Analysis
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max time kernel
149s -
max time network
158s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
16/04/2024, 02:25
Static task
static1
Behavioral task
behavioral1
Sample
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Resource
win11-20240412-en
General
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Target
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
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Size
851KB
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MD5
6067c1f7658f5862dcce964ae8a9b049
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SHA1
de1c58620017ed7f4c11b5cf00321aa203425b2f
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SHA256
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651
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SHA512
5c863b1977ac2e742638d96b9933222b475338b8f79501edd35fded93790ef4f8391896d70f1aa3197a317a3821c06f654af05804e01f23d47c1208a873cf138
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SSDEEP
12288:QEO9cG9msbbKVTvHio+ZnIaXNqft+O6j22gfphHTAg1ZEJIrV5tg:nO9esSTknl9qf4i2gnzAb2V5tg
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/1032-2-0x0000000004CC0000-0x0000000004DDB000-memory.dmp family_djvu behavioral2/memory/940-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/940-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/940-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/940-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/940-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2304-39-0x0000000000400000-0x0000000000537000-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 3168 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-243033537-3771492294-1461557691-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0f63bfa3-f7b3-48cd-9836-665c8b5b173a\\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe\" --AutoStart" 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.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 1032 set thread context of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 4704 set thread context of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.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 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 2304 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 2304 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 1032 wrote to memory of 940 1032 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 81 PID 940 wrote to memory of 3168 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 82 PID 940 wrote to memory of 3168 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 82 PID 940 wrote to memory of 3168 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 82 PID 940 wrote to memory of 4704 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 83 PID 940 wrote to memory of 4704 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 83 PID 940 wrote to memory of 4704 940 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 83 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4704 wrote to memory of 2304 4704 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1032 -
C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:940 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0f63bfa3-f7b3-48cd-9836-665c8b5b173a" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3168
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C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4704 -
C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2304
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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
MD5a796999c503d181cf67725ed32be3bfe
SHA161bed07e1ca6dd7325b65653307671f95cd943bc
SHA25654a3267f8825a4819df16f5448a9829081f9030088a02fa981222b43ec0fb392
SHA5125856964f0d0b6624577ce69751eab308994ef106eaf1de54fa4544caf362f4fbb94f99ceb4f9865746d01a9edce3dcdd685ad3767d761bdbf591ab20ec88081e
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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
MD5dd5f4bac57a7606f516313488ecef873
SHA16b7851751edb738632d7eb5aaf6c7f909205da4b
SHA25682aa3bd0e46e145590efbdc5916c42c0492f18022b71cba1c3d0470445619168
SHA5123e8d9f1f1d076c596cea8bc750c031a976d059cb007f81075b07ec8ec9c1560d6b8d1148be6638a367c720e537b175fdee481cc71502f3d6f4832ef6f6bc714d
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5a30642c639ac8507ccadc9c528d21cf3
SHA1a1769303d52b21f6dd6eaec90438814fa9fb3d40
SHA256be70ea33e19cdc215c2a02246aecea11251de83bb8b6e4d04eeac211b6c40840
SHA512d010fc0c07dd1395bc39fbd2cb965223bd062555e9bb6d864ae7b99db593205815dfcad85093da3cd335153a52cabf113aa525b418b54a8fbb380aaf6f14b1f8
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C:\Users\Admin\AppData\Local\0f63bfa3-f7b3-48cd-9836-665c8b5b173a\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Filesize851KB
MD56067c1f7658f5862dcce964ae8a9b049
SHA1de1c58620017ed7f4c11b5cf00321aa203425b2f
SHA2569e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651
SHA5125c863b1977ac2e742638d96b9933222b475338b8f79501edd35fded93790ef4f8391896d70f1aa3197a317a3821c06f654af05804e01f23d47c1208a873cf138