Analysis Overview
SHA256
e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508
Threat Level: Known bad
The file e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Vidar
Downloads MZ/PE file
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Modifies file permissions
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Adds Run key to start application
Accesses 2FA software files, possible credential harvesting
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-03-31 14:55
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-31 14:55
Reported
2023-03-31 14:58
Platform
win10-20230220-en
Max time kernel
151s
Max time network
144s
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\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\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-1-5-21-1311743041-1167936498-546579926-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\26b4f05b-f965-458f-b4b8-eff474d375a0\\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.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 2240 set thread context of 2444 | N/A | C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe | C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe |
| PID 3752 set thread context of 4920 | N/A | C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe | C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe |
| PID 1384 set thread context of 4580 | N/A | C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe | C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\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\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\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\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe
"C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe"
C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe
"C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\26b4f05b-f965-458f-b4b8-eff474d375a0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe
"C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe
"C:\Users\Admin\AppData\Local\Temp\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe
"C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe"
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe
"C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe"
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build3.exe
"C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\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:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\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 |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 254.217.0.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.18.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 188.155.64.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.3.197.209.in-addr.arpa | udp |
| NL | 162.0.217.254:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | uaery.top | udp |
| US | 8.8.8.8:53 | zexeq.com | udp |
| KR | 222.236.49.124:80 | uaery.top | tcp |
| KR | 211.119.84.112:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | 124.49.236.222.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 112.84.119.211.in-addr.arpa | udp |
| KR | 211.119.84.112:80 | zexeq.com | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 78.47.168.170:80 | 78.47.168.170 | tcp |
| US | 8.8.8.8:53 | 99.167.154.149.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 36.249.124.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 170.168.47.78.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 44.8.109.52.in-addr.arpa | udp |
Files
memory/2240-122-0x00000000023F0000-0x000000000250B000-memory.dmp
memory/2444-123-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2444-124-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2444-125-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2444-126-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\26b4f05b-f965-458f-b4b8-eff474d375a0\e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508.exe
| MD5 | f910cc242f78c2e10b50b851c09a9cf7 |
| SHA1 | 173386f55581e724622473367a0d3f354e517c5e |
| SHA256 | e28fc5c65e1ebe4357e0cd7e38d86079bfaa8a5522af12d0e1b706e0da021508 |
| SHA512 | 12f99c357d80d45d1545b2359f673c2c9e4de7300278ef0211c20d2c97cd3f1a5ba3eee6f3381709b6afcf721dd9b94351faf7867ed994e524122d71f6e3073f |
memory/2444-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4920-141-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4920-142-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | ee7ad9d8f28e0558a94e667206e8a271 |
| SHA1 | b49a079526da92d55f2d1bc66659836c0f90a086 |
| SHA256 | 9eeeef2cbd8192c6586ffa64114ad0c3e8e5ab3a73817e1044895517c6eba712 |
| SHA512 | 0c1596e7b8e54e0cce8139a339c4c34f5f9391ce0b7051673abe7a43f174f292e0d3267b1ce1186247535941b416962b6fe63cb03855ddea254cf09fddad3223 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 8f6dafb07c4ce567aace6239b17b1aea |
| SHA1 | 01ed18801fa99e52b497dbc3f02830869538daee |
| SHA256 | 5274a3b3ecae2cf6fec1b1ce8719771f00e177f0c93315b440337e26d81bcd4f |
| SHA512 | 781e2d7a0b0f1f7a1c9ab8c8fa4263b3d0b70f9f4833a4523f5917cac6d45e1d7e515e59408d5c8fe2b51b1bb9381e84acfe6db03ad9b4ebe5ff0a039d37e765 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 6a3b8331e801f083b403b0857ed8d574 |
| SHA1 | 48d275731f1dbd0630d1ca55a1b05f149a011d1f |
| SHA256 | 98651a2da4a4613bc2a03c4128926fe6b05f1af8a7a21e1fedec75db013706a0 |
| SHA512 | 7527b8857707c8822e4b7f5049ddc9b4c49933e68535690746d84b7f0187a10f36e874719bdb1bf3ba8b035568a7cbafd687b80c4621dc35552d73f7e497071d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 29969e6078f159b9bce21239c591d1f6 |
| SHA1 | 5e59398ad3d434b61cc5a7f0eb59b600bb064992 |
| SHA256 | 70a098278dbe86701ec4deaf6297cef1f24826aa5476255fd095d5893fab9355 |
| SHA512 | 40b1a4ddbbfbbb345ea75010e4161a81d8d8bd9bb4797c65f892a7a01e2f73bf500c34fcb881e21320cbe069b8d199b8ff19cd571dce464afd57edb046bb2847 |
memory/4920-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4920-149-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4920-153-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4920-155-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4920-156-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4920-157-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
memory/4580-166-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build2.exe
| MD5 | aa18968e6cfbdc382ada6a3ed2852085 |
| SHA1 | 4a41fa1a182916d5790aa2071106b3441d64468d |
| SHA256 | c165c8db38ef8dd8c33d103b5ee78e9ddafd8081ff0c7c035fa5251f970e6cfb |
| SHA512 | 8ffdacca2b003438fd4874e7c88beedb6ad8cf9cd5b36fda5907751e06a85a829e7d9ce7335fb59590462f78054722bccba511b21db838368c661d993000a845 |
memory/4580-169-0x0000000000400000-0x000000000046C000-memory.dmp
memory/1384-170-0x00000000046E0000-0x0000000004737000-memory.dmp
memory/4580-171-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4580-172-0x0000000000400000-0x000000000046C000-memory.dmp
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\0de2b267-039b-4223-8113-fbbc6810a9fd\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4920-179-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/4580-192-0x0000000061E00000-0x0000000061EF3000-memory.dmp
\ProgramData\nss3.dll
| MD5 | 1cc453cdf74f31e4d913ff9c10acdde2 |
| SHA1 | 6e85eae544d6e965f15fa5c39700fa7202f3aafe |
| SHA256 | ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5 |
| SHA512 | dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571 |
\ProgramData\mozglue.dll
| MD5 | c8fd9be83bc728cc04beffafc2907fe9 |
| SHA1 | 95ab9f701e0024cedfbd312bcfe4e726744c4f2e |
| SHA256 | ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a |
| SHA512 | fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040 |
memory/4580-245-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4580-247-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4580-248-0x0000000000400000-0x000000000046C000-memory.dmp
memory/4580-249-0x0000000000400000-0x000000000046C000-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 |