Analysis Overview
SHA256
f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b
Threat Level: Known bad
The file f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Checks computer location settings
Modifies file permissions
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-06 21:35
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-06 21:35
Reported
2024-04-06 21:38
Platform
win10v2004-20240226-en
Max time kernel
148s
Max time network
150s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\73fb1565-7e91-4ae6-b972-d3bdf793871c\\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe | N/A |
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 2572 set thread context of 3764 | N/A | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe |
| PID 1128 set thread context of 2164 | N/A | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe"
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\73fb1565-7e91-4ae6-b972-d3bdf793871c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.18.217.172.in-addr.arpa | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | sdfjhuz.com | udp |
| US | 8.8.8.8:53 | sajdfue.com | udp |
| JO | 176.29.154.25:80 | sdfjhuz.com | tcp |
| MX | 187.143.46.11:80 | sajdfue.com | tcp |
| MX | 187.143.46.11:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 25.154.29.176.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.46.143.187.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| MX | 187.143.46.11:80 | sajdfue.com | tcp |
| MX | 187.143.46.11:80 | sajdfue.com | tcp |
| MX | 187.143.46.11:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 159.113.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.179.89.13.in-addr.arpa | udp |
Files
memory/2572-1-0x0000000004940000-0x00000000049D8000-memory.dmp
memory/2572-2-0x0000000004AD0000-0x0000000004BEB000-memory.dmp
memory/3764-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3764-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3764-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3764-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\73fb1565-7e91-4ae6-b972-d3bdf793871c\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
| MD5 | db45443586d5e4d78ce547cc809af356 |
| SHA1 | 8e360a89ddf44358876b60ff17e20c2375ba2f80 |
| SHA256 | f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b |
| SHA512 | 687b3b033370ba9becf095e1dc5aeccc2db745a84f7b3ececdb463e65856caa0dd0158d722144f6a605027bfeb44f52cb12e3f593282926046aee387a52f1c55 |
memory/3764-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1128-18-0x0000000004700000-0x00000000047A0000-memory.dmp
memory/2164-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-22-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 38fe440dcb41bf01baa39153169a3d74 |
| SHA1 | 74a11892ffb1e9baf34fca27ce617993a3221080 |
| SHA256 | 80c40063d4b3729809906924dd55487a4f20c5bc8aeefa8cfc313dc532f7e423 |
| SHA512 | eaf66971a2b57aa93c9fb3c2d25759174dfb0a90d61f2589aeee59d3c540b5cbd9fb669891616e57b41d66b41b6586c3724d3b02f91a86bb7bd905bf2faac31c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 7fced6d76d82044e78e0c08c443079c2 |
| SHA1 | 29c2d428e7d9a56a6bf3d04c8e3af900dbe0158f |
| SHA256 | 77cb4a7b7f3ca860907393d270a712bfdf10290d24a5f78ab4a916bdc9e5435d |
| SHA512 | fc690e3541d4d9aee815227e1363cf0740008279639ff4b7ebd1a63af1826d44f199741107d43082dfb0ce672412cd35d553ae598f8c143664426b51e0033f39 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 12eb31545ecb648063b59b6fd8d6b498 |
| SHA1 | c2f2e3eb3fe8a25ecb02132c71ecf21fa5eb6a12 |
| SHA256 | 3efffa605924172d35761fa1725290dfe505e988c37f89bcb93844dc9b44fb6b |
| SHA512 | e98e48947f350a54ea9376ed1581458d2e02ce70a88fac7ca2b65708e60f1e4d3ddb64669ed616469f931a47b6a47892b4f90000790197c954d50aa9fa587325 |
memory/2164-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2164-37-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-06 21:35
Reported
2024-04-06 21:38
Platform
win11-20240221-en
Max time kernel
144s
Max time network
141s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e80ba3e1-64dd-43be-99f7-276efa886e49\\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe | N/A |
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 3048 set thread context of 1844 | N/A | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe |
| PID 1588 set thread context of 4956 | N/A | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe | C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe"
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e80ba3e1-64dd-43be-99f7-276efa886e49" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
"C:\Users\Admin\AppData\Local\Temp\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.18.217.172.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| CL | 201.236.158.115:80 | sajdfue.com | tcp |
| CO | 190.28.105.191:80 | sajdfue.com | tcp |
| CL | 201.236.158.115:80 | sajdfue.com | tcp |
| CL | 201.236.158.115:80 | sajdfue.com | tcp |
| CL | 201.236.158.115:80 | sajdfue.com | tcp |
| CL | 201.236.158.115:80 | sajdfue.com | tcp |
Files
memory/3048-1-0x0000000004A40000-0x0000000004AD9000-memory.dmp
memory/3048-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp
memory/1844-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1844-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1844-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1844-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\e80ba3e1-64dd-43be-99f7-276efa886e49\f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b.exe
| MD5 | db45443586d5e4d78ce547cc809af356 |
| SHA1 | 8e360a89ddf44358876b60ff17e20c2375ba2f80 |
| SHA256 | f35a051f2c35585aec7f30f2aabb5dcc413f20fd89de031b47f5ccb3c6e37d0b |
| SHA512 | 687b3b033370ba9becf095e1dc5aeccc2db745a84f7b3ececdb463e65856caa0dd0158d722144f6a605027bfeb44f52cb12e3f593282926046aee387a52f1c55 |
memory/1844-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1588-21-0x0000000004950000-0x00000000049ED000-memory.dmp
memory/4956-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-24-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 38fe440dcb41bf01baa39153169a3d74 |
| SHA1 | 74a11892ffb1e9baf34fca27ce617993a3221080 |
| SHA256 | 80c40063d4b3729809906924dd55487a4f20c5bc8aeefa8cfc313dc532f7e423 |
| SHA512 | eaf66971a2b57aa93c9fb3c2d25759174dfb0a90d61f2589aeee59d3c540b5cbd9fb669891616e57b41d66b41b6586c3724d3b02f91a86bb7bd905bf2faac31c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 015d2bc721f8dc7a7d40bd186905cde9 |
| SHA1 | 333c74c73514d6b1ce84130d7b15ab0fd1236083 |
| SHA256 | 1eabb4ef4b84c06f0c918c0c03e4e942b98008cc6d564774f37ecbd5255c960b |
| SHA512 | 29785750a0a589d2dd36b0843a6cbc0d8eb3179968b08c64ef216e02e1dd391f16d00bd9350bc4d8fd507d51fc84727fdaf044e01516be7b6a640879033feaf6 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | d689cdef7e3984fbab28716e8a19156e |
| SHA1 | 7ce6bc5b37cc3e63e22da016bcd3da5f17bf87f5 |
| SHA256 | 48768b7cdfceb3bc72e305843cb9df476c7c3c18e5defc2b43bbc81249979b0a |
| SHA512 | a9151f1b793ba7512047e7dfb1763c483a8053b5f25616421d26bf8c452dadba0dc1ec76607af6985711ce99a3d5ee49f061cb119ba149be49f3d37a3c3f55a9 |
memory/4956-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4956-39-0x0000000000400000-0x0000000000537000-memory.dmp