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Analysis
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max time kernel
142s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
30/04/2024, 20:08
Static task
static1
Behavioral task
behavioral1
Sample
a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
Resource
win10v2004-20240419-en
Behavioral task
behavioral2
Sample
a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
Resource
win11-20240426-en
General
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Target
a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
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Size
763KB
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MD5
0e2d81150e390967adede63bb8797e8b
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SHA1
3a17122d08cb7b3b3b9628fa3d89871a6b0d1e05
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SHA256
a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07
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SHA512
0e983af8fc72200f7e4a350abe88a4ddd31a99b94b0b11f3b9e81373fcf320685f4089cbcff206ba432a43472e52d1f34ef3794b93726872df97b8dad2d01d5e
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SSDEEP
12288:wvrnDlo7dMeseUgi6b/pUqTpSNrdWTvFUwpFj8y6FC1qk7EnocqcbTes1tWvzK:wK7dvseUWJTcu9FjgkKo+bTeIEz
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.bgjs
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offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0863PsawqS
Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/4316-2-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4316-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4316-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5100-3-0x0000000003830000-0x000000000394B000-memory.dmp family_djvu behavioral2/memory/4316-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4316-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3848-40-0x0000000000400000-0x0000000000537000-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 4604 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c8266ad8-aa02-4971-a4c5-463bdf0df264\\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe\" --AutoStart" a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.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 1 api.2ip.ua 2 api.2ip.ua 7 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 5100 set thread context of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 1396 set thread context of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.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 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 3848 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 3848 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 5100 wrote to memory of 4316 5100 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 80 PID 4316 wrote to memory of 4604 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 81 PID 4316 wrote to memory of 4604 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 81 PID 4316 wrote to memory of 4604 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 81 PID 4316 wrote to memory of 1396 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 82 PID 4316 wrote to memory of 1396 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 82 PID 4316 wrote to memory of 1396 4316 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 82 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86 PID 1396 wrote to memory of 3848 1396 a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5100 -
C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4316 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c8266ad8-aa02-4971-a4c5-463bdf0df264" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4604
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C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1396 -
C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3848
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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
MD5422a081e58bf330679ef48dc46d7a1d5
SHA12636af2dca0b8da050cceb3302ca6c76fb322ecd
SHA256cdede115b447b845285b6436b9aa5e561a9711c30cf89d2be2a78a4e0dc88af7
SHA51277354ea7d10f2a96d715e2f8450ca2e8322d2af29a0fb4b178e5dc3c90a20c7bb8651fb36aa83ab33616505d71c3175988d1ba959024a9e035270d2d5823ab35
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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
MD5c035ca71bf29f20c3c77c5c7f50a94db
SHA155571b3873c828fda3c2ef390c3c373e14f4bde2
SHA256c40cf8860b308209c17a277c56d0407cfc6dcde85a165f735232ac607739863f
SHA5120b2fba0b35d10458d15f2fb68a9eb541aacbd959db7fa0527f38220e384c932896063a7d62e208140b6f85c5d8bf4b1b840b85892eebee306d066f5b696c80be
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5d7e9ba21afbc360a832c90c77100cb7c
SHA1dc90bb381814fb24c9f962c67b9009851aa33961
SHA256751f7b4236bcf02e3ed621fd23322f1c26d6c57b83f76183907b8d8d27844a83
SHA5120294dcc1b32e536c186fe8f4a2b8b9de8a838d2e98a08ba1502fddc3dbe4ac4284a879c8d47a1847a73bef4c0713beb9786e8b117b99650f5cfeba0d20ba2b1d
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C:\Users\Admin\AppData\Local\c8266ad8-aa02-4971-a4c5-463bdf0df264\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
Filesize763KB
MD50e2d81150e390967adede63bb8797e8b
SHA13a17122d08cb7b3b3b9628fa3d89871a6b0d1e05
SHA256a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07
SHA5120e983af8fc72200f7e4a350abe88a4ddd31a99b94b0b11f3b9e81373fcf320685f4089cbcff206ba432a43472e52d1f34ef3794b93726872df97b8dad2d01d5e