Analysis
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max time kernel
147s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
15/04/2024, 16:04
Static task
static1
Behavioral task
behavioral1
Sample
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
Resource
win11-20240412-en
General
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Target
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
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Size
803KB
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MD5
bd9cc7d219c9c1b402e9e479077eb1fd
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SHA1
2b13c4ba018730a0e90c150a44f3e7bc127b465f
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SHA256
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022
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SHA512
72fd8443954d232ff385d1b96267f4d651963af97441fe8f8ea0500576bba90617ebe60d881e0ad502c4385db922bcdb0b04ff7893921550ab05ec8a1c5c0d56
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SSDEEP
12288:vVZMkz6khHV4cghyGoTNFEFGPpz0R9BjrWafbJHvWID9FX0t5wovL+gCyla66:vVZGoTw20fBPWaVHek0toH
Malware Config
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.uajs
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offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/704-2-0x0000000004CE0000-0x0000000004DFB000-memory.dmp family_djvu behavioral2/memory/2308-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2308-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2308-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2308-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2308-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1340-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Modifies file permissions 1 TTPs 1 IoCs
pid Process 4340 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-834482027-582050234-2368284635-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\062346fb-d56a-4c7a-8405-9761b48807be\\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe\" --AutoStart" d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 6 api.2ip.ua 1 api.2ip.ua 2 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 704 set thread context of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 4276 set thread context of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 1340 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 1340 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 704 wrote to memory of 2308 704 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 77 PID 2308 wrote to memory of 4340 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 78 PID 2308 wrote to memory of 4340 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 78 PID 2308 wrote to memory of 4340 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 78 PID 2308 wrote to memory of 4276 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 79 PID 2308 wrote to memory of 4276 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 79 PID 2308 wrote to memory of 4276 2308 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 79 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82 PID 4276 wrote to memory of 1340 4276 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:704 -
C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2308 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\062346fb-d56a-4c7a-8405-9761b48807be" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4340
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C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4276 -
C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1340
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5f741810cb830974aebab5f43eb80bc43
SHA11019ffd11ba07f662659b7f244d2743b4b1562c3
SHA25620c4d592f763227cd6ed7fc812ae9d65edd6e046c30a70e7c694c579d9f1580a
SHA512607ca542510b2a90fbade08569e449fdf35673dc4f045c4ca61982666fe2dd694d265835ebe2d90146dfcecedc7f229804c8e235d8eb9ca36f761064522539f4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5fdc24d44bcfa8b4ab8a9811e6268da5a
SHA176ec1b083314e142c6c49bf6516f402b30257536
SHA2567575249158d653b287fa12064ec2c1f6f8c8257135585159cb3c77da900c3a11
SHA5128ad20cdc7cf7ddd2d0a97205c72c2b13d5cd63889204b192bd66e1aa3be035d6a3060bd582836b5a9b8f1c537136b6b8b6033bf1bd5f6e7f240febfa8e3aa462
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5a95d8278087ccdcf8e8c2f9426c7b735
SHA151028b604ce7c9365b5b58c280540e6571997bb5
SHA256057c2bde6ed7ade1099f54cddcde3169ff571e95ccb8877bfcdb39f250198b07
SHA51240eeeee4fe4932b3f8595347eb24fe043e8a2f384b0ddc61528582caad8dd6672db33bf3013a34a90522c8f5c28b25257f7dc5ea0ec8c84435e3b961fff92696
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C:\Users\Admin\AppData\Local\062346fb-d56a-4c7a-8405-9761b48807be\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
Filesize803KB
MD5bd9cc7d219c9c1b402e9e479077eb1fd
SHA12b13c4ba018730a0e90c150a44f3e7bc127b465f
SHA256d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022
SHA51272fd8443954d232ff385d1b96267f4d651963af97441fe8f8ea0500576bba90617ebe60d881e0ad502c4385db922bcdb0b04ff7893921550ab05ec8a1c5c0d56