Analysis
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max time kernel
15s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
22-05-2024 13:08
Static task
static1
Behavioral task
behavioral1
Sample
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Resource
win10v2004-20240508-en
Errors
General
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Target
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
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Size
710KB
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MD5
3b8a963e6b19ad273243a1a31c8daca5
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SHA1
a1e84e3b6d68892d95427fb0d2602982b0ed3763
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SHA256
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35
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SHA512
c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561
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SSDEEP
12288:uZFvwaeEjEzNrkoB7l2sBag8RObTEJtV8iHBB3d6cGdAQ9GWmJK4nVDq8Xw7K5qg:uZFYnEjGNwoB7fdzEJt2iHBBMRdLEJKU
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
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extension
.vehu
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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
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Signatures
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Detected Djvu ransomware 9 IoCs
Processes:
resource yara_rule behavioral1/memory/1548-4-0x0000000004660000-0x000000000477B000-memory.dmp family_djvu behavioral1/memory/2088-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2088-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2088-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2088-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2720-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2720-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2720-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2720-47-0x0000000000400000-0x0000000000537000-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:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b55945a7-6775-4daf-bd42-7fd9d261a582\\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe\" --AutoStart" ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.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 3 api.2ip.ua 5 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription pid process target process PID 1548 set thread context of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 set thread context of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exepid process 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 2720 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 2720 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription pid process target process PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 1548 wrote to memory of 2088 1548 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2088 wrote to memory of 2668 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 2088 wrote to memory of 2668 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 2088 wrote to memory of 2668 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 2088 wrote to memory of 2668 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 2088 wrote to memory of 2636 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2088 wrote to memory of 2636 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2088 wrote to memory of 2636 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2088 wrote to memory of 2636 2088 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2636 wrote to memory of 2720 2636 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1548 -
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b55945a7-6775-4daf-bd42-7fd9d261a582" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2668 -
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2636 -
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2720
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x01⤵PID:2572
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x11⤵PID:2244
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
MD50c754e2ecdd4617b07c18d57425035d3
SHA10817f345cb800df1857207aa270536ab49b42b74
SHA25675aebf127b9ce0a97e9e75b726a49c651ed6b133ea36f6ba2783af1e0e7e50aa
SHA51299438b1bf5d85e8425642cd67a2d782a50ce269fc8f58ee3172700ed022846c0849ce297ee9ac5d61d8e946a33c967d4625730099d6c8528040229467c3808bb
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD5f5f048963677452355c91de07524bca3
SHA1a36f18d045aa56a4e224fc2dc5317c2d0fdecb82
SHA256e62e4fe53936a5f6c57dafa5f3b155d2c89945157feb672760fd2c4b9a11475d
SHA5125063def7678883f87059f410853c42630a9b8cfe24c982ca07690eff7d12fbf6416d4dce5095513ed3d87c8fb4944550498ceabe0a3590347488735d5177bba3
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD534ecab7fabff5f07c01f75cbe1507996
SHA1befa0dcddfb027eae4238732560048b490806410
SHA25691f5be14ae2ada5042de965c8b32bc35f5bd20d54ba93a3b3406de03f24823f4
SHA512bc99c44b63692fb413a8d7980abb7f522b95979813b6e2782281d34db0ceeed5857fa9741b6cca57f5cea100bb1e0ae3b6e37a820329d258c3137b12a22c8e3d
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Filesize
68KB
MD529f65ba8e88c063813cc50a4ea544e93
SHA105a7040d5c127e68c25d81cc51271ffb8bef3568
SHA2561ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
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C:\Users\Admin\AppData\Local\b55945a7-6775-4daf-bd42-7fd9d261a582\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Filesize710KB
MD53b8a963e6b19ad273243a1a31c8daca5
SHA1a1e84e3b6d68892d95427fb0d2602982b0ed3763
SHA256ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35
SHA512c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561