Analysis
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max time kernel
149s -
max time network
155s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
09/04/2024, 08:01
Static task
static1
Behavioral task
behavioral1
Sample
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
Resource
win11-20240221-en
General
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Target
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
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Size
770KB
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MD5
853cc78a670e6ac494a7daf873b84d2b
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SHA1
65034a73ece0f47a512b0169b4bb8d7327eb5ee7
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SHA256
ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6
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SHA512
384379dc5bc40d1690bc1ed94c324e2b24dc17ad1ea08a41bcc66350a6619d1f2a51a1111b8b9c2e8fd7f5e21c291eb1f7b00ce942dc4666ddeff11acb357d83
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SSDEEP
12288:sqyhRwn3MMk9eh+cKpLJn0hQ30RDIyZ4b3XmuL/UysIJmvPb2nnJPZ33aDw4o4:GW3Ao+cKx0BktGuLsysFnb8JPZ3qDpR
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/1636-2-0x0000000004B40000-0x0000000004C5B000-memory.dmp family_djvu behavioral2/memory/4880-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4880-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4880-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4880-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4880-18-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1180-39-0x0000000000400000-0x0000000000537000-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 1924 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-647252928-2816094679-1307623958-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b3a32004-0fca-418c-8025-d7388bb7e214\\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe\" --AutoStart" ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.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 1 api.2ip.ua 2 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1636 set thread context of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 772 set thread context of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 -
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 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 1180 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 1180 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 1636 wrote to memory of 4880 1636 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 79 PID 4880 wrote to memory of 1924 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 81 PID 4880 wrote to memory of 1924 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 81 PID 4880 wrote to memory of 1924 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 81 PID 4880 wrote to memory of 772 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 82 PID 4880 wrote to memory of 772 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 82 PID 4880 wrote to memory of 772 4880 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 82 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85 PID 772 wrote to memory of 1180 772 ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1636 -
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4880 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b3a32004-0fca-418c-8025-d7388bb7e214" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1924
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C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:772 -
C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe"C:\Users\Admin\AppData\Local\Temp\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1180
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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
MD5fc5408c48a55314c72e200b74330cac4
SHA17e8889ec3189a40e6078088927bf3612753fa628
SHA2567ea2a016d97635b1367455af2250cbf9e9c34d293829d11fc21ce905347590c4
SHA512481753ef755c188012919ea728ea0395f22b6ce83f2f9a11675be6072f154db141b2382dc62ad7c3c95e36596529176a66f40e3d118cf0e33ea8e6f716ae1d77
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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
MD599b0f15a79de51abcd3082b95d9e94a5
SHA1a703df786b0dd9ff6e1092219191037fa061ddd3
SHA25618c1efe688d64db3e09df6c248ba890f5f37c3cf42089ad12abe978b3e56757c
SHA512acd2349af80dade6ed74436bb173ddf6e8e6be507bab1ef79795d3e7a082faeb3a91e0153177e067dc60ef006386effcc589dad694b2e7a3cbebd295d59ce3b2
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5a34ff07789d8c10e95ab13e0317749f1
SHA1e7025cbaf8e3853186f1c8363ef4311041bb2844
SHA2563c719f08fdcf9de9664d442ad42e3ea122497f9a77762e1cebe88217cb6ba885
SHA512cc29b9ddc6f385b5675f3168ffec8c9b346db3d2128d725ec2e408b3a4066e690d8a2677727a51fbe7f84356f41c60f315873ef5b8c132598c38979eba8384c6
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C:\Users\Admin\AppData\Local\b3a32004-0fca-418c-8025-d7388bb7e214\ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6.exe
Filesize770KB
MD5853cc78a670e6ac494a7daf873b84d2b
SHA165034a73ece0f47a512b0169b4bb8d7327eb5ee7
SHA256ed47d943001dc4d214f723f83e7443f91dfbe0e72a17f9bc1f536465c9036cb6
SHA512384379dc5bc40d1690bc1ed94c324e2b24dc17ad1ea08a41bcc66350a6619d1f2a51a1111b8b9c2e8fd7f5e21c291eb1f7b00ce942dc4666ddeff11acb357d83