Analysis Overview
SHA256
aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec
Threat Level: Known bad
The file aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Vidar
Djvu Ransomware
Downloads MZ/PE file
Executes dropped EXE
Modifies file permissions
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Checks installed software on the system
Accesses 2FA software files, possible credential harvesting
Adds Run key to start application
Accesses cryptocurrency files/wallets, possible credential harvesting
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-11 11:01
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-11 11:01
Reported
2022-10-11 11:04
Platform
win10v2004-20220812-en
Max time kernel
94s
Max time network
132s
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\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2c463238-a9a9-4fd0-a369-40be0820d42c\\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.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 4952 set thread context of 5000 | N/A | C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe | C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe |
| PID 3952 set thread context of 4040 | N/A | C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe | C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe |
| PID 2940 set thread context of 2876 | N/A | C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe | C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\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\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\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 |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
"C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe"
C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
"C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\2c463238-a9a9-4fd0-a369-40be0820d42c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
"C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
"C:\Users\Admin\AppData\Local\Temp\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe
"C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe"
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe
"C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe"
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.exe
"C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\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\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 |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 93.184.220.29:80 | tcp | |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | rgyui.top | udp |
| US | 8.8.8.8:53 | winnlinne.com | udp |
| KW | 37.34.248.24:80 | rgyui.top | tcp |
| KR | 175.126.109.15:80 | winnlinne.com | tcp |
| KR | 175.126.109.15:80 | winnlinne.com | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 23.88.115.141:80 | 23.88.115.141 | tcp |
| US | 20.189.173.10:443 | tcp | |
| BE | 8.238.110.126:80 | tcp |
Files
memory/4952-132-0x0000000002281000-0x0000000002312000-memory.dmp
memory/4952-133-0x00000000023F0000-0x000000000250B000-memory.dmp
memory/5000-134-0x0000000000000000-mapping.dmp
memory/5000-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5000-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5000-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5000-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2012-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\2c463238-a9a9-4fd0-a369-40be0820d42c\aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec.exe
| MD5 | 88323df0df755d5d667684caddf84bbb |
| SHA1 | add6505387ca1dd1b6b4a9526bb01e30439d5bf2 |
| SHA256 | aba31382892dbc8c9f730b63338fc1e422f2b4f2770d914592e6a2e6517e42ec |
| SHA512 | 886ca96e229d7fbb67bfbec0916fb11621ada62c7a76762f1dba9ee5408f9a2e067c91e617f2837fc3c675c7f42b630daac63a48061383a9f95bd9c574bdadcb |
memory/3952-141-0x0000000000000000-mapping.dmp
memory/5000-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4040-143-0x0000000000000000-mapping.dmp
memory/3952-146-0x00000000022D9000-0x000000000236A000-memory.dmp
memory/4040-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4040-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4040-148-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 0698dbc93ba7b6bef73ba316695f8317 |
| SHA1 | a444078ff1eb7c88f52cb4e324365926b491ed47 |
| SHA256 | 263292040d77903899257c1d21201dc64d6f8d6b5a1d945cd5b28d0124d7906c |
| SHA512 | ebacaa7009aebb88199cd70fd0bb3afe69ed300318cb633edd1c0404e42aef829617f589bcbad6cb7ab4bd0a8ae87f7df1435c786184ecc5de61c8fc6950a900 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | f8bb7f2d76c5404b78352360c1b13dc0 |
| SHA1 | 953755b4206d97786b3a3512f0183ce16d60d42a |
| SHA256 | 620c704a1e72ece2435dc0c5133b17e2f92edca923ec5caa812332b2d2708240 |
| SHA512 | f573f5002a382f3dc29a7a881dc036d10db2a2f83439027dd6de2428f3262df57aa6a820577e73b37a0fc96acbf6b64cc54e99feb06ce1d1ce03af43130da52f |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 6f59ed058aa06aaf5ec6213b955aabd4 |
| SHA1 | baf7b828a563b8fb6111e4ce35e0055575ad80b4 |
| SHA256 | 2d82e2629fa2e08f28b43b15da43dff56c7f4b23b39d66109c7c61998e35b4d5 |
| SHA512 | 6b0f041dafb98b9eaf70ac0d20a98c56e1c42231c4a4ae6e11582b20d20bf8f96dfd7747739a10d77368994441adb0e181b356f8569697b1f22ab4fe931170ce |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | f70a7a6f44d15ac1af85c4c608effd1f |
| SHA1 | 2ffe6ad154bc245208a281f436aa5282164bef62 |
| SHA256 | b6025df06eb0822b60b4924e70af501788e402ea5d5b799335cc4a4c24e2287c |
| SHA512 | 0a84babce6ced4da79e7efbfce62b4b7904fa271b22e0d1c1020f1dabb3bc81c2eef6c6d971fe60572721e76b62bb8c77686db9760e632ea3e21849725e99f82 |
memory/2940-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe
| MD5 | 9c3d4324a153c6438f48083bc333a962 |
| SHA1 | 033e80e2008f4f62d2716ce0473bb0d763d52277 |
| SHA256 | 5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98 |
| SHA512 | 8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd |
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe
| MD5 | 9c3d4324a153c6438f48083bc333a962 |
| SHA1 | 033e80e2008f4f62d2716ce0473bb0d763d52277 |
| SHA256 | 5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98 |
| SHA512 | 8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd |
memory/2876-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build2.exe
| MD5 | 9c3d4324a153c6438f48083bc333a962 |
| SHA1 | 033e80e2008f4f62d2716ce0473bb0d763d52277 |
| SHA256 | 5ee57d85a41b825060864ae85981253f28148d15586a5f6274d562dfeae93e98 |
| SHA512 | 8cce276e59b2fcdb333fecaaa1e3ab9d0b24e25c54a6fc959b6c190441061fab67ea0d35e7077cf910b557b6a60b90c1d2260352b11789bbcd430814fcff51cd |
memory/2876-157-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2940-159-0x000000000082D000-0x0000000000858000-memory.dmp
memory/2876-162-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2940-161-0x00000000006E0000-0x000000000072A000-memory.dmp
memory/2876-163-0x0000000000400000-0x000000000045E000-memory.dmp
memory/5044-164-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\bb78891e-0cd3-42ba-b5e0-3db7aa34dbaf\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1512-167-0x0000000000000000-mapping.dmp
memory/2876-168-0x0000000061E00000-0x0000000061EF3000-memory.dmp
C:\ProgramData\nss3.dll
| MD5 | 1cc453cdf74f31e4d913ff9c10acdde2 |
| SHA1 | 6e85eae544d6e965f15fa5c39700fa7202f3aafe |
| SHA256 | ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5 |
| SHA512 | dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571 |
C:\ProgramData\mozglue.dll
| MD5 | c8fd9be83bc728cc04beffafc2907fe9 |
| SHA1 | 95ab9f701e0024cedfbd312bcfe4e726744c4f2e |
| SHA256 | ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a |
| SHA512 | fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040 |
memory/4040-188-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2876-189-0x0000000000400000-0x000000000045E000-memory.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/3180-192-0x0000000000000000-mapping.dmp