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Analysis
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max time kernel
144s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
06/04/2024, 21:39
Static task
static1
Behavioral task
behavioral1
Sample
ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
Resource
win11-20240221-en
General
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Target
ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
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Size
745KB
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MD5
03813c0d02b548f6d16a09dc6220e157
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SHA1
03666fedc343f1ea458f1d8c7e0ffad796e90788
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SHA256
ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe
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SHA512
c856f9dd525c98a5200f3ef7201dd1566306a7c33b7ca9988e91f2d12694bc3fac761f24096b9a0044ba9c9044d4b8f7feef967b9395cfee71b1e0d9fd50aa70
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SSDEEP
12288:6dgX02mhTllwTf0YCzdBXdoGSMEihOpT5dXRwSJmu9A5KJ8h23+BvY3mNgVhLlM4:6dG+Tllyf0YCV4i2dBwUjx6AmNgVhaBi
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 behavioral1/memory/3476-2-0x0000000004AA0000-0x0000000004BBB000-memory.dmp family_djvu behavioral1/memory/1808-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1808-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1808-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1808-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1808-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4200-37-0x0000000000400000-0x0000000000537000-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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3188 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c9504fc3-db50-43b5-b674-ee846e12f166\\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe\" --AutoStart" ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.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 8 api.2ip.ua 9 api.2ip.ua 21 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3476 set thread context of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 4044 set thread context of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 -
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 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 4200 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 4200 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 3476 wrote to memory of 1808 3476 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 89 PID 1808 wrote to memory of 3188 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 90 PID 1808 wrote to memory of 3188 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 90 PID 1808 wrote to memory of 3188 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 90 PID 1808 wrote to memory of 4044 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 91 PID 1808 wrote to memory of 4044 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 91 PID 1808 wrote to memory of 4044 1808 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 91 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93 PID 4044 wrote to memory of 4200 4044 ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3476 -
C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1808 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c9504fc3-db50-43b5-b674-ee846e12f166" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3188
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C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4044 -
C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe"C:\Users\Admin\AppData\Local\Temp\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4200
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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
MD538fe440dcb41bf01baa39153169a3d74
SHA174a11892ffb1e9baf34fca27ce617993a3221080
SHA25680c40063d4b3729809906924dd55487a4f20c5bc8aeefa8cfc313dc532f7e423
SHA512eaf66971a2b57aa93c9fb3c2d25759174dfb0a90d61f2589aeee59d3c540b5cbd9fb669891616e57b41d66b41b6586c3724d3b02f91a86bb7bd905bf2faac31c
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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
MD5a8189958d0f1442f5bfe7b93c897c43a
SHA1f314077388d56b240c7f1cdfe49ae7250a1b9d7f
SHA256e193f67eaf98376663d9f778f346f15f46616a755d58bd680eb1bc1d249623bf
SHA512d5b7aa752dbe9d1db281daaacca770ddf2ccc3d1ae7ed3f7b38a069b43318d9e11bcbef7045726165059c5d3b05ba6f48286ced37e89ac6034266b984e64a17f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD57e996f99d26fe85f6047e641a6e95b2f
SHA136e025bc9d8ec304da465cad7973fdaca3778d1f
SHA256777dcc0c3739cd8ee1297eb3d10a3e54b6850ee59a014866b4234892eef844ef
SHA5123fac9b5da1e975f0c5cb64c8c62df05cb4d4051813674810b9a7248884e368e675ef96f983b6483dee00e3f20747582b3e7dae60059d685f4510c0f88b8f5d57
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C:\Users\Admin\AppData\Local\c9504fc3-db50-43b5-b674-ee846e12f166\ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe.exe
Filesize745KB
MD503813c0d02b548f6d16a09dc6220e157
SHA103666fedc343f1ea458f1d8c7e0ffad796e90788
SHA256ecd4ed3aeeb6604487a212f72c127f36cdb8825e63aebef8dd9e927f165e2cbe
SHA512c856f9dd525c98a5200f3ef7201dd1566306a7c33b7ca9988e91f2d12694bc3fac761f24096b9a0044ba9c9044d4b8f7feef967b9395cfee71b1e0d9fd50aa70