Analysis
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max time kernel
131s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-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 9 IoCs
resource yara_rule behavioral1/memory/4432-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp family_djvu behavioral1/memory/4424-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4224-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4224-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4224-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2356 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3ca97f8a-28c1-4b94-82ba-985358f5446d\\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe\" --AutoStart" 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 16 api.2ip.ua 18 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4432 set thread context of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 2096 set thread context of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 3016 4224 WerFault.exe 101 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4432 wrote to memory of 4424 4432 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 93 PID 4424 wrote to memory of 2356 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 96 PID 4424 wrote to memory of 2356 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 96 PID 4424 wrote to memory of 2356 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 96 PID 4424 wrote to memory of 2096 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 98 PID 4424 wrote to memory of 2096 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 98 PID 4424 wrote to memory of 2096 4424 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 98 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101 PID 2096 wrote to memory of 4224 2096 5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe 101
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:4432 -
C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4424 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\3ca97f8a-28c1-4b94-82ba-985358f5446d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2356
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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:2096 -
C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe"C:\Users\Admin\AppData\Local\Temp\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe" --Admin IsNotAutoStart IsNotTask4⤵PID:4224
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4224 -s 5685⤵
- Program crash
PID:3016
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4224 -ip 42241⤵PID:3188
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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 --field-trial-handle=4120,i,7064649017625232947,17746804975634116675,262144 --variations-seed-version --mojo-platform-channel-handle=3836 /prefetch:81⤵PID:4712
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\3ca97f8a-28c1-4b94-82ba-985358f5446d\5d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3.exe
Filesize819KB
MD53d18b4d0c8a37c764f5d1258c346988f
SHA1406d89e9ada014fc30999b0e68ecffc3efb6c5a1
SHA2565d1e47acd2d476363bb2d47fc805e72d1636bbdaf3d2d9d90559a725add863e3
SHA51259b4d499cf80ab003f7fdb699dc0ccb26cd85676557f8e68172fd7381d36f66e5ab85a930eafa37e13e20298faf039e462f2385570aac810762b3e6cb93fd4c5