Analysis Overview
SHA256
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800
Threat Level: Known bad
The file 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
Checks computer location settings
Modifies file permissions
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-09 02:44
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-09 02:44
Reported
2024-04-09 02:46
Platform
win11-20240319-en
Max time kernel
150s
Max time network
156s
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-1-5-21-1233663403-1277323514-675434005-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e3589f93-9121-40ca-916f-6983846b1db0\\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.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 2444 set thread context of 3028 | N/A | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe |
| PID 2448 set thread context of 1292 | N/A | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\e3589f93-9121-40ca-916f-6983846b1db0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.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 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.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 | sajdfue.com | tcp |
| CO | 186.147.159.149:80 | sajdfue.com | tcp |
| CO | 186.147.159.149:80 | sajdfue.com | tcp |
| CO | 186.147.159.149:80 | sajdfue.com | tcp |
| CO | 186.147.159.149:80 | sajdfue.com | tcp |
| CO | 186.147.159.149:80 | sajdfue.com | tcp |
Files
memory/2444-1-0x0000000004BE0000-0x0000000004C7A000-memory.dmp
memory/2444-2-0x0000000004C80000-0x0000000004D9B000-memory.dmp
memory/3028-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3028-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3028-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3028-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\e3589f93-9121-40ca-916f-6983846b1db0\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
| MD5 | a911c76f3695c14585bc205d9201804d |
| SHA1 | c8422674f6541052f5b40bc0b0b106b57839581c |
| SHA256 | 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800 |
| SHA512 | decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79 |
memory/3028-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2448-20-0x0000000004AA0000-0x0000000004B42000-memory.dmp
memory/1292-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-24-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 580071ebd24cccfd9268e1474bb8134e |
| SHA1 | 443665efe7009fe1d4c5bc4786dc9cc540e59ef6 |
| SHA256 | 53e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461 |
| SHA512 | 13d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 16741397ba1bbf4d2d36f19fca44c52a |
| SHA1 | 3180dc5ff9580328a77f166accb8f924878697e9 |
| SHA256 | 047779fc9aea8da867b00281c50a965bd0af4f3ce67791592fd614614c07236d |
| SHA512 | 484812cb4bc6bbfe4e29e8626069b66eac86ff9e7e61d486b6bf2a419b61baaf81c33dc1213472bae9e3d41dd9950b115be3bafd245a52372b6cba2094faef02 |
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 | c973b3d0dee0b10e1707e171bff58568 |
| SHA1 | 1f8875694dc8f9805bcd1371ca6bd52692695f14 |
| SHA256 | 0bb0f84de6a4d4a0cb03d6a37990b3a76b577260dbe6d93206936a4df188cc3e |
| SHA512 | 4965a0fb6632f0b5417e101affa67a8cc72e9af1c74962dbfe459d99f6394324b28681900f5bd4f98aaa1ae35ac517fc99d30ee6375c521a435b930e0397ad19 |
memory/1292-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1292-39-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-09 02:44
Reported
2024-04-09 02:46
Platform
win10v2004-20240226-en
Max time kernel
154s
Max time network
151s
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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.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\\61d139fb-ca56-408d-a06e-df6d64877503\\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.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 464 set thread context of 3768 | N/A | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe |
| PID 2924 set thread context of 3456 | N/A | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.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\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\61d139fb-ca56-408d-a06e-df6d64877503" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3456 -ip 3456
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3456 -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=4088 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
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 | 24.65.21.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 13.107.253.67:443 | tcp | |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 12.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp |
Files
memory/464-1-0x00000000049B0000-0x0000000004A51000-memory.dmp
memory/464-2-0x0000000004A60000-0x0000000004B7B000-memory.dmp
memory/3768-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3768-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3768-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3768-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\61d139fb-ca56-408d-a06e-df6d64877503\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
| MD5 | a911c76f3695c14585bc205d9201804d |
| SHA1 | c8422674f6541052f5b40bc0b0b106b57839581c |
| SHA256 | 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800 |
| SHA512 | decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79 |
memory/3768-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2924-20-0x00000000049A0000-0x0000000004A35000-memory.dmp
memory/3456-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3456-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3456-25-0x0000000000400000-0x0000000000537000-memory.dmp