Analysis
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max time kernel
143s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
25-05-2024 05:13
Static task
static1
Behavioral task
behavioral1
Sample
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe
Resource
win10v2004-20240426-en
General
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Target
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe
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Size
716KB
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MD5
45e29541b72d9b115a74d1fed6354afb
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SHA1
92dcda655abeaa19d042116bdcc5ba58151ee640
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SHA256
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571
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SHA512
299aa6ac2fdc35cc8a1a655af27558cfa13a4e5018a8c8d390b6ca024821fd93ee5ac64fed5f8b9ff28b1649203f552b6868c5131ee5970d1e3cb883e7a5a0cb
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SSDEEP
12288:EL5gGXNQfNc/deHhygHrS0kv00iKHauiDsPmyr20xLpgb8BN3pt9iaFNVRa:ELTGKQpS0kvygaucsPmyr2whddXja
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 13 IoCs
Processes:
resource yara_rule behavioral1/memory/2916-2-0x0000000004610000-0x000000000472B000-memory.dmp family_djvu behavioral1/memory/2380-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2380-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2380-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2380-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-55-0x0000000000400000-0x0000000000537000-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:
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8d8b846c-08ca-4b60-8d6b-d03f85813349\\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe\" --AutoStart" 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.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 4 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exedescription pid process target process PID 2916 set thread context of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 set thread context of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exepid process 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 2496 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exedescription pid process target process PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2916 wrote to memory of 2380 2916 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2380 wrote to memory of 2684 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe icacls.exe PID 2380 wrote to memory of 2684 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe icacls.exe PID 2380 wrote to memory of 2684 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe icacls.exe PID 2380 wrote to memory of 2684 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe icacls.exe PID 2380 wrote to memory of 2752 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2380 wrote to memory of 2752 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2380 wrote to memory of 2752 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2380 wrote to memory of 2752 2380 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe PID 2752 wrote to memory of 2496 2752 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe 6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe"C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2916 -
C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe"C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2380 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\8d8b846c-08ca-4b60-8d6b-d03f85813349" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2684
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C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe"C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2752 -
C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe"C:\Users\Admin\AppData\Local\Temp\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2496
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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
MD56f6e3fca3096a0e7e7eb59d51f4a5350
SHA1c978fa12d9045c593d5e7e097037ee465e09c3b2
SHA256d27a9ba9c11dbd9c2b2bcb61a4128f457e7d15a3db20fad170588821e4003d78
SHA512c45004cb6359a32eb55f1f2ff762ab948d79991ec890ceaf988d513ff9cd4dc0168deb2235b391b43ca8d69d960ba302fde0ed13a2b0e1dddbd63135f27cb546
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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
MD5bab5aa2e94a16cf8f7905793bfa6f99a
SHA1dcde4e26c81b28c657670dbece37f609d39a5bde
SHA256c073e077f70f15c2d6ade46edaf8830e108dc94846a4b394df0e030ad9bb406b
SHA51279fff84dc3fabd23f31606773d6af8e394262f146d1a46dc2c69b1a53767129066301a80649c666205a8ee6049f5353938e9b3f3dc57e7ef69a7014d74de7ba2
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD52036710129e088644322c8d06bf39fef
SHA1a68b146de9735141945191ffbda94599f469db10
SHA256454061ca89911b1293dc24f4ea92a89e65bc25a4a5dda80c28df4167af9bb97b
SHA51202ad1558cdf0f3cde1ef885fe5c10a18d6656146b6708ba8327c639d3126d21bd381e1a971e08a3723ab46f68fb803f4a7cd7c27e9bb48acf614d24db8b41715
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD58bdf7930472a0106f55fecdee86f189b
SHA185f8c4a4062dd5310215c6aeb2a3d10b5fcddeae
SHA256aadd39ed75d52b1af8eb558d2f25e67ec288a8afb1f194ee6ae7f0680295b9b7
SHA5126f770ff2a37e4454dae8f035359615c4f2a4b65172d0c55d6cab4519071e3826426358f58adac714aa1711e2e19c18c4eb14178629c0f5d1cdc2677b268714d1
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C:\Users\Admin\AppData\Local\8d8b846c-08ca-4b60-8d6b-d03f85813349\6b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571.exe
Filesize716KB
MD545e29541b72d9b115a74d1fed6354afb
SHA192dcda655abeaa19d042116bdcc5ba58151ee640
SHA2566b6ef23a0bbdbde7bfedbf7aa0b3a66c31dd406282eb96d6c3dd1d6a3a95b571
SHA512299aa6ac2fdc35cc8a1a655af27558cfa13a4e5018a8c8d390b6ca024821fd93ee5ac64fed5f8b9ff28b1649203f552b6868c5131ee5970d1e3cb883e7a5a0cb
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Filesize
68KB
MD529f65ba8e88c063813cc50a4ea544e93
SHA105a7040d5c127e68c25d81cc51271ffb8bef3568
SHA2561ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa