Analysis Overview
SHA256
712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790
Threat Level: Known bad
The file 712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790 was found to be: Known bad.
Malicious Activity Summary
Vidar
Djvu Ransomware
Detected Djvu ransomware
Downloads MZ/PE file
Checks computer location settings
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Executes dropped EXE
Checks installed software on the system
Looks up external IP address via web service
Adds Run key to start application
Accesses cryptocurrency files/wallets, possible credential harvesting
Accesses 2FA software files, possible credential harvesting
Suspicious use of SetThreadContext
Enumerates physical storage devices
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-02-17 05:33
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-02-17 05:33
Reported
2023-02-17 05:35
Platform
win10v2004-20221111-en
Max time kernel
61s
Max time network
141s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
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Djvu Ransomware
Vidar
Downloads MZ/PE file
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\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\20bf134a-7754-4560-b937-954f59eedd46\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b9c26b07-e432-4dc9-8059-5d2933f793c2\\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.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 860 set thread context of 3280 | N/A | C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe | C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe |
| PID 4460 set thread context of 2636 | N/A | C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe | C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe |
| PID 2504 set thread context of 1628 | N/A | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\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\20bf134a-7754-4560-b937-954f59eedd46\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\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\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe
"C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe"
C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe
"C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b9c26b07-e432-4dc9-8059-5d2933f793c2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe
"C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe
"C:\Users\Admin\AppData\Local\Temp\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe
"C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe"
C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build3.exe
"C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\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\20bf134a-7754-4560-b937-954f59eedd46\build2.exe
"C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\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 | 93.184.220.29:80 | tcp | |
| 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 |
| HU | 5.204.254.120:80 | uaery.top | tcp |
| KR | 211.59.14.90:80 | bihsy.com | tcp |
| KR | 211.59.14.90:80 | bihsy.com | 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 |
| FR | 40.79.141.152:443 | tcp |
Files
memory/3280-132-0x0000000000000000-mapping.dmp
memory/3280-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3280-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/860-135-0x0000000002470000-0x0000000002502000-memory.dmp
memory/3280-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/860-136-0x0000000002510000-0x000000000262B000-memory.dmp
memory/3280-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4444-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\b9c26b07-e432-4dc9-8059-5d2933f793c2\712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790.exe
| MD5 | 2b90e9b7377ce537123b31021bc80156 |
| SHA1 | 0d28a02c223b2168a1ff49b63acd06842efe533a |
| SHA256 | 712041b573b3711491ba1bb72bdffe084ebef9fd1711f8cd65ff42f40ff3a790 |
| SHA512 | 314d5680912730cc7920053c6a88b6ea848967eee1288c1e1fa13f12ab66bf2f92aa4e00bde9463fdfdbfbef79fbc74c467474ffa03a2181516d672f4386a31f |
memory/4460-141-0x0000000000000000-mapping.dmp
memory/3280-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2636-143-0x0000000000000000-mapping.dmp
memory/4460-146-0x000000000080D000-0x000000000089F000-memory.dmp
memory/2636-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2636-147-0x0000000000400000-0x0000000000537000-memory.dmp
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\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | a38eaecc260ffe0c2a32b4794e73ccdd |
| SHA1 | ed2db46c80a0c68601a5ed6f2e2981136f46bb3c |
| SHA256 | 8512ecb91c974151ef0b10cc8b9e23d2de961cc34efe1e0290e8cd86117a4e75 |
| SHA512 | 775d2efc70ce8b2c7565d700f1899d3ee07ff1527692019e9f71a1b754f05c4756ea023e9f84f24eae2545a5c6a9c6d9f3e2f3a769acd46f8e765f48c2728991 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | e825419f5d91cbb7dd2c1407c2ae4c08 |
| SHA1 | daca95b9bffaff1aacb09d09292a41c5e98f0d12 |
| SHA256 | 01a7d3b0ef49c660185536f53cfa2744c7784aef0981df4fd03ae06770b25376 |
| SHA512 | e4c0b3dea86821de18a10f43dac1263cf917075b620cd4f6ca22331dec27ca0c89b57145e33de8f502e09c1bcfaa400d27cb601f315b1a8b4c851f15064fd514 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 8c485fe5b8b478e84d409f67bcc4aeef |
| SHA1 | 7922d3dc32f11fed21d5c99037c99df6c415b1bd |
| SHA256 | b6200bb0a4d3e39c59d3403c15aadc8c07aceeb47173046dc33c200fa5b41f60 |
| SHA512 | f73ee1902d2f67f7bd629c4b17f251e929e90c274aa8aa37694b75d445aa0b5a9907b6c72a58f4c9205fd921893ea7b35c191139041de13ed5a9629c0f5a306c |
memory/2636-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2504-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe
| MD5 | 4c9fdfbf316f37dbcc7314e5641f9a9a |
| SHA1 | 7fa01df0e5420f9e5b69486550460e839fd0f3a3 |
| SHA256 | e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611 |
| SHA512 | b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b |
C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe
| MD5 | 4c9fdfbf316f37dbcc7314e5641f9a9a |
| SHA1 | 7fa01df0e5420f9e5b69486550460e839fd0f3a3 |
| SHA256 | e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611 |
| SHA512 | b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b |
memory/3080-156-0x0000000000000000-mapping.dmp
memory/220-159-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/1628-160-0x0000000000000000-mapping.dmp
memory/1628-161-0x0000000000400000-0x0000000000472000-memory.dmp
memory/1628-163-0x0000000000400000-0x0000000000472000-memory.dmp
memory/2504-166-0x00000000020B0000-0x000000000210E000-memory.dmp
memory/1628-167-0x0000000000400000-0x0000000000472000-memory.dmp
memory/1628-165-0x0000000000400000-0x0000000000472000-memory.dmp
memory/2504-164-0x00000000007E8000-0x000000000081C000-memory.dmp
C:\Users\Admin\AppData\Local\20bf134a-7754-4560-b937-954f59eedd46\build2.exe
| MD5 | 4c9fdfbf316f37dbcc7314e5641f9a9a |
| SHA1 | 7fa01df0e5420f9e5b69486550460e839fd0f3a3 |
| SHA256 | e661e53f429cd22e30ca6fb368f3e011e76264892f4e718c75cb3636f4f2e611 |
| SHA512 | b22c60d27ed5457677645a2b8669cd1958cc18a021e19dcf1d1a3a88ed63cd4eb749b1fe8798f651dcc5595d019ceb3cb38eae7a07ab73098eee502dbee5c32b |
memory/1628-168-0x0000000050D00000-0x0000000050DF3000-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/2636-188-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2564-189-0x0000000000000000-mapping.dmp
memory/1628-190-0x0000000000400000-0x0000000000472000-memory.dmp
memory/1880-191-0x0000000000000000-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/1036-194-0x0000000000000000-mapping.dmp