Analysis Overview
SHA256
b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72
Threat Level: Known bad
The file b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Vidar
Djvu Ransomware
Downloads MZ/PE file
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Modifies file permissions
Adds Run key to start application
Looks up external IP address via web service
Checks installed software on the system
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Suspicious use of SetThreadContext
Enumerates physical storage devices
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-02-16 19:22
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-02-16 19:22
Reported
2023-02-16 19:24
Platform
win10v2004-20220812-en
Max time kernel
66s
Max time network
128s
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 |
Djvu Ransomware
Vidar
Downloads MZ/PE file
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\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.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\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.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\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.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\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\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\\fa2dbe6c-b571-44f3-8336-4c26f3e1eb33\\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.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 1588 set thread context of 5024 | N/A | C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe | C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe |
| PID 2488 set thread context of 476 | N/A | C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe | C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe |
| PID 4872 set thread context of 3584 | N/A | C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe | C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\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\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\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\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe
"C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe"
C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe
"C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\fa2dbe6c-b571-44f3-8336-4c26f3e1eb33" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe
"C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe
"C:\Users\Admin\AppData\Local\Temp\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe
"C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe"
C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build3.exe
"C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\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\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe
"C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\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 |
| 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 | bihsy.com | udp |
| KR | 211.53.230.67:80 | bihsy.com | tcp |
| KR | 211.119.84.111:80 | uaery.top | tcp |
| KR | 211.53.230.67:80 | bihsy.com | tcp |
| NL | 104.80.225.205:443 | tcp | |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 168.119.59.211:80 | 168.119.59.211 | tcp |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp |
Files
memory/5024-132-0x0000000000000000-mapping.dmp
memory/5024-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5024-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1588-136-0x0000000002540000-0x000000000265B000-memory.dmp
memory/1588-135-0x000000000239E000-0x0000000002430000-memory.dmp
memory/5024-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5024-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1984-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\fa2dbe6c-b571-44f3-8336-4c26f3e1eb33\b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72.exe
| MD5 | 529c3e30c0be34ef682fd9a95809d74e |
| SHA1 | e3a0c0dca60e9cb96c2572fba22bf60ed2a8e050 |
| SHA256 | b6a08965862e58d6e8c8b4b05a391728811087c5777418865eebeed31380da72 |
| SHA512 | 270a107dbdb19ad09e11bb3d5eb200c89d2c3774b3f123e43b85c42bebc39ee205a2b1a223356453945fcbafe542f5574ece4c119ef216209c8a7587917eff94 |
memory/2488-141-0x0000000000000000-mapping.dmp
memory/5024-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/476-143-0x0000000000000000-mapping.dmp
memory/476-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2488-146-0x00000000022D6000-0x0000000002368000-memory.dmp
memory/476-147-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 787e43d31eb180fba1ba0d8a7b32742b |
| SHA1 | 5d456a8faf7ebb3eb940240c7d7acd376e584774 |
| SHA256 | a9acf1f1ea673b26b3dbba99d983b8cd08afae38d8d51667de0d1efccddd8feb |
| SHA512 | 28ac76935528a1c6615e254b5393b19e7f185ce196513ed4802594dad546e0da79e1dcfee018c552f215d3f05327d561f4d535a634a561b8c71020a752644961 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 0e8f1fb71254974e1d528b62e7b02e8b |
| SHA1 | 2275bdfb4779b15a886d9558ee3e0ce97112ddee |
| SHA256 | f5e027fd76267c7668098a78724a82ca20ffb6818fc4e5b6eb9669866f32800c |
| SHA512 | f084ae94658a9a8db6da8437cd8ad913e9820ff6f05f974ca165ee7af98a0cbf32e87fde1e263c9a7ec9d7877de44ee0ab1dd22269135a03a922d7dcc6473304 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | c0a9976bddddfa2856725779e6d9574b |
| SHA1 | 576029fc1d056156710762dcdcf4be6013224bc9 |
| SHA256 | ee4194d81da0851b1185a7ec2835da904701b5b0dcaef47aafb8c75113d3b6c2 |
| SHA512 | 1e0d34f8f977b2711d3e87ab4392f8a87a2ead839cda6acd8fca0cb00aaad630a5c7795364c16d8540be65825c5b4eea78c852fdc63cf4d23db6f5050492d0c8 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | e825419f5d91cbb7dd2c1407c2ae4c08 |
| SHA1 | daca95b9bffaff1aacb09d09292a41c5e98f0d12 |
| SHA256 | 01a7d3b0ef49c660185536f53cfa2744c7784aef0981df4fd03ae06770b25376 |
| SHA512 | e4c0b3dea86821de18a10f43dac1263cf917075b620cd4f6ca22331dec27ca0c89b57145e33de8f502e09c1bcfaa400d27cb601f315b1a8b4c851f15064fd514 |
memory/476-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4872-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe
| MD5 | 4c9fdfbf316f37dbcc7314e5641f9a9a |
| SHA1 | 7fa01df0e5420f9e5b69486550460e839fd0f3a3 |
| SHA256 | e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611 |
| SHA512 | b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b |
C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe
| MD5 | 4c9fdfbf316f37dbcc7314e5641f9a9a |
| SHA1 | 7fa01df0e5420f9e5b69486550460e839fd0f3a3 |
| SHA256 | e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611 |
| SHA512 | b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b |
memory/5012-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/3860-159-0x0000000000000000-mapping.dmp
memory/476-160-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3584-161-0x0000000000000000-mapping.dmp
memory/3584-162-0x0000000000400000-0x0000000000472000-memory.dmp
memory/4872-165-0x0000000000848000-0x000000000087C000-memory.dmp
memory/4872-167-0x00000000021D0000-0x000000000222E000-memory.dmp
memory/3584-166-0x0000000000400000-0x0000000000472000-memory.dmp
memory/3584-164-0x0000000000400000-0x0000000000472000-memory.dmp
C:\Users\Admin\AppData\Local\bcb73964-4c01-4747-8917-ffddf838eabc\build2.exe
| MD5 | 4c9fdfbf316f37dbcc7314e5641f9a9a |
| SHA1 | 7fa01df0e5420f9e5b69486550460e839fd0f3a3 |
| SHA256 | e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611 |
| SHA512 | b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b |
memory/3584-168-0x0000000000400000-0x0000000000472000-memory.dmp
memory/3584-169-0x0000000050AD0000-0x0000000050BC3000-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/3820-189-0x0000000000000000-mapping.dmp
memory/3584-190-0x0000000000400000-0x0000000000472000-memory.dmp
memory/1108-191-0x0000000000000000-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/4188-194-0x0000000000000000-mapping.dmp