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Analysis
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max time kernel
291s -
max time network
264s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
01/05/2024, 22:47
Static task
static1
Behavioral task
behavioral1
Sample
2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
Resource
win10-20240404-en
General
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Target
2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
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Size
802KB
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MD5
0779bb0f196e0f569113456aac677a3d
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SHA1
fe8c4330c4a00c6931c68a41fee99bede478a902
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SHA256
2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a
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SHA512
73cee4415e796d71ca6b3b91f95a917fb8c926453279210c0500c17d8b2292e4183588b4dbd6293ff9945cee0dc0ef921e7316c2500106254eb4e34ada8c86fe
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SSDEEP
12288:99WFA2R+3gfJn0qEH5S6xuyu1TUDJmHiYyMVEUcejAFTFHDkT6jj7PjEbhV:ChaLxuNtXioVSJHDkTQjbjEbh
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 14 IoCs
resource yara_rule behavioral2/memory/4196-2-0x0000000003650000-0x000000000376B000-memory.dmp family_djvu behavioral2/memory/4968-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4968-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4968-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4968-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4968-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4780-36-0x0000000000400000-0x0000000000537000-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 4428 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0fd29864-55a6-439c-a6cf-6433cefa50cc\\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe\" --AutoStart" 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.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 1 api.2ip.ua 2 api.2ip.ua 10 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4196 set thread context of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4336 set thread context of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 -
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 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 4780 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 4780 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4196 wrote to memory of 4968 4196 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 72 PID 4968 wrote to memory of 4428 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 73 PID 4968 wrote to memory of 4428 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 73 PID 4968 wrote to memory of 4428 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 73 PID 4968 wrote to memory of 4336 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 74 PID 4968 wrote to memory of 4336 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 74 PID 4968 wrote to memory of 4336 4968 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 74 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76 PID 4336 wrote to memory of 4780 4336 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe 76
Processes
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C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4196 -
C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4968 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0fd29864-55a6-439c-a6cf-6433cefa50cc" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4428
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C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4336 -
C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4780
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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
MD556282e3f56542f67e60909a4345c5a35
SHA11a627ec9980ee9e3f5846da3b63552122032f78b
SHA256719698173bbfbb3375c5e0c43342f785c76727fcd6560364e0d9bec77232a6f5
SHA512291a1569239659ae5c1466d324f6c0114653f2b1578e59f1f340decf189aa38ccf9599c2005551e09ce94f2bceb94f64773181fc011dc1167edd4aa9b1b4d11e
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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
MD531e46469000b13498d38559df53d73ec
SHA18e1a0270df046ad93e5103a008c944633bb01c16
SHA2560b29551384baf79c75a89dad168c622505abe1c11caca9d0dba6dc0b4fbd1686
SHA512cd00500d6f4e9963315367325dac3e1a94d695c383d629d2fa7a650c27c755b9d8a2b5b2c068a73a14240f60761659fc84c6f5de475061672c52f2056c0a68da
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5aab65b8e274c114b5e5638cf538d4b7b
SHA1be54be0d075636b2f30958ed63c0d73df306ff4c
SHA2561842903b62f19e5026639ba67fa9b9232dd3803cedd93ae8f2fd8b746b6f8a48
SHA512f014f64f3d38b07504c3f6ccdf950c9770b958cecaef30d8ccba62af1331ccd210efc74477712824b06a0f9ac2cf9726507697af62450ce8cb6c56bcc6013fc6
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C:\Users\Admin\AppData\Local\0fd29864-55a6-439c-a6cf-6433cefa50cc\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
Filesize802KB
MD50779bb0f196e0f569113456aac677a3d
SHA1fe8c4330c4a00c6931c68a41fee99bede478a902
SHA2562f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a
SHA51273cee4415e796d71ca6b3b91f95a917fb8c926453279210c0500c17d8b2292e4183588b4dbd6293ff9945cee0dc0ef921e7316c2500106254eb4e34ada8c86fe