Analysis Overview
SHA256
a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11
Threat Level: Known bad
The file a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11 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
Loads dropped DLL
Reads user/profile data of web browsers
Checks computer location settings
Looks up external IP address via web service
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Suspicious use of SetThreadContext
Enumerates physical storage devices
Delays execution with timeout.exe
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
2022-11-30 19:58
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-11-30 19:58
Reported
2022-11-30 20:01
Platform
win10v2004-20220901-en
Max time kernel
66s
Max time network
131s
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\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\85f1200a-7ff0-47d1-b640-7a57a0755e9b\\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.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 2680 set thread context of 3624 | N/A | C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe | C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe |
| PID 532 set thread context of 4912 | N/A | C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe | C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe |
| PID 4372 set thread context of 2996 | N/A | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\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\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\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\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe
"C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe"
C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe
"C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\85f1200a-7ff0-47d1-b640-7a57a0755e9b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe
"C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe
"C:\Users\Admin\AppData\Local\Temp\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe
"C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe"
C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build3.exe
"C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\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\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe
"C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\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 |
| N/A | 8.8.8.8:53 | api.2ip.ua | udp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 162.0.217.254:443 | api.2ip.ua | tcp |
| N/A | 8.8.8.8:53 | uaery.top | udp |
| N/A | 8.8.8.8:53 | fresherlights.com | udp |
| N/A | 210.182.29.70:80 | fresherlights.com | tcp |
| N/A | 187.212.179.75:80 | fresherlights.com | tcp |
| N/A | 187.212.179.75:80 | fresherlights.com | tcp |
| N/A | 8.8.8.8:53 | t.me | udp |
| N/A | 149.154.167.99:443 | t.me | tcp |
| N/A | 116.203.0.170:80 | 116.203.0.170 | tcp |
| N/A | 20.189.173.12:443 | tcp |
Files
memory/3624-132-0x0000000000000000-mapping.dmp
memory/3624-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3624-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2680-135-0x000000000230F000-0x00000000023A0000-memory.dmp
memory/2680-136-0x00000000023B0000-0x00000000024CB000-memory.dmp
memory/3624-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3624-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3904-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\85f1200a-7ff0-47d1-b640-7a57a0755e9b\a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11.exe
| MD5 | 3522e521e62828dd98d504b1e7e20837 |
| SHA1 | 48c46d0c9eb0c7eb22a43c1a2f53b1f996f1c677 |
| SHA256 | a02b06b3784e966634d642cca0acc7a97f5da5190a2774259702d6d8df7efb11 |
| SHA512 | 3823b6d224d4a19feb8f89fa440de2a47909961fa9075ff8a21fac05842aebbed19577773c9275f22fd9b09903503f816759daf144da21f99157694e3218dc31 |
memory/532-141-0x0000000000000000-mapping.dmp
memory/3624-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4912-143-0x0000000000000000-mapping.dmp
memory/4912-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/532-146-0x000000000212F000-0x00000000021C0000-memory.dmp
memory/4912-147-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 916c512d221c683beeea9d5cb311b0b0 |
| SHA1 | bf0db4b1c4566275b629efb095b6ff8857b5748e |
| SHA256 | 64a36c1637d0a111152002a2c0385b0df9dd81b616b3f2073fbbe3f2975aa4d8 |
| SHA512 | af32cffea722438e9b17b08062dc2e209edc5417418964ead0b392bd502e1a647a8456b2ee2ea59faf69f93d0c6ea6f15949b6c30924db7da65b91cb18e8dc6c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 86cb61955b7cda2a51566cd44bbdc7b0 |
| SHA1 | 580bcb9207142e1279b365c2fb1abdf8768b9400 |
| SHA256 | e359bc12e7196eae9914b6e610b81a907b4596cd2ac53a26fb485c20dc5aaf6d |
| SHA512 | 77736f699dd78a8514e78b6ea2924a74f3144404e2ea11145ad20052894ff7464aa10688e9673e0fc3937e179bee23e27d1f8ce6f83039fa5bf9e2af9dfcbb56 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 76e7d5bf61b2e80d159f88aa9798ce91 |
| SHA1 | 32a46de50c9c02b068e39cf49b78c7e2d5ace20d |
| SHA256 | 280fd6ae3ad21323199759814c4dd82329eb8f9847ed1fa2be145e83b4c88bf3 |
| SHA512 | 5efd8c64ac40ae006d2ce4509eb9e5f1448fb1156e914d303e8bc4dcfe1d94c57c7eae216b362877e7b644876656cc9e5c4cebfc905bab3f8b09cb1a051d69c4 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 811d9c1e837b9f0d4b6d051c4a69fd8e |
| SHA1 | 51f739448c5da92204b9005c44094acceafc3c8c |
| SHA256 | ef756f9566160a0d98ca24a9b4e7f4a45f2744fb880cb4c87b5f554bc58b17b9 |
| SHA512 | 5292684db17dbb3e415e4d09c1107f241bd1ccaac711ed58efbabe422d2166b8a3dcdd49e74e05313148f9a0414e839e56b7c47bcf7bd4cb18a37f1a6bcd7e59 |
memory/4912-152-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/4372-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/4020-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/3032-159-0x0000000000000000-mapping.dmp
memory/2996-160-0x0000000000000000-mapping.dmp
memory/2996-161-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2996-163-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4372-165-0x000000000062D000-0x0000000000659000-memory.dmp
memory/4372-166-0x00000000020B0000-0x00000000020FB000-memory.dmp
memory/2996-164-0x0000000000400000-0x000000000045F000-memory.dmp
C:\Users\Admin\AppData\Local\9afff83d-05e5-44aa-b2ad-fd9f9f3ff000\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/2996-167-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2996-168-0x0000000061E00000-0x0000000061EF3000-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/2032-188-0x0000000000000000-mapping.dmp
memory/2996-189-0x0000000000400000-0x000000000045F000-memory.dmp
memory/3920-190-0x0000000000000000-mapping.dmp
memory/4912-191-0x0000000000400000-0x0000000000537000-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/4940-194-0x0000000000000000-mapping.dmp