Analysis Overview
SHA256
3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b
Threat Level: Known bad
The file 3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b was found to be: Known bad.
Malicious Activity Summary
Vidar
Detected Djvu ransomware
Djvu Ransomware
Downloads MZ/PE file
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Modifies file permissions
Checks computer location settings
Looks up external IP address via web service
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Accesses 2FA software files, possible credential harvesting
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Delays execution with timeout.exe
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-12-01 05:24
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-12-01 05:24
Reported
2022-12-01 05:27
Platform
win10v2004-20220901-en
Max time kernel
66s
Max time network
132s
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\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\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\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.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\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.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\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\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\\f2037a36-c824-438f-9494-a081b0d7c878\\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.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 4872 set thread context of 2228 | N/A | C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe | C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe |
| PID 4124 set thread context of 4560 | N/A | C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe | C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe |
| PID 4152 set thread context of 2968 | N/A | C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe | C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\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\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\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\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe
"C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe"
C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe
"C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f2037a36-c824-438f-9494-a081b0d7c878" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe
"C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe
"C:\Users\Admin\AppData\Local\Temp\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe
"C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe"
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build3.exe
"C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build3.exe"
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe
"C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.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\4b3abe89-e520-49bd-9148-b0a5c1a4511d\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 | 20.123.141.233:443 | 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 | 190.117.75.91:80 | uaery.top | tcp |
| N/A | 190.141.60.22:80 | fresherlights.com | tcp |
| N/A | 190.141.60.22:80 | 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 | |
| N/A | 8.238.21.254:80 | tcp | |
| N/A | 8.238.21.254:80 | tcp | |
| N/A | 8.238.21.254:80 | tcp |
Files
memory/2228-132-0x0000000000000000-mapping.dmp
memory/2228-133-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2228-134-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4872-135-0x0000000002179000-0x000000000220A000-memory.dmp
memory/4872-136-0x0000000002210000-0x000000000232B000-memory.dmp
memory/2228-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2228-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2412-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\f2037a36-c824-438f-9494-a081b0d7c878\3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b.exe
| MD5 | d7d034eb4e18d62df6bad28b02b70091 |
| SHA1 | 0d9031c92147ea4a1f3642f2054506aadef285ea |
| SHA256 | 3bd94bc9a5df41ecd51329d12cc9b97f5adb9350d3f837c12364b900d9d6ce4b |
| SHA512 | e32f2de3a76dd2bc44e53070a386915a711cd4ed68fc0939b8e93c782738f5ca50c0712996a4286283d464e21c136cd62b7c7be6ac67abfe2a4dc3b53bbabe77 |
memory/4124-141-0x0000000000000000-mapping.dmp
memory/2228-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4560-143-0x0000000000000000-mapping.dmp
memory/4560-145-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4124-146-0x00000000020EA000-0x000000000217B000-memory.dmp
memory/4560-147-0x0000000000400000-0x0000000000537000-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\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 61ffe15234088bd43d27e9eb101ad1f6 |
| SHA1 | 80e8cf2dbbf66018e148cbab446cfc5e52eed1b2 |
| SHA256 | 1dc492a98f81cf0473e5ebc17c9284892b88c592b5194c31761a1ef1985c59b5 |
| SHA512 | f925dbd2d421bc596f344241ce915b69e8f9a5112f4b9d6e62c82a717493ce2422366395dea33dfce896704b940afd6366923a7a2eb476d10563bc76de15b61d |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | ad9e8f542871ce8f8c9ab88e0fba4624 |
| SHA1 | 01e31a2af1f3da0dd1f2d10f34c9402f7e075157 |
| SHA256 | c42f8c278e8cdc4018d6f43e29acfbb79e1b6a904d0a6df81e86f795ccbf63bc |
| SHA512 | aa476ef04e45086cb670a9b454d93e8fb0c476a5326715fbf47f4e1ed189447039cdf61cc28b64a4d32c3636a40b1f688867122be2954aac08fc80544de41d4c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | df85ec6440129a35a39c91201006be32 |
| SHA1 | 83507c27bb85c206fbda6460d29375a1f073a888 |
| SHA256 | c51fd8b52ac2e5a310153e467d63489374aed3e4447b0e2cc0e1fddcbc36ce90 |
| SHA512 | 859750b094da6b0c30216e5b21da381eeb9ce17b71993d615bf0604a34c12eca70a429b2a6818d139afe75c1ef6bed64c07fd817d4b0d5e87fa298d4851d1a45 |
memory/4560-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4152-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/204-156-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/2968-159-0x0000000000000000-mapping.dmp
memory/4520-161-0x0000000000000000-mapping.dmp
memory/4152-164-0x000000000073C000-0x0000000000769000-memory.dmp
memory/2968-163-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2968-165-0x0000000000400000-0x000000000045F000-memory.dmp
C:\Users\Admin\AppData\Local\4b3abe89-e520-49bd-9148-b0a5c1a4511d\build2.exe
| MD5 | b9212ded69fae1fa1fb5d6db46a9fb76 |
| SHA1 | 58face4245646b1cd379ee49f03a701eab1642be |
| SHA256 | 7a087c1bcd038c61ddb0f634f9b21e6db9bed59842f19adeda48b49acb20e16f |
| SHA512 | 09cab8ccedb9e53d6d2725e8b9dbbe8fa9552607a58d89876b6539a6612b2e7ac0440ef281971bec9191510915fa6264048510add493e6a862b0d3b4f006e342 |
memory/2968-160-0x0000000000400000-0x000000000045F000-memory.dmp
memory/4152-166-0x00000000020C0000-0x000000000210B000-memory.dmp
memory/2968-167-0x0000000000400000-0x000000000045F000-memory.dmp
memory/2968-168-0x0000000061E00000-0x0000000061EF3000-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/2060-188-0x0000000000000000-mapping.dmp
memory/2968-189-0x0000000000400000-0x000000000045F000-memory.dmp
memory/3236-190-0x0000000000000000-mapping.dmp
memory/4560-191-0x0000000000400000-0x0000000000537000-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/3576-194-0x0000000000000000-mapping.dmp