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Analysis
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max time kernel
143s -
max time network
125s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
23/05/2024, 04:02
Static task
static1
Behavioral task
behavioral1
Sample
519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
Resource
win11-20240508-en
General
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Target
519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
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Size
711KB
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MD5
07116bba4c9f651cf2c4327698483aa0
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SHA1
02a9fc8459c6ad451ba571146d5211664b4276d3
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SHA256
519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d
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SHA512
d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2
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SSDEEP
12288:o4Amb9t3hc0lMxKvp30GfaOztaHNdvPRROnLTfp1WPhbFXMNZMCHcBiFBcDW7X:o49bLLgQ50GfaOzCnvPRWLV8PRFXMPHj
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 16 IoCs
resource yara_rule behavioral2/memory/2316-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp family_djvu behavioral2/memory/2336-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2336-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2336-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2336-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2336-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1548-37-0x0000000000400000-0x0000000000537000-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
pid Process 3764 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\55e7ed03-4bf7-409c-a01f-3a4731ef8a32\\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe\" --AutoStart" 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.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 6 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2316 set thread context of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 4272 set thread context of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 -
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 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 1548 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 1548 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2316 wrote to memory of 2336 2316 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 79 PID 2336 wrote to memory of 3764 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 80 PID 2336 wrote to memory of 3764 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 80 PID 2336 wrote to memory of 3764 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 80 PID 2336 wrote to memory of 4272 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 81 PID 2336 wrote to memory of 4272 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 81 PID 2336 wrote to memory of 4272 2336 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 81 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84 PID 4272 wrote to memory of 1548 4272 519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2316 -
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\55e7ed03-4bf7-409c-a01f-3a4731ef8a32" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3764
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C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4272 -
C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1548
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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
MD57575c39a544943a68ce6e709c586005a
SHA14874b30bd1d455b28a95c4e21c5aecd1ea043d7a
SHA2564737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8
SHA512abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1
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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
MD5d61710168ddd3aeac4ccb81d7fdac11f
SHA1007ade683162f8313ea23e5cd43acb4e5afeb81d
SHA256606c25ba7e67e29251b24345c7fc31d5f4a6a9933e7a8f851ae2545866adb68c
SHA5127ea015bb5106115217684488bf141fb572614a1af01917f61bdb858a091ff6b1596d186540f470b806cec68fa1f040378e2a17695a331faf4d0225efe1bc6b61
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD54671e9cc8e3d2a03236857ce07168852
SHA192b36638188fe2ef5bfdfefed98957f62c4ac5fa
SHA25684bd46ee716c91b7de8a428051621f8911e7c2fdbf2820dc0bbf3edea222ddbb
SHA512fb7c40c37f5995fbd178d4ec51719173775c666de3a1f96da9ce21fc5d8b84810fa2b4b96a0193165bb9734318627864e600f91ccea13be6fb07914a21ca6b02
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C:\Users\Admin\AppData\Local\55e7ed03-4bf7-409c-a01f-3a4731ef8a32\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
Filesize711KB
MD507116bba4c9f651cf2c4327698483aa0
SHA102a9fc8459c6ad451ba571146d5211664b4276d3
SHA256519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d
SHA512d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2