Analysis
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max time kernel
145s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-04-2024 09:42
Static task
static1
Behavioral task
behavioral1
Sample
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
Resource
win11-20240412-en
General
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Target
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
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Size
771KB
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MD5
9560fb4eb84759382dd5edfec54bec27
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SHA1
7688c98cab62daf9ec00c3316d71bbc7368f5a3c
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SHA256
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f
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SHA512
9bb57a49100acf419e704d1ea3e43cd78148bff8df14e16e36a07339a0b257f2fbecab3f681d8476b9aa1fd5cf0701c9d331c8f73273efd0ede1ed3b1b93f398
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SSDEEP
12288:6gcm7qu9vVYCvOdnLUhkMVjp4G6rz4Vx34TV+1KGiddX3wMpHkmTqpPQEiAVoNCn:Imr9uCwUrJpwr2icKGgHvJWpPJN
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.bgjs
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offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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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 17 IoCs
Processes:
resource yara_rule behavioral2/memory/5336-2-0x0000000004AE0000-0x0000000004BFB000-memory.dmp family_djvu behavioral2/memory/2796-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2796-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2796-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2796-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2796-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1996-37-0x0000000000400000-0x0000000000537000-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:
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-801878912-692986033-442676226-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d9ce14d3-3f9b-4386-9e64-0eafc2527199\\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe\" --AutoStart" 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.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 15 api.2ip.ua 17 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exedescription pid process target process PID 5336 set thread context of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 set thread context of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.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:
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exepid process 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 1996 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 1996 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exedescription pid process target process PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 5336 wrote to memory of 2796 5336 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 2796 wrote to memory of 3776 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe icacls.exe PID 2796 wrote to memory of 3776 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe icacls.exe PID 2796 wrote to memory of 3776 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe icacls.exe PID 2796 wrote to memory of 3796 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 2796 wrote to memory of 3796 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 2796 wrote to memory of 3796 2796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe PID 3796 wrote to memory of 1996 3796 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5336 -
C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\d9ce14d3-3f9b-4386-9e64-0eafc2527199" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3776 -
C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3796 -
C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1996
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_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
1KB
MD5cb9e9c73d3688b51ee1899e25cd1cc7e
SHA1b2d472d87ac099a708b7536b5c30e5e6f0d28b7e
SHA256382e6d80f80afb665a9c3065602a8fb4a6c3ff73c06a0a6937ffc178466d97a2
SHA51274f1d7c3c68c0ae4ebc7b1c270c2138f578b78b591d8c6af4b7bb56fd4f23e5cebdf9748e7045521c72c000e5a4f35adce8e62951470e65c531f95b26b52a54e
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
410B
MD5b582a2252bbb95d18b33ea7643c3e085
SHA102c85d3c460bda50f9344b6e653ac599ee23a69b
SHA25671a7de8712769550353c4c1f45465046799c831329fb7de06a8c884b9f551e3f
SHA5127178fa36038fb35e0fbce22fc723cdb30f915741a3c8d9264d9718369206a568661d845defc69afd8b88989c379f8075847828b28af029e22ce3d925729350fc
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD557fb515c2c53df4e4f9c0d1c8d8801dd
SHA1c6a1d77336b6e00f5bd84a8f8a81beb25907a871
SHA25652b11fc1fa69a31101bec47c9d2a7795bf8e432742f0da2218290f1f87252dcb
SHA512f4f28e3b55f9a07a96a5cfd32bb85b9411c23dd5fc80b45971b5f1b90302c5de6edfcf79c8fd2d976e77680bedf9fe4a138d9aba120663273f2671cfafa34437
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C:\Users\Admin\AppData\Local\d9ce14d3-3f9b-4386-9e64-0eafc2527199\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exeFilesize
771KB
MD59560fb4eb84759382dd5edfec54bec27
SHA17688c98cab62daf9ec00c3316d71bbc7368f5a3c
SHA256453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f
SHA5129bb57a49100acf419e704d1ea3e43cd78148bff8df14e16e36a07339a0b257f2fbecab3f681d8476b9aa1fd5cf0701c9d331c8f73273efd0ede1ed3b1b93f398
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memory/1996-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-35-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-21-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-20-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-32-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1996-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2796-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2796-15-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2796-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2796-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2796-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3796-18-0x0000000003180000-0x000000000321B000-memory.dmpFilesize
620KB
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memory/5336-2-0x0000000004AE0000-0x0000000004BFB000-memory.dmpFilesize
1.1MB
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memory/5336-1-0x0000000003230000-0x00000000032D1000-memory.dmpFilesize
644KB