Analysis
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max time kernel
153s -
max time network
160s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
15/04/2024, 20:10
Static task
static1
Behavioral task
behavioral1
Sample
17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe
Resource
win11-20240412-en
General
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Target
17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe
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Size
819KB
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MD5
ee36df0a7d9721de85b8349377f67369
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SHA1
18cd0b6d418a197201aedba334f0eab4e1be3723
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SHA256
17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7
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SHA512
a10b87ce926318bb45a3f2a2fc5eb1ad54e23b1da9d2928442738a1faff61bda891f1fbef69d47bde2b81ba0a39080bba8d2567231e6d5657ca923f725b5c84e
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SSDEEP
12288:FX1Qkz5jNBuLiqfGl2T/TDsuqP/uzO8JUipPII2bmZa:FX6iqfGl2T/PmG68J2b2a
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.uazq
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offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/2612-2-0x0000000004CE0000-0x0000000004DFB000-memory.dmp family_djvu behavioral2/memory/2680-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2680-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2680-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2680-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2680-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2976-37-0x0000000000400000-0x0000000000537000-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
pid Process 4628 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-825860316-2493133627-3905166409-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c69dc784-bafb-49c8-a502-bca4b7a562a9\\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe\" --AutoStart" 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.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.
flow ioc 10 api.2ip.ua 12 api.2ip.ua 3 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2612 set thread context of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 3112 set thread context of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 2976 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 2976 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2612 wrote to memory of 2680 2612 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 82 PID 2680 wrote to memory of 4628 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 83 PID 2680 wrote to memory of 4628 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 83 PID 2680 wrote to memory of 4628 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 83 PID 2680 wrote to memory of 3112 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 84 PID 2680 wrote to memory of 3112 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 84 PID 2680 wrote to memory of 3112 2680 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 84 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87 PID 3112 wrote to memory of 2976 3112 17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe"C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2612 -
C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe"C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2680 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c69dc784-bafb-49c8-a502-bca4b7a562a9" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4628
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C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe"C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3112 -
C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe"C:\Users\Admin\AppData\Local\Temp\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2976
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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
MD53c6a98dff2c8e5d41183fb934602bccf
SHA1389eea4f6c8b9a19dd6efd65b2c979feeb4262a7
SHA2568c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8
SHA512fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd
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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
MD53ccfdd600cd47e68bb29ccc645df19ad
SHA10286fa0a547236d2aea6ca8ec336341211a6d643
SHA256ba0afb49d90eff2769fd2ff7d7aef0ae9c62a32ff7efd9d0c653aec1b795e803
SHA512e4b6c4a82a01fab33eec004439bd67ae98003f7a0b632a83dd90d369ac9097ed3c2b735660baea3cb25ebcbf0ea2f2b764b58f19b6d0f4f2938319a162375287
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5cfbe320c23ee88abfd67493b796e5245
SHA177fbb013324570ba8e2f11b64e58ee6df74735d5
SHA2568cc427bfc69ff233a888ce9851e8f6bd8df5ba1cc25514f6bac081a6417823c1
SHA512d936e6ff0f537930faad890be0897a913545f583160c9886c91da1a0f4e2d94424bc017accc4bcebe9ff0ab124454907deee5e4202e91c855dfe6e67aafd1c35
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C:\Users\Admin\AppData\Local\c69dc784-bafb-49c8-a502-bca4b7a562a9\17e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7.exe
Filesize819KB
MD5ee36df0a7d9721de85b8349377f67369
SHA118cd0b6d418a197201aedba334f0eab4e1be3723
SHA25617e727162cf53ece1cc040d90840dfcc3d7dd2b5979979def35e1194045facd7
SHA512a10b87ce926318bb45a3f2a2fc5eb1ad54e23b1da9d2928442738a1faff61bda891f1fbef69d47bde2b81ba0a39080bba8d2567231e6d5657ca923f725b5c84e