Analysis Overview
SHA256
f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56
Threat Level: Known bad
The file f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56 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
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-09 05:47
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-09 05:47
Reported
2024-04-09 05:50
Platform
win11-20240221-en
Max time kernel
143s
Max time network
123s
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-1-5-21-4181651180-3163410697-3990547336-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4ee7e203-58d4-411e-9b85-aad544db5358\\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.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 800 set thread context of 4252 | N/A | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe |
| PID 3480 set thread context of 2712 | N/A | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe"
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4ee7e203-58d4-411e-9b85-aad544db5358" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.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 | 104.21.65.24:443 | api.2ip.ua | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| CO | 190.156.239.49:80 | sajdfue.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
| AR | 200.45.93.45:80 | sajdfue.com | tcp |
Files
memory/800-1-0x0000000004C10000-0x0000000004CB2000-memory.dmp
memory/800-2-0x0000000004CC0000-0x0000000004DDB000-memory.dmp
memory/4252-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4252-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4252-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4252-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\4ee7e203-58d4-411e-9b85-aad544db5358\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
| MD5 | 1be477c579869b30cd8f9ec09e2611b3 |
| SHA1 | 897d59324c868c1d194dd0107212d119b15aa76a |
| SHA256 | f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56 |
| SHA512 | 23236d3b8f3452155496e9097aad21c9b9f9c06a1379a1cb819445d265b21a1cb2f859f5672c6e3e57e7ac7fef6b0ab25271e47202582b2f3c43a39d27e6c4df |
memory/4252-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3480-20-0x0000000004960000-0x00000000049FB000-memory.dmp
memory/2712-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-24-0x0000000000400000-0x0000000000537000-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 | ae205a1749bdb7b70656d9abeebe7952 |
| SHA1 | 7cb36d8093083a4926dffcee8d48f0e15e4336a9 |
| SHA256 | 28ec58d780a3eb481bb0bb08b8f6590e65c42221ff365ca10e087f1fd88e5813 |
| SHA512 | 3a85e4468bc7c9b8992cb9d555ea58bbf5d041653e3ca0dd489261c4ac0b6c437a7438a47871fe20c6dab6d6f5088b558677de38f4f4d571384b2becdbc88e8b |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 0c35495e9b6093a61964e508204036fd |
| SHA1 | d80f999f6854b291112fd23b124ac87aedc84004 |
| SHA256 | de425888e45e9ef9291093533a06b69d9aec7405b7cb8e0a6a91a2cf9800f664 |
| SHA512 | 97fb05f3420dc026f0d96f2753ea389670e5097050b7f1b96b17c71915462f3210671baa9c968c0c961127031e331b30ed85fb24d8bfd745d903ac17c1606e30 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
memory/2712-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-39-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-09 05:47
Reported
2024-04-09 05:50
Platform
win10v2004-20240226-en
Max time kernel
145s
Max time network
144s
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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.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-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6c6f50c6-94dc-43f9-82d4-078781cb920c\\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.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 3844 set thread context of 2992 | N/A | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe |
| PID 3848 set thread context of 3524 | N/A | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe | C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe"
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\6c6f50c6-94dc-43f9-82d4-078781cb920c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
"C:\Users\Admin\AppData\Local\Temp\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe" --Admin IsNotAutoStart IsNotTask
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=4100 --field-trial-handle=2272,i,1589057049575649654,2929151440327217574,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 97.17.167.52.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 | 3.180.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.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 |
| AR | 190.195.60.212:80 | sajdfue.com | tcp |
| CO | 181.129.118.140:80 | sdfjhuz.com | tcp |
| AR | 190.195.60.212:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 212.60.195.190.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.118.129.181.in-addr.arpa | udp |
| AR | 190.195.60.212:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| AR | 190.195.60.212:80 | sajdfue.com | tcp |
| AR | 190.195.60.212:80 | sajdfue.com | tcp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 65.139.73.23.in-addr.arpa | udp |
| US | 13.107.246.64:443 | tcp |
Files
memory/3844-1-0x0000000004AF0000-0x0000000004B85000-memory.dmp
memory/3844-2-0x0000000004B90000-0x0000000004CAB000-memory.dmp
memory/2992-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2992-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2992-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2992-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\6c6f50c6-94dc-43f9-82d4-078781cb920c\f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56.exe
| MD5 | 1be477c579869b30cd8f9ec09e2611b3 |
| SHA1 | 897d59324c868c1d194dd0107212d119b15aa76a |
| SHA256 | f585d7f7bf9e7a6e5ef8ef61f42b7eeabb44a5ca37292781116392b795774f56 |
| SHA512 | 23236d3b8f3452155496e9097aad21c9b9f9c06a1379a1cb819445d265b21a1cb2f859f5672c6e3e57e7ac7fef6b0ab25271e47202582b2f3c43a39d27e6c4df |
memory/2992-16-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3848-19-0x00000000048E0000-0x0000000004977000-memory.dmp
memory/3524-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-22-0x0000000000400000-0x0000000000537000-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 | 32d86da12646fec4aceda05749f4808c |
| SHA1 | 74e7ed910d4c9653b3f8b1b9ce3aedbeee9e0057 |
| SHA256 | 830b2742a3eb075ce0db0606bed617989cc0669311acaac0c2380ae208f01d23 |
| SHA512 | 3267901e354f724071fad18e79ef3d6231f6b31f7da4350c1205a7bcf6db82aa60a339a8156bba128dfe39ba456b375061f84dce05fc18e2cf01860f51588d7f |
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 | bf6f6f176423b09787a1873bf23c274c |
| SHA1 | dbccaba0f8aaf8fbcdce68be95a448c37e2c0862 |
| SHA256 | 8511fa724d5a671de9d9363db135c9c98acaa7f43a68559d838f33f1d53050f5 |
| SHA512 | 11e04ad8ba3298e5b8f640abe4b7aa2286f6a6975e90cfee9513ec62bc325636ed92ec61a36a33bd071b9481bd0e45b2c995046c1e911088b6a331bedd132465 |
memory/3524-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3524-37-0x0000000000400000-0x0000000000537000-memory.dmp