Analysis
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max time kernel
143s -
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
09/04/2024, 05:01
Static task
static1
Behavioral task
behavioral1
Sample
b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe
Resource
win11-20240221-en
General
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Target
b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe
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Size
771KB
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MD5
2a980de49d376b3ce74a9e0d2b62e162
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SHA1
b135b43dfcd38f3d92c8ef89d0c672cb3f297cab
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SHA256
b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027
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SHA512
1f4b5f99cba10082b9f7a7f83e716cebcc711e45fafd932ef255bcd2aef10ff37d8063cffffb5b1af7fa3d6ffef6435a2f66bb715c280579e90d04c44f4d81a5
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SSDEEP
12288:IPiZoikvkDSY0wImPo85s6Gt81RCwiZMNHjpfVsRcdFzVkxjgehS6:gLYzQ85xGORLiGpfucdFzWBhS6
Malware Config
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.uajs
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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/4672-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp family_djvu behavioral1/memory/3636-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3636-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3636-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3636-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3636-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1520-37-0x0000000000400000-0x0000000000537000-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 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 4864 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\\51402f06-36d5-4d80-9671-702a5350ffaa\\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe\" --AutoStart" b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.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 21 api.2ip.ua 8 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4672 set thread context of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 3832 set thread context of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 -
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 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 1520 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 1520 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 4672 wrote to memory of 3636 4672 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 85 PID 3636 wrote to memory of 4864 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 89 PID 3636 wrote to memory of 4864 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 89 PID 3636 wrote to memory of 4864 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 89 PID 3636 wrote to memory of 3832 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 90 PID 3636 wrote to memory of 3832 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 90 PID 3636 wrote to memory of 3832 3636 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 90 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92 PID 3832 wrote to memory of 1520 3832 b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe"C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4672 -
C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe"C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3636 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\51402f06-36d5-4d80-9671-702a5350ffaa" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4864
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C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe"C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3832 -
C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe"C:\Users\Admin\AppData\Local\Temp\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1520
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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
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
MD5bbb080f9ce644f4b03214e9bf6cc2ac8
SHA11f8fd9f2d647d8fa9e1e8e76e28851d35dc66fe7
SHA256a27c6ff53b736e4ac3dec797e94e344530e2b8e7039ab793fea1fb449ccfaffb
SHA512af5f915e5dda969b959d7b8d6c2f6d4c0fd675777e78719014854531515054a0415f43ee1ebca47ae8551a5c94cc4807f2672fb11d5067ebeb29fd566d4a6dc8
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5f1496e2986ccf20cedfb6aa7817ca304
SHA1b3d0a7cfdd0799349a251bb82d2c8079eb150bcb
SHA2565c7e05ed4160c9d9d534938d7cbd8fe8f0a44876d28f8e1c584f47669a38beec
SHA512a3fe2a5e2fe0a5a56f7206943e585a3fc18d6b459738851961108f1e632f8d813fda672a95129b3cbabd50f41e651182c0bd574df2ee025c4b7f313138d5f4f9
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C:\Users\Admin\AppData\Local\51402f06-36d5-4d80-9671-702a5350ffaa\b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027.exe
Filesize771KB
MD52a980de49d376b3ce74a9e0d2b62e162
SHA1b135b43dfcd38f3d92c8ef89d0c672cb3f297cab
SHA256b651d3749acd5100b39b60be19f2f94c79f7a6369fbdbfb129924e9fd8967027
SHA5121f4b5f99cba10082b9f7a7f83e716cebcc711e45fafd932ef255bcd2aef10ff37d8063cffffb5b1af7fa3d6ffef6435a2f66bb715c280579e90d04c44f4d81a5