Analysis
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max time kernel
149s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
09/04/2024, 09:26
Static task
static1
Behavioral task
behavioral1
Sample
235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
Resource
win11-20240221-en
General
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Target
235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
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Size
771KB
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MD5
ee8058320fb4a8fb8246a79f2bdc6201
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SHA1
97cc9afb26cc57eb82daa74319aaa8375175ff05
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SHA256
235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d
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SHA512
6a1b7cfc6a617a4cb9797cf4ee7791c5bb30ad8156683080e7fad00474d61fb8b1392bdfde658953d44cc41aeddfbab5ce836fc8b6b4ddae24064462942f8028
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SSDEEP
12288:OjfHuSUI79taNFbFZeZhqpPqnLyh8lEhvibAeVPao00kVCzk1vkmJuK0EqAtphYn:Hvqn2FbPeZhsphvaatuaqeOeW
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
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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0859PsawqS
Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/1236-2-0x0000000004B40000-0x0000000004C5B000-memory.dmp family_djvu behavioral2/memory/2008-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2008-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2008-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2008-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2008-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3852-39-0x0000000000400000-0x0000000000537000-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 1592 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2930051783-2551506282-3430162621-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\dd539935-a01b-42b2-97a3-97d65db79804\\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe\" --AutoStart" 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.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 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1236 set thread context of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 2964 set thread context of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.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 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 3852 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 3852 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 1236 wrote to memory of 2008 1236 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 77 PID 2008 wrote to memory of 1592 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 78 PID 2008 wrote to memory of 1592 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 78 PID 2008 wrote to memory of 1592 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 78 PID 2008 wrote to memory of 2964 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 79 PID 2008 wrote to memory of 2964 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 79 PID 2008 wrote to memory of 2964 2008 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 79 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82 PID 2964 wrote to memory of 3852 2964 235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1236 -
C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2008 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\dd539935-a01b-42b2-97a3-97d65db79804" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1592
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C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2964 -
C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe"C:\Users\Admin\AppData\Local\Temp\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3852
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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
MD5fc5408c48a55314c72e200b74330cac4
SHA17e8889ec3189a40e6078088927bf3612753fa628
SHA2567ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4
SHA512481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77
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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
MD5c264f9609a6390410c90b229e5c59d34
SHA17bc9a205f902109484500954f3e7b2de607505f0
SHA2564090768f0208db163f0591813d7e3bd61b7a9243fb92a7469f3bab140e621159
SHA512f96f9688b90d2343375d6553fe2d681076846fe691f625f0a9bf8f5b9d19d03575e29b41024c5e33937e58412283df24df0887a401698018b9e136f538dc8ab8
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD51c194023f0858da443d5ee0fd628df5e
SHA159b06cd1036a2e26d93e1961fceddb921a9f2927
SHA25680ea6b0b8d354424266933acd66eb69219fe3606d38f17b7d4f59c9cf3c741e8
SHA5121e9a26b85793cbe52327e2603ea54cd517dddb0ce11eb5e680206e046f645a3567f7f67acbfcd5bd60863b8fa60a4e15d63b7ac65eb5328b7df23a6e498fbe77
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C:\Users\Admin\AppData\Local\dd539935-a01b-42b2-97a3-97d65db79804\235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d.exe
Filesize771KB
MD5ee8058320fb4a8fb8246a79f2bdc6201
SHA197cc9afb26cc57eb82daa74319aaa8375175ff05
SHA256235de559e03d9801d51c0fb033284e3a74ede0fbc24d9a064a35af879f64ff3d
SHA5126a1b7cfc6a617a4cb9797cf4ee7791c5bb30ad8156683080e7fad00474d61fb8b1392bdfde658953d44cc41aeddfbab5ce836fc8b6b4ddae24064462942f8028