Analysis Overview
SHA256
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6
Threat Level: Known bad
The file ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
Modifies file permissions
Checks computer location settings
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Program crash
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-09 08:01
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-09 08:01
Reported
2024-04-09 08:04
Platform
win10v2004-20240226-en
Max time kernel
143s
Max time network
151s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.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-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d8acdbf3-1d14-4016-af26-97057cb9b9c6\\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.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 |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4036 set thread context of 732 | N/A | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe |
| PID 4548 set thread context of 4568 | N/A | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\d8acdbf3-1d14-4016-af26-97057cb9b9c6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 380 -p 4568 -ip 4568
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4568 -s 568
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3696 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| 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 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 159.113.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 13.107.253.64:443 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 98.56.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.173.189.20.in-addr.arpa | udp |
Files
memory/4036-1-0x0000000004A70000-0x0000000004B0E000-memory.dmp
memory/4036-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp
memory/732-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/732-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/732-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/732-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\d8acdbf3-1d14-4016-af26-97057cb9b9c6\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
| MD5 | 853cc78a670e6ac494a7daf873b84d2b |
| SHA1 | 65034a73ece0f47a512b0169b4bb8d7327eb5ee7 |
| SHA256 | ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6 |
| SHA512 | 384379dc5bc40d1690bc1ed94c324e2b24dc17ad1ea08a41bcc66350a6619d1f2a51a1111b8b9c2e8fd7f5e21c291eb1f7b00ce942dc4666ddeff11acb357d83 |
memory/732-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4548-18-0x0000000002F40000-0x0000000002FD3000-memory.dmp
memory/4568-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4568-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4568-23-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-09 08:01
Reported
2024-04-09 08:04
Platform
win11-20240221-en
Max time kernel
149s
Max time network
155s
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-1-5-21-647252928-2816094679-1307623958-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b3a32004-0fca-418c-8025-d7388bb7e214\\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.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 1636 set thread context of 4880 | N/A | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe |
| PID 772 set thread context of 1180 | N/A | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe | C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b3a32004-0fca-418c-8025-d7388bb7e214" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| 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 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| CO | 186.147.159.149:80 | sdfjhuz.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
| KR | 211.119.84.111:80 | sajdfue.com | tcp |
Files
memory/1636-1-0x0000000004AA0000-0x0000000004B35000-memory.dmp
memory/1636-2-0x0000000004B40000-0x0000000004C5B000-memory.dmp
memory/4880-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4880-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4880-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4880-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\b3a32004-0fca-418c-8025-d7388bb7e214\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
| MD5 | 853cc78a670e6ac494a7daf873b84d2b |
| SHA1 | 65034a73ece0f47a512b0169b4bb8d7327eb5ee7 |
| SHA256 | ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6 |
| SHA512 | 384379dc5bc40d1690bc1ed94c324e2b24dc17ad1ea08a41bcc66350a6619d1f2a51a1111b8b9c2e8fd7f5e21c291eb1f7b00ce942dc4666ddeff11acb357d83 |
memory/4880-18-0x0000000000400000-0x0000000000537000-memory.dmp
memory/772-20-0x0000000004AA0000-0x0000000004B39000-memory.dmp
memory/1180-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-24-0x0000000000400000-0x0000000000537000-memory.dmp
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 | a34ff07789d8c10e95ab13e0317749f1 |
| SHA1 | e7025cbaf8e3853186f1c8363ef4311041bb2844 |
| SHA256 | 3c719f08fdcf9de9664d442ad42e3ea122497f9a77762e1cebe88217cb6ba885 |
| SHA512 | cc29b9ddc6f385b5675f3168ffec8c9b346db3d2128d725ec2e408b3a4066e690d8a2677727a51fbe7f84356f41c60f315873ef5b8c132598c38979eba8384c6 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | fc5408c48a55314c72e200b74330cac4 |
| SHA1 | 7e8889ec3189a40e6078088927bf3612753fa628 |
| SHA256 | 7ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4 |
| SHA512 | 481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 99b0f15a79de51abcd3082b95d9e94a5 |
| SHA1 | a703df786b0dd9ff6e1092219191037fa061ddd3 |
| SHA256 | 18c1efe688d64db3e09df6c248ba890f5f37c3cf42089ad12abe978b3e56757c |
| SHA512 | acd2349af80dade6ed74436bb173ddf6e8e6be507bab1ef79795d3e7a082faeb3a91e0153177e067dc60ef006386effcc589dad694b2e7a3cbebd295d59ce3b2 |
memory/1180-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1180-39-0x0000000000400000-0x0000000000537000-memory.dmp