Analysis Overview
SHA256
fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f
Threat Level: Known bad
The file fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Vidar
Detected Djvu ransomware
Downloads MZ/PE file
Executes dropped EXE
Loads dropped DLL
Modifies file permissions
Checks computer location settings
Reads user/profile data of web browsers
Adds Run key to start application
Accesses cryptocurrency files/wallets, possible credential harvesting
Accesses 2FA software files, possible credential harvesting
Looks up external IP address via web service
Checks installed software on the system
Suspicious use of SetThreadContext
Enumerates physical storage devices
Creates scheduled task(s)
Checks processor information in registry
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-11 19:21
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-11 19:21
Reported
2022-10-11 19:24
Platform
win10v2004-20220812-en
Max time kernel
102s
Max time network
145s
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 |
| 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
Downloads MZ/PE file
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\381af22d-4156-4346-8d4a-f801102d095f\\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.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 4724 set thread context of 4564 | N/A | C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe | C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe |
| PID 1700 set thread context of 2668 | N/A | C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe | C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe |
| PID 2228 set thread context of 4132 | N/A | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\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\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\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\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe
"C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe"
C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe
"C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\381af22d-4156-4346-8d4a-f801102d095f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe
"C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe
"C:\Users\Admin\AppData\Local\Temp\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe
"C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe"
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe
"C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe"
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build3.exe
"C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\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 |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | winnlinne.com | udp |
| US | 8.8.8.8:53 | rgyui.top | udp |
| MX | 201.124.33.150:80 | winnlinne.com | tcp |
| PE | 190.117.75.91:80 | rgyui.top | tcp |
| MX | 201.124.33.150:80 | winnlinne.com | tcp |
| US | 20.42.73.24:443 | tcp | |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 195.201.251.151:80 | 195.201.251.151 | tcp |
| US | 8.252.117.126:80 | tcp | |
| US | 8.252.117.126:80 | tcp | |
| US | 8.252.117.126:80 | tcp |
Files
memory/4724-132-0x0000000002337000-0x00000000023C8000-memory.dmp
memory/4724-133-0x00000000023D0000-0x00000000024EB000-memory.dmp
memory/4564-134-0x0000000000000000-mapping.dmp
memory/4564-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4564-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4564-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4564-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2316-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\381af22d-4156-4346-8d4a-f801102d095f\fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f.exe
| MD5 | 3644df374b725a8bfce1b3f200c8bb5f |
| SHA1 | 0e8fdbdaed40648bcc9c5c0836185f0c4be4611d |
| SHA256 | fec305f7a2c526dd2a78beeb2a9b7f5c1b3cdb1c6abdf5792f468bb9fddaf31f |
| SHA512 | 8477135815ddcc445faf6b785661744f44b9f2d2b8d00c0418c21d0fb84d724759721d00ac344166abb289c2faa78c4bdad2331553896f98d79736124eb253e0 |
memory/4564-141-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1700-142-0x0000000000000000-mapping.dmp
memory/4564-143-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2668-144-0x0000000000000000-mapping.dmp
memory/1700-147-0x0000000002291000-0x0000000002322000-memory.dmp
memory/2668-146-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2668-148-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2668-149-0x0000000000400000-0x0000000000537000-memory.dmp
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 | b1a64ecc377eada36c964f44b7f57957 |
| SHA1 | 346e9979f103479f0c95ae18bd5c4ed31151301b |
| SHA256 | 2cf420adff63afd519a865a7c1230e9dd908236b6b5e62ccde242944a796c2a7 |
| SHA512 | 68d8f0c95361a54b777c93a8a3f191d65b308ea5194f402aa5d3196f033b975b3f466b13336ac5dfefe9c41c9198df2a2420d71b6c060be0390c656c395c0b35 |
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 | 135a5e8300e055fdf1fab14d4fe34644 |
| SHA1 | bd358c05f98dcfe0053fd70d267b48a71c1588f9 |
| SHA256 | f29f4296c8dc4a5cc92eabc9e390ba780aa43e5b729378c3bd3f2fb52fcf5d56 |
| SHA512 | 54da0b825ed927b13fa2311271f0dac6c1e745a520d0a0f23afdf531c2262e87701422665e4989a047f16743e3fc4b27e817c2b6d9978c9b4f96f07b85f5839e |
memory/2228-154-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
memory/4132-157-0x0000000000000000-mapping.dmp
memory/4132-158-0x0000000000400000-0x0000000000463000-memory.dmp
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
memory/2228-162-0x00000000007FD000-0x0000000000829000-memory.dmp
memory/2228-163-0x0000000000750000-0x000000000079F000-memory.dmp
memory/4132-161-0x0000000000400000-0x0000000000463000-memory.dmp
memory/4132-164-0x0000000000400000-0x0000000000463000-memory.dmp
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1108-165-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\b56a0996-18f0-40f9-b0a7-f7a2fd1bf0a0\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4948-168-0x0000000000000000-mapping.dmp
memory/4132-169-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/2668-176-0x0000000000400000-0x0000000000537000-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/4132-190-0x0000000000400000-0x0000000000463000-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/2300-193-0x0000000000000000-mapping.dmp