Analysis
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max time kernel
147s -
max time network
153s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-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 behavioral2/memory/4832-2-0x0000000004B30000-0x0000000004C4B000-memory.dmp family_djvu behavioral2/memory/1352-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1352-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1352-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1352-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1352-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1872-37-0x0000000000400000-0x0000000000537000-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:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\19faccef-c96b-4b56-946c-60706f04a86f\\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 1 api.2ip.ua 2 api.2ip.ua 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exedescription pid process target process PID 4832 set thread context of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 set thread context of 1872 4184 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 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 1872 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 1872 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exedescription pid process target process PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4832 wrote to memory of 1352 4832 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1352 wrote to memory of 420 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe icacls.exe PID 1352 wrote to memory of 420 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe icacls.exe PID 1352 wrote to memory of 420 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe icacls.exe PID 1352 wrote to memory of 4184 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1352 wrote to memory of 4184 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 1352 wrote to memory of 4184 1352 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe 36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe PID 4184 wrote to memory of 1872 4184 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:4832 -
C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1352 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\19faccef-c96b-4b56-946c-60706f04a86f" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:420 -
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:4184 -
C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe"C:\Users\Admin\AppData\Local\Temp\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1872
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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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
MD59f3e8ae96b2e67ad8a39ee8c2dab86ec
SHA13dddcc6f5beca9dfbc90a6516dbc4662027d8b81
SHA256cec926e2092931a83673a8020009c6a6868bf910d2bd0115540fde75df1a734f
SHA51223c98a3f3612cb67f0e7c9478b42d114779c91efb61363a46cb357b0ed11984ed1237c7b3ebe229daa3797187cdba34048205b2894ac8fc371861888d0282c70
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5490b51aac279d143301e4f3290d5f07e
SHA10bd8c7c79b2575572a089c4b22d9a886e1b4e0ea
SHA2564a44ba4145e063f476300c3a09a78d66b1091f05c858133edf0cd774eb518c34
SHA512bbaf65d97fe27bf3f8758df77d9297cd2b630b7130770dc7f28de4acbe5ace1e8af6152a7dc2ec1cd43edfbf0269c16cb7776fe323f1cb50a77526a37e65bd04
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C:\Users\Admin\AppData\Local\19faccef-c96b-4b56-946c-60706f04a86f\36318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6.exe
Filesize710KB
MD59ea4b9975ee6d846aefb37abc7f6856a
SHA18800a4603c86569ea6bb4e851e03fcf24c541eec
SHA25636318417c0dea7d574b36ce5fdfa39ad80bda29257b82fc6d7137a8d09920fa6
SHA512befdf67e3d7fcb5db5e51f6ac775bd8781e3692aea1030479a4972f6d51bdb2194c24d18c00d2f0df6f252a516be5332d58bf1df7ed4074f1eac12de768ce57e