Analysis
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max time kernel
143s -
max time network
125s -
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, 21:24
Static task
static1
Behavioral task
behavioral1
Sample
5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
Resource
win11-20240412-en
General
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Target
5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
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Size
819KB
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MD5
3d18b4d0c8a37c764f5d1258c346988f
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SHA1
406d89e9ada014fc30999b0e68ecffc3efb6c5a1
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SHA256
5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3
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SHA512
59b4d499cf80ab003f7fdb699dc0ccb26cd85676557f8e68172fd7381d36f66e5ab85a930eafa37e13e20298faf039e462f2385570aac810762b3e6cb93fd4c5
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SSDEEP
12288:morokz513ZjLAdZbWR8kuG0ooPGEhSJSn2KZsY2UEQDsyJKnlSzIoNrVksnZUnqO:moHZ46R8kuVo2L0JSnTyPyNZzZkqO
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/556-2-0x0000000004BA0000-0x0000000004CBB000-memory.dmp family_djvu behavioral2/memory/4196-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4196-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4196-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4196-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4196-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-41-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-42-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-43-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2780-44-0x0000000000400000-0x0000000000537000-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 2268 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-801878912-692986033-442676226-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a867201c-7ce3-437f-90a0-031915e87e54\\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe\" --AutoStart" 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.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 2 api.2ip.ua 8 api.2ip.ua 1 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 556 set thread context of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 4708 set thread context of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 -
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 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 2780 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 2780 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 556 wrote to memory of 4196 556 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 81 PID 4196 wrote to memory of 2268 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 82 PID 4196 wrote to memory of 2268 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 82 PID 4196 wrote to memory of 2268 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 82 PID 4196 wrote to memory of 4708 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 83 PID 4196 wrote to memory of 4708 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 83 PID 4196 wrote to memory of 4708 4196 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 83 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86 PID 4708 wrote to memory of 2780 4708 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:556 -
C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4196 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\a867201c-7ce3-437f-90a0-031915e87e54" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2268
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C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4708 -
C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2780
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD53c6a98dff2c8e5d41183fb934602bccf
SHA1389eea4f6c8b9a19dd6efd65b2c979feeb4262a7
SHA2568c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8
SHA512fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd
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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
MD55ef094b8f729b5932055d1183b4621be
SHA1aef59e51a62465bbce63e05c5dd5a7ac50f842ac
SHA256e60ba70d3690db7acc43d9baa21b5e4eb0df8e546a702a566e434c084f04040b
SHA51290685e564003ed51e0cd98fc7fd7b30a186ce49761c78dc631864f5962097a44480aae2eec26d19fd3f49b75ab371e04ef03a25752315dfd026e9b5197562c7d
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD53b7ba00b3b1bf5ab6776755cfa7308f6
SHA1285ac79fdd8544a90a3798ce562050a7c8cd52f0
SHA256acc75ea60727be07a50add794eb0b446a95cbc68bb743eb877f74d0b6bd5cfd1
SHA512cd99a73b6a89d3194cb5d0414f9e95719d95dc301a332f30584ff4b65a15fea8272829cf42a985cc8b9acb8e67ef669ad6ddcefc2da552239083e386df88f0aa
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C:\Users\Admin\AppData\Local\a867201c-7ce3-437f-90a0-031915e87e54\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
Filesize819KB
MD53d18b4d0c8a37c764f5d1258c346988f
SHA1406d89e9ada014fc30999b0e68ecffc3efb6c5a1
SHA2565d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3
SHA51259b4d499cf80ab003f7fdb699dc0ccb26cd85676557f8e68172fd7381d36f66e5ab85a930eafa37e13e20298faf039e462f2385570aac810762b3e6cb93fd4c5