Analysis Overview
SHA256
9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85
Threat Level: Known bad
The file 9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Vidar
Detected Djvu ransomware
Downloads MZ/PE file
Executes dropped EXE
Reads user/profile data of web browsers
Modifies file permissions
Checks computer location settings
Loads dropped DLL
Adds Run key to start application
Looks up external IP address via web service
Accesses 2FA software files, possible credential harvesting
Checks installed software on the system
Accesses cryptocurrency files/wallets, possible credential harvesting
Suspicious use of SetThreadContext
Enumerates physical storage devices
Checks processor information in registry
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-10-11 16:14
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-10-11 16:14
Reported
2022-10-11 16:19
Platform
win10v2004-20220812-en
Max time kernel
173s
Max time network
195s
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\be2f470a-039e-456b-941b-231aa76a365c\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build3.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e4fb79ca-7970-4a09-9197-4e559b48062b\\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.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 3364 | N/A | C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe | C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe |
| PID 2968 set thread context of 3756 | N/A | C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe | C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe |
| PID 4272 set thread context of 2388 | N/A | C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe | C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\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\be2f470a-039e-456b-941b-231aa76a365c\build2.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\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 |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe
"C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe"
C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe
"C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e4fb79ca-7970-4a09-9197-4e559b48062b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe
"C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe
"C:\Users\Admin\AppData\Local\Temp\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe
"C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe"
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe
"C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe"
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build3.exe
"C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\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\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 | 20.189.173.10:443 | tcp | |
| US | 8.253.208.113:80 | tcp | |
| US | 8.253.208.113:80 | tcp | |
| US | 209.197.3.8:80 | 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 | winnlinne.com | udp |
| US | 8.8.8.8:53 | rgyui.top | udp |
| KW | 37.34.248.24:80 | rgyui.top | tcp |
| MX | 187.212.210.12:80 | rgyui.top | tcp |
| MX | 187.212.210.12:80 | rgyui.top | tcp |
| US | 8.8.8.8:53 | t.me | udp |
| NL | 149.154.167.99:443 | t.me | tcp |
| DE | 195.201.251.151:80 | 195.201.251.151 | tcp |
Files
memory/2240-132-0x00000000022D6000-0x0000000002367000-memory.dmp
memory/2240-133-0x0000000002370000-0x000000000248B000-memory.dmp
memory/3364-134-0x0000000000000000-mapping.dmp
memory/3364-135-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3364-136-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3364-137-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3364-138-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3420-139-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\e4fb79ca-7970-4a09-9197-4e559b48062b\9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85.exe
| MD5 | 9e5667e13ac62f847f040d374c9b381c |
| SHA1 | 6b657bb4a96acf80e477d971a777bd0b96cf019c |
| SHA256 | 9aa03530580aa44405540a22594ae21436b6d8b11916660ae00957c3eb5eec85 |
| SHA512 | 56b5f8ca5cc63bc38e70b6c88791e32326c1e26189d99543c380c65b93f2f893e1036e451d85f8000b8fecb321b6b96ca7b79865041a0821f580ede91f1e9f3b |
memory/2968-141-0x0000000000000000-mapping.dmp
memory/3364-142-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3756-143-0x0000000000000000-mapping.dmp
memory/2968-146-0x000000000227F000-0x0000000002310000-memory.dmp
memory/3756-147-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3756-145-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | b65fe68793e1e3ad7c909f440017ce63 |
| SHA1 | 77089f8d6d262700c9a45a657800548650fb8b38 |
| SHA256 | 194a86ea2de0e218095c8bed17b0c98f8da780bbde58ef9a94c8139de2b6da13 |
| SHA512 | 59f61d3486f0094a0c6ad876073ba1ec6b1fec907ca44185d95819970706ac548086ecd56f0bfc04b401cf5246b604fbd181a03a1bcba819b302a973b36a3c42 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
| MD5 | 0698dbc93ba7b6bef73ba316695f8317 |
| SHA1 | a444078ff1eb7c88f52cb4e324365926b491ed47 |
| SHA256 | 263292040d77903899257c1d21201dc64d6f8d6b5a1d945cd5b28d0124d7906c |
| SHA512 | ebacaa7009aebb88199cd70fd0bb3afe69ed300318cb633edd1c0404e42aef829617f589bcbad6cb7ab4bd0a8ae87f7df1435c786184ecc5de61c8fc6950a900 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 6f59ed058aa06aaf5ec6213b955aabd4 |
| SHA1 | baf7b828a563b8fb6111e4ce35e0055575ad80b4 |
| SHA256 | 2d82e2629fa2e08f28b43b15da43dff56c7f4b23b39d66109c7c61998e35b4d5 |
| SHA512 | 6b0f041dafb98b9eaf70ac0d20a98c56e1c42231c4a4ae6e11582b20d20bf8f96dfd7747739a10d77368994441adb0e181b356f8569697b1f22ab4fe931170ce |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
| MD5 | 176afac5c540757dbb121737617b4462 |
| SHA1 | 8faecf45c5090a14817cc679f8cdbc4d203e981f |
| SHA256 | a6787925a4c0e2ba3f92ed05cec04f7828d104e20692cf32a2607ad3e7f974ae |
| SHA512 | 11ce29032608ed3ddc5c496073a3565b56d72fca78266ffe07efbdc404cb0edd3b9600c772bad82cd5861d2206b87d8ce7343830b98f83dc29cc6eec0752426a |
memory/3756-152-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4272-153-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
memory/2388-156-0x0000000000000000-mapping.dmp
memory/2388-160-0x0000000000400000-0x0000000000463000-memory.dmp
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build2.exe
| MD5 | 5fd8c38657bb9393bb4736c880675223 |
| SHA1 | f3a03b2e75cef22262f6677e3832b6ad9327905c |
| SHA256 | 2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6 |
| SHA512 | 43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe |
memory/4272-161-0x00000000007CD000-0x00000000007F9000-memory.dmp
memory/4272-162-0x0000000000700000-0x000000000074F000-memory.dmp
memory/2388-157-0x0000000000400000-0x0000000000463000-memory.dmp
memory/2388-163-0x0000000000400000-0x0000000000463000-memory.dmp
memory/5068-164-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
C:\Users\Admin\AppData\Local\be2f470a-039e-456b-941b-231aa76a365c\build3.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/3756-167-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3468-168-0x0000000000000000-mapping.dmp
memory/2388-169-0x0000000000400000-0x0000000000463000-memory.dmp
memory/2388-170-0x0000000061E00000-0x0000000061EF3000-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 |
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |
memory/2912-192-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
| MD5 | 9ead10c08e72ae41921191f8db39bc16 |
| SHA1 | abe3bce01cd34afc88e2c838173f8c2bd0090ae1 |
| SHA256 | 8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0 |
| SHA512 | aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a |