Analysis
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max time kernel
144s -
max time network
126s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
22-05-2024 10:20
Static task
static1
Behavioral task
behavioral1
Sample
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe
Resource
win11-20240426-en
General
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Target
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe
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Size
707KB
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MD5
5855e0aa6fddd49c2a10916168549895
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SHA1
961fbc732efcfc4842ab4bd356be530dfb383149
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SHA256
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742
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SHA512
4af9581ca386412911b91de2fb6bc1ab14a3a98a6b5f72077a243b30ccf894c6e0de7ad906587c015d5776271faaff6d6aebf9f09506c1274b06d20607f1ecfb
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SSDEEP
12288:mQ2yr8271g1GoGbPFeCeUvKf42EOzRFSEyITOWPg5sI2ffJCP9VNwMO:mQ2LcPFx5vKw2EO1o5i7fBww
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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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/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: 0871PsawqS
Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/3316-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp family_djvu behavioral2/memory/1792-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1792-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1792-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1792-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1792-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2384-37-0x0000000000400000-0x0000000000537000-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
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.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\\0666dc5e-e375-4d0c-b8fe-6ab42b638728\\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe\" --AutoStart" f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.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 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exef888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exedescription pid process target process PID 3316 set thread context of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 set thread context of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exef888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exepid process 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe 2384 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe 2384 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exef888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exef888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exedescription pid process target process PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 3316 wrote to memory of 1792 3316 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 1792 wrote to memory of 4036 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe icacls.exe PID 1792 wrote to memory of 4036 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe icacls.exe PID 1792 wrote to memory of 4036 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe icacls.exe PID 1792 wrote to memory of 996 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 1792 wrote to memory of 996 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 1792 wrote to memory of 996 1792 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe PID 996 wrote to memory of 2384 996 f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe"C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3316 -
C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe"C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1792 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0666dc5e-e375-4d0c-b8fe-6ab42b638728" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4036 -
C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe"C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:996 -
C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe"C:\Users\Admin\AppData\Local\Temp\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2384
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
MD56728aea2631b86a76c237508d8ba9b55
SHA17a670f95cac088313f7558869162fe01c6dc0ec9
SHA256e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b
SHA512533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5
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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
MD50a3c103c6ea6c2101c4b4936cd5768c9
SHA100c903563abcd5e3ed4d8392c7d68f6c49a1c46c
SHA256b1d7c96a8451ec1d09daa5f467706c946d5bae3e17d9109597164d1b6a66ebd5
SHA512327b56f7fcbe9f2976f3289365a7865835b5fa2f0fa65c22f4540889dfa90db5352a10db4be8e4d3a76a701856904ab72bc7066b4848807a11e9f3219a5864e5
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5d4e7aab7b5444065c9d0cec65a96e46a
SHA1ead5cfb5adb69e7b6e43ec1db200cdd0d07fc4cb
SHA2562736e262f3af082048cef5f960f63f0103d8d4081215c7b5775284be3daad056
SHA51229fb98ce25b5a6eeca9fdeef1e7013c4d6d556e9786f5b007c0a984695d0c66473c4df1d4cdb21aaeb457fc933f3c8120c277c6c9f98b0eb308e63e91656fdb5
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C:\Users\Admin\AppData\Local\0666dc5e-e375-4d0c-b8fe-6ab42b638728\f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742.exe
Filesize707KB
MD55855e0aa6fddd49c2a10916168549895
SHA1961fbc732efcfc4842ab4bd356be530dfb383149
SHA256f888bb2bdc08ff5d6bf8b5f68aa7bee1265484d644611bab8cad8e1e31422742
SHA5124af9581ca386412911b91de2fb6bc1ab14a3a98a6b5f72077a243b30ccf894c6e0de7ad906587c015d5776271faaff6d6aebf9f09506c1274b06d20607f1ecfb