Analysis
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max time kernel
149s -
max time network
151s -
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 15:46
Static task
static1
Behavioral task
behavioral1
Sample
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
Resource
win11-20240508-en
General
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Target
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
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Size
710KB
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MD5
9ea4b9975ee6d846aefb37abc7f6856a
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SHA1
8800a4603c86569ea6bb4e851e03fcf24c541eec
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SHA256
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6
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SHA512
befdf67e3d7fcb5db5e51f6ac775bd8781e3692aea1030479a4972f6d51bdb2194c24d18c00d2f0df6f252a516be5332d58bf1df7ed4074f1eac12de768ce57e
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SSDEEP
12288:LKlacskiQvrj1WwBq2kXWpOpNECzxBbXppBiK0IQjBI14RM1kRx5:LKl5F1j0bECnbXpDijBDO6
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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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 behavioral1/memory/1132-1-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1132-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1900-4-0x0000000004AB0000-0x0000000004BCB000-memory.dmp family_djvu behavioral1/memory/1132-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1132-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1132-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1544-35-0x0000000000400000-0x0000000000537000-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:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cf33ec57-1961-4e7b-87f1-469c6d2eb487\\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe\" --AutoStart" 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.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 6 api.2ip.ua 7 api.2ip.ua 15 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exedescription pid process target process PID 1900 set thread context of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 set thread context of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.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:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exepid process 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 1544 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 1544 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exedescription pid process target process PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1900 wrote to memory of 1132 1900 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1132 wrote to memory of 744 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe icacls.exe PID 1132 wrote to memory of 744 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe icacls.exe PID 1132 wrote to memory of 744 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe icacls.exe PID 1132 wrote to memory of 3232 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1132 wrote to memory of 3232 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1132 wrote to memory of 3232 1132 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 3232 wrote to memory of 1544 3232 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1900 -
C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1132 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\cf33ec57-1961-4e7b-87f1-469c6d2eb487" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:744 -
C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1544
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
MD5fe824b6fbf8d4cfd627811144e866c99
SHA1eea61c3198aad016b5db8ec2ae46496dd4e61817
SHA2564b07b572acfb3eff9bbea8a2bc47f145a0af7a718240d179845d0c3a09c91f43
SHA5124d65abb0da8b4d463a7ddbe7a897ffe894f12fc0cf2315dae47d5c8188a1fb13249d1ae6b6967e9c1b6baded0d087337937540a2f7c8c0102011d785e2c74813
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD51846e07a19c4f258343b7f0cf7c1f1a5
SHA1260856538694f4f918abad786fe1e20a04f3edbf
SHA256d74b625e0295fd57f6d6295ca049cc5e241d72c6ea3c7c9361688d02846b02e1
SHA512b88b4ac2df040fcc759ae329d493da9855f7f97934faf8a372a2ba8aff2709c34e2d3cd69a98bf851ab0c7379867548e3b46859e052b70527d0d625158cc446e
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C:\Users\Admin\AppData\Local\cf33ec57-1961-4e7b-87f1-469c6d2eb487\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
Filesize710KB
MD59ea4b9975ee6d846aefb37abc7f6856a
SHA18800a4603c86569ea6bb4e851e03fcf24c541eec
SHA25636318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6
SHA512befdf67e3d7fcb5db5e51f6ac775bd8781e3692aea1030479a4972f6d51bdb2194c24d18c00d2f0df6f252a516be5332d58bf1df7ed4074f1eac12de768ce57e