Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
09/04/2024, 08:01
Static task
static1
Behavioral task
behavioral1
Sample
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
Resource
win11-20240221-en
General
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Target
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
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Size
770KB
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MD5
853cc78a670e6ac494a7daf873b84d2b
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SHA1
65034a73ece0f47a512b0169b4bb8d7327eb5ee7
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SHA256
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6
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SHA512
384379dc5bc40d1690bc1ed94c324e2b24dc17ad1ea08a41bcc66350a6619d1f2a51a1111b8b9c2e8fd7f5e21c291eb1f7b00ce942dc4666ddeff11acb357d83
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SSDEEP
12288:sqyhRwn3MMk9eh+cKpLJn0hQ30RDIyZ4b3XmuL/UysIJmvPb2nnJPZ33aDw4o4:GW3Ao+cKx0BktGuLsysFnb8JPZ3qDpR
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.uazq
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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/4036-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp family_djvu behavioral1/memory/732-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/732-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/732-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/732-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/732-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4568-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4568-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4568-23-0x0000000000400000-0x0000000000537000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1640 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d8acdbf3-1d14-4016-af26-97057cb9b9c6\\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe\" --AutoStart" ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.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 6 api.2ip.ua 7 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4036 set thread context of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4548 set thread context of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 -
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 3368 4568 WerFault.exe 99 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 4036 wrote to memory of 732 4036 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 95 PID 732 wrote to memory of 1640 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 96 PID 732 wrote to memory of 1640 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 96 PID 732 wrote to memory of 1640 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 96 PID 732 wrote to memory of 4548 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 97 PID 732 wrote to memory of 4548 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 97 PID 732 wrote to memory of 4548 732 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 97 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99 PID 4548 wrote to memory of 4568 4548 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4036 -
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:732 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\d8acdbf3-1d14-4016-af26-97057cb9b9c6" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1640
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C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4548 -
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask4⤵PID:4568
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4568 -s 5685⤵
- Program crash
PID:3368
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 380 -p 4568 -ip 45681⤵PID:1628
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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 --mojo-platform-channel-handle=3696 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:81⤵PID:1680
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\d8acdbf3-1d14-4016-af26-97057cb9b9c6\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
Filesize770KB
MD5853cc78a670e6ac494a7daf873b84d2b
SHA165034a73ece0f47a512b0169b4bb8d7327eb5ee7
SHA256ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6
SHA512384379dc5bc40d1690bc1ed94c324e2b24dc17ad1ea08a41bcc66350a6619d1f2a51a1111b8b9c2e8fd7f5e21c291eb1f7b00ce942dc4666ddeff11acb357d83