Analysis
-
max time kernel
146s -
max time network
157s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
15/04/2024, 19:21
Static task
static1
Behavioral task
behavioral1
Sample
56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe
Resource
win11-20240412-en
General
-
Target
56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe
-
Size
819KB
-
MD5
b1e4c479c6bfc09e7af5e586b47a5215
-
SHA1
a5fed6e61786e5042ffcea44250078f0bab868c5
-
SHA256
56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525
-
SHA512
f1a46d9d8e1485ea37d29ede20fc2c2c7a7765b27f69e8d366956ca5f675bf7f69d9e0e3f5fb2a2bdc72b16499323a8c3908e2416fc26d9b572fc1fa643227e2
-
SSDEEP
12288:uMW8zlkzKDV/gRojVmiNY1XsJroBL6JN5dwP7Pqc4vD9OsfdRr9f2h91kq:uMbYRojVmiSNy82srWOOxf2jmq
Malware Config
Extracted
djvu
http://sajdfue.com/test1/get.php
-
extension
.uajs
-
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
-
payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.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/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
-
Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/496-2-0x0000000004C90000-0x0000000004DAB000-memory.dmp family_djvu behavioral2/memory/1204-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3916-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
-
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3988 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1734202354-1504186683-2192872036-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\21208da0-5cf5-478a-856b-e2a4cb001de4\\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe\" --AutoStart" 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.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 496 set thread context of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 4384 set thread context of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 3916 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 3916 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 496 wrote to memory of 1204 496 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 81 PID 1204 wrote to memory of 3988 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 82 PID 1204 wrote to memory of 3988 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 82 PID 1204 wrote to memory of 3988 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 82 PID 1204 wrote to memory of 4384 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 83 PID 1204 wrote to memory of 4384 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 83 PID 1204 wrote to memory of 4384 1204 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 83 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86 PID 4384 wrote to memory of 3916 4384 56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe"C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:496 -
C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe"C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1204 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\21208da0-5cf5-478a-856b-e2a4cb001de4" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3988
-
-
C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe"C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4384 -
C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe"C:\Users\Admin\AppData\Local\Temp\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3916
-
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD53c6a98dff2c8e5d41183fb934602bccf
SHA1389eea4f6c8b9a19dd6efd65b2c979feeb4262a7
SHA2568c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8
SHA512fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5f11dea827f922440f712d952a9cc0913
SHA199997fdcce6b9ddc9de1a2e6d033264dbcca7a5a
SHA256713dddaa567c1afb2ed49cdba976a0a85fe4479b4b11a296d12793f3afac8080
SHA512d72a67f26c57be73da43f0e499ca88bc338a78de2fff5d4c9f0e5e961c15ff47aa33c04beab11dcc6c68c387179f539dbd04fd4642be8a9acdfcc1e8114f7520
-
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5993dfecfbdc32b7a445dcb0e01cce568
SHA16ecda68d263e956bdefbc7c278f72753072ed859
SHA256ef1b6364a91ec68caf63a578865a0e0841ecc578748b6538ffc9a3b4f4553591
SHA512aa093a77247c1af4a86da5dc07a664a25da3c446b26a721b60b5e9f36219a14a2a860a94728c6237488cb8e615d93e1631e2dc2efc3a2079795fafd07ca90e4b
-
C:\Users\Admin\AppData\Local\21208da0-5cf5-478a-856b-e2a4cb001de4\56f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525.exe
Filesize819KB
MD5b1e4c479c6bfc09e7af5e586b47a5215
SHA1a5fed6e61786e5042ffcea44250078f0bab868c5
SHA25656f554a175f5888a9bfb3cc17e3f010f2617f1e5d087601cc08781110e794525
SHA512f1a46d9d8e1485ea37d29ede20fc2c2c7a7765b27f69e8d366956ca5f675bf7f69d9e0e3f5fb2a2bdc72b16499323a8c3908e2416fc26d9b572fc1fa643227e2