d4c2b63ec785176f78f83c8bdc91a508bf36c5a36b88fbe87b88679b476 |
| SHA512 | 6a62e1d5bdf65ae5b879ec3098890a0ba6796d5c24dd393b80724aea846e5597c8dbe85d54978279ab05ea04dac63c9ea8ba19663d98a8fdf9cf0d5e6f04892f |
memory/896-141-0x0000000000000000-mapping.dmp
memory/5056-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4044-143-0x0000000000000000-mapping.dmp
memory/4044-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4044-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/896-146-0x0000000004DB4000-0x0000000004E45000-memory.dmp
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\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 53008585cc09af0bcf9c69017db1f787 |
| SHA1 | c7558f96e412b7c829f11e02b65c0b2b4d34e8f3 |
| SHA256 | cdcb08d1a7ca085c9df25aca00dfed6216a08ddd2a4990a46fc89fbddf8ba748 |
| SHA512 | f3e7672148b57d5bc7be382ee815e02874a94b0ed447cf95f192b54724263ad612e4bc9e06e933331e668264b9a406dbbc734017ec91065437b0464f28f36907 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 411cd537dcecbf901759b8e6c1bdb076 |
| SHA1 | 655df9870867a1760ad1a2c967b330c61767437a |
| SHA256 | aa9e441c6cf813efd9ba76fe4ae52d884a5c7d222ed221903c42f09bc14eb7db |
| SHA512 | ea780f875c86f8694f67d236a0af066b952862356edb681375e6c387103a91ce085345359f8fe83dd630d310ee6b7637512e5868951c4c257daa411ab9c03e71 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 437068a66bed58ea9d470c5b83a04a97 |
| SHA1 | 97f30854418182e430444ffe4170974ff4d6f568 |
| SHA256 | f54b5c913524c4cb76e59e11bbbf1fda9acab978d6763e3ac90e22aed1cbbff1 |
| SHA512 | e90479e859c38b0c1745faf64d8cda9e0c023c5fe18706a132f7805429bb2e4411952ec8c57fbf20dfb9847310884da35fe55de1d84397c13d7138cae4b216f8 |
memory/4044-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/328-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
memory/3904-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1984-159-0x0000000000000000-mapping.dmp
memory/4884-160-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\100e962e-13d2-40db-8321-7c3decf0ce23\build2.exe
| MD5 | 8c14bb1505244971374a88f37a4ec22a |
| SHA1 | cebd478fd7ca3956c983fb3e33e2cbb7c54fa4d0 |
| SHA256 | f333289bf29805ee697908ecb974aeb81206b471252ec2e51f382d53ac35d962 |
| SHA512 | 5e08686f2cbc783716442004d39ee11a4fabec7aaa92f33f758df7861ed0730c211551ecb85dd9dc93c2b83983fc4df08bcfeeb38c9e51bd3dcd138b10cf103e |
memory/4884-161-0x0000000000400000-0x0000000000460000-memory.dmp
memory/328-164-0x00000000004C8000-0x00000000004F6000-memory.dmp
memory/4884-163-0x0000000000400000-0x0000000000460000-memory.dmp
memory/328-166-0x00000000020E0000-0x000000000212C000-memory.dmp
memory/4884-165-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4884-167-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4044-168-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4884-169-0x0000000050AC0000-0x0000000050B52000-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/4884-190-0x0000000000400000-0x0000000000460000-memory.dmp
memory/4168-191-0x0000000000000000-mapping.dmp
memory/4884-192-0x0000000000400000-0x0000000000460000-memory.dmp
memory/2832-193-0x0000000000000000-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/3560-196-0x0000000000000000-mapping.dmp