Analysis
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max time kernel
142s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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 16 IoCs
Processes:
resource yara_rule behavioral1/memory/2568-2-0x0000000004A00000-0x0000000004B1B000-memory.dmp family_djvu behavioral1/memory/3876-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3876-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3876-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3876-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3876-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2084-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe -
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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ef894ec3-4bd5-4bbe-a198-847e25555038\\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 5 api.2ip.ua 6 api.2ip.ua 20 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription pid process target process PID 2568 set thread context of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 set thread context of 2084 3772 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 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 2084 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe 2084 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exeed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exedescription pid process target process PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 2568 wrote to memory of 3876 2568 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3876 wrote to memory of 5024 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 3876 wrote to memory of 5024 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 3876 wrote to memory of 5024 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe icacls.exe PID 3876 wrote to memory of 3772 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3876 wrote to memory of 3772 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3876 wrote to memory of 3772 3876 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe PID 3772 wrote to memory of 2084 3772 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:2568 -
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3876 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\ef894ec3-4bd5-4bbe-a198-847e25555038" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:5024 -
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:3772 -
C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe"C:\Users\Admin\AppData\Local\Temp\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2084
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3440,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=4084 /prefetch:81⤵PID:4188
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
MD57d3de5a292193702226d0d863ee59f71
SHA11f32d6ce7d346a70e372a3b207c66c5fd38a9d6c
SHA2563621bddbfef513a7e863c6a68d126b40873d89c19c1db3f367642116b0eb6146
SHA512a186859759f809a5aaf528cc22ecc6da696212e9eeae492a917ef3758d95623991371c4461da9384eb9618b40b32350cb52f5fc7734206d17e6fc8ae7b2e8c1e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5df09d9f4a71a7a949e5be0aecd420ec1
SHA12eef08b902c38c6481d76738f252216431cfdf36
SHA25633d1d1238799d8ec9257f449e7ea08827ad3b5df4237e767d5df8b433e0f8294
SHA512e54d964b6a9be2f37acd47b7795c9dc1fb711d9078c406159f1048453f39127876e514ed3f3b1508fa7d43142f2aca4f79d2d1f3abc28ad69b89ad0016430f8d
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C:\Users\Admin\AppData\Local\ef894ec3-4bd5-4bbe-a198-847e25555038\ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35.exe
Filesize710KB
MD53b8a963e6b19ad273243a1a31c8daca5
SHA1a1e84e3b6d68892d95427fb0d2602982b0ed3763
SHA256ed2fd71789f08260d4fee1685ef35e0b1090e4b4b3667851a021c99364a86b35
SHA512c7560121fa534a6945eca35a395e57683157ce2942e9bfebc69bad16013c2c864e3bf2b8f7b39a6dbdfa4a00d6d63cefbec785b6cdaa844123c97b44999f6561