Analysis
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max time kernel
143s -
max time network
126s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
22-05-2024 12:52
Static task
static1
Behavioral task
behavioral1
Sample
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Resource
win11-20240419-en
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 15 IoCs
Processes:
resource yara_rule behavioral2/memory/3772-1-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4644-4-0x0000000004B50000-0x0000000004C6B000-memory.dmp family_djvu behavioral2/memory/3772-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3772-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3772-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3772-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/244-37-0x0000000000400000-0x0000000000537000-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:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\525d689b-2da8-4a8a-b3f6-6eb7b61f15b8\\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 1 api.2ip.ua 2 api.2ip.ua 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription pid process target process PID 4644 set thread context of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 set thread context of 244 3376 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 4 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exepid process 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 244 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 244 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription pid process target process PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 4644 wrote to memory of 3772 4644 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 3384 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 3772 wrote to memory of 3384 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 3772 wrote to memory of 3384 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 3772 wrote to memory of 3376 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 3376 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 3376 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3376 wrote to memory of 244 3376 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:4644 -
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:3772 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\525d689b-2da8-4a8a-b3f6-6eb7b61f15b8" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3384 -
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:3376 -
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:244
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
MD560f44c80825b67cd60f132b9dea9ea73
SHA16f2a102b6356463ed58b65d8a9c224e69883811c
SHA256e48e917811f7cfb740ae8982cac2409325771f0c1389053d1a620f927ad906b9
SHA51262006d2709e10a4faab225993ef027f1ff3cad3dd3982d1c7165afd1903061cddd07dfda7102ba2fcf7811c0fed6a25ef11cbf7e849b5b4dc67b0815d78ed883
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD52045d2c5f81d672f1d8b315193109961
SHA1b2b494cb45dbc7895190d6193d7ab3c53b9b53b5
SHA256d0067e894fc747589f9ebe45d752a683a186f5bdceca89217729186c86c248a0
SHA512e912812158d7c77ad18bd0a178d317e50d57e63e880ccf67264c6dd0e9803eeeff0371d59806263d760deea3265fe604b944e6e5ae6c737359e5b11d9fb22d31
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C:\Users\Admin\AppData\Local\525d689b-2da8-4a8a-b3f6-6eb7b61f15b8\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Filesize710KB
MD53b8a963e6b19ad273243a1a31c8daca5
SHA1a1e84e3b6d68892d95427fb0d2602982b0ed3763
SHA256ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35
SHA512c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561