Analysis
-
max time kernel
147s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
26-05-2024 00:42
Static task
static1
Behavioral task
behavioral1
Sample
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe
Resource
win11-20240426-en
General
-
Target
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe
-
Size
733KB
-
MD5
9998879b207a0fe12c5d5b607e67b270
-
SHA1
c8e535203f2f8661b526317a3b77ae36a23b2760
-
SHA256
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6
-
SHA512
00586e0e69824eb328e4b3cf57a866b4d03ac2aed6b8bd4421c50864182ead7341d8a104bcfe2fe68b94ade421886346a1f4ed1c90be63b5dbca9580e6509849
-
SSDEEP
12288:eiDoXN0QJAHpQnXu/wlOX0Jsln6cWCNKJWddrr/zv5ODPeb4gsk8NIUIra:eO42KZOEJsln6H8r3v5ODeb1Wea
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
-
extension
.vehu
-
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
-
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
-
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0872PsawqS
Signatures
-
Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/3056-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp family_djvu behavioral2/memory/4828-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4828-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4828-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4828-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4828-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3576-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
-
Modifies file permissions 1 TTPs 1 IoCs
-
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a9f9581e-f52a-4bbb-8043-1f978d19133a\\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe\" --AutoStart" 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.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.
Processes:
flow ioc 1 api.2ip.ua 2 api.2ip.ua 7 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exedescription pid process target process PID 3056 set thread context of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 set thread context of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exepid process 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3576 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3576 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exedescription pid process target process PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 3056 wrote to memory of 4828 3056 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 4828 wrote to memory of 868 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe icacls.exe PID 4828 wrote to memory of 868 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe icacls.exe PID 4828 wrote to memory of 868 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe icacls.exe PID 4828 wrote to memory of 2936 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 4828 wrote to memory of 2936 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 4828 wrote to memory of 2936 4828 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe PID 2936 wrote to memory of 3576 2936 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe 3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe"C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe"C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\a9f9581e-f52a-4bbb-8043-1f978d19133a" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
-
C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe"C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe"C:\Users\Admin\AppData\Local\Temp\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
1KB
MD5dd3850d9ce5a33ba453ba4d1dfb4ba51
SHA1df05b044dd14e7d009aad0398686bbfd6fff1491
SHA256e9e041a83d7f3dbd6adfeda50b7ff9d3fd1abfcfb4fc5906d481c33db7072b85
SHA512ec27ccc61d0133a76a612d5ddde2c6193f96302e17f66a75da8e1ad18ee871fe6b307e535317726449dc724331d4f48376d03201ad8d9dc2985aa0420d45b8e4
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
410B
MD5072d3653326b07c0d07e6312460e7edc
SHA1acca9c66c235d83b231f2dd9c9e14499f9c484af
SHA2566aa44fc72f6b1682e5b7bed65bd94351d48562b11015fabce6b0854be1f3e9fb
SHA512642fb332684c16fdd928ecb5531f8a0bd883cb40b3112981e29859e0fb0e7f67f1d1fb6edfd54769d1d83c1bb57ac44a08a221ecfc6028eac10777b18ea89a2a
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD508bb6a93dbdec219b93f277a1e8d9a37
SHA19eddaa60d801d0b9a317f463b4081160f50e66e2
SHA256ac06303823a1e7612f3e38a42f0a7e038ea912b1b52a83f944e523dfb874dfbb
SHA512ba3ee03bc7dfd249769050ca2dba1657b84c7843c734aa83fcc38c9d25a3805753551d3d4fac23cea5411065e166dc1dc4232638a65320ff4ea6355144bed456
-
C:\Users\Admin\AppData\Local\a9f9581e-f52a-4bbb-8043-1f978d19133a\3b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6.exeFilesize
733KB
MD59998879b207a0fe12c5d5b607e67b270
SHA1c8e535203f2f8661b526317a3b77ae36a23b2760
SHA2563b8d4ba0e0a7d9b823d29e03c865e38de1213b2673b2c59b7114551b97c0bba6
SHA51200586e0e69824eb328e4b3cf57a866b4d03ac2aed6b8bd4421c50864182ead7341d8a104bcfe2fe68b94ade421886346a1f4ed1c90be63b5dbca9580e6509849
-
memory/3056-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmpFilesize
1.1MB
-
memory/3056-1-0x0000000004A20000-0x0000000004AB9000-memory.dmpFilesize
612KB
-
memory/3576-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-35-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/3576-32-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/4828-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/4828-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/4828-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/4828-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/4828-19-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB