Analysis
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max time kernel
147s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
16/04/2024, 00:01
Static task
static1
Behavioral task
behavioral1
Sample
2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
Resource
win11-20240412-en
General
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Target
2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
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Size
811KB
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MD5
ebdd98ee7607a3d6300406ddcdb955b1
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SHA1
659a2dd87be33c334fc153c9a7d6867f4beea607
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SHA256
2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138
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SHA512
d8f240d51c6ca1ddee7c1602cd397c39ddd4aab8d050bc454fdbbcb65b7663ab0f53708b981eb2daa8b85cfe5892242b8f575784409fb8795838647d6673e350
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SSDEEP
12288:pbrgWXLSO3or/ljxXbIdRvr6ku0Hyi50njpAmvyiHZTnx0RYcD:pbxLrKJxELvrE0Hy00xvySf0RYY
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/2292-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp family_djvu behavioral1/memory/60-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/60-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/60-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/60-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/60-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4060-37-0x0000000000400000-0x0000000000537000-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-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3216 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\dafa3828-ae75-4115-83ce-b4cd1a24279c\\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe\" --AutoStart" 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.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 19 api.2ip.ua 20 api.2ip.ua 33 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2292 set thread context of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 5060 set thread context of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.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 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 4060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 4060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 2292 wrote to memory of 60 2292 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 88 PID 60 wrote to memory of 3216 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 89 PID 60 wrote to memory of 3216 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 89 PID 60 wrote to memory of 3216 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 89 PID 60 wrote to memory of 5060 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 91 PID 60 wrote to memory of 5060 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 91 PID 60 wrote to memory of 5060 60 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 91 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93 PID 5060 wrote to memory of 4060 5060 2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2292 -
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:60 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\dafa3828-ae75-4115-83ce-b4cd1a24279c" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3216
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C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5060 -
C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe"C:\Users\Admin\AppData\Local\Temp\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4060
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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
MD53c6a98dff2c8e5d41183fb934602bccf
SHA1389eea4f6c8b9a19dd6efd65b2c979feeb4262a7
SHA2568c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8
SHA512fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd
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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
MD5abd1057f75d426321573780e1e3e21cc
SHA1528ae9bf35e5a85d7bfef9ed0d16d5f6b5ae8530
SHA25686c102bc1032a57f161f0c27e196d6eec00622129e7919d9b9a793d4fe7a07d4
SHA512adbfc0f380a03792bd09441b06bae4d0fb3c3030b3b3880f91fddce4dfdc774d220de770dffd7baabd3c8fea90659a810e9a9f3f73ff7069253ffef328fa3256
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD57a33b03ec4f6168285117dddd7b4f2b3
SHA12c4b71fc2713dba0efc0269cb45078c6b6eed50f
SHA256fdc51462614302a924a8b5567df082c05d3750a90ec8f00933b3ab298a506625
SHA512041ed3cb105c37f768be7b3ec089c5c63883eb2b29d9878b0c7c60d8f85cbf3b4184c06a579a91a8f6bf78b02716296c6957436a82e7b563e95d377656b9a52b
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C:\Users\Admin\AppData\Local\dafa3828-ae75-4115-83ce-b4cd1a24279c\2f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138.exe
Filesize811KB
MD5ebdd98ee7607a3d6300406ddcdb955b1
SHA1659a2dd87be33c334fc153c9a7d6867f4beea607
SHA2562f75621a9d1b0e38358b5a1e21bf0ddddadb8a6a1d714d761efa77024241a138
SHA512d8f240d51c6ca1ddee7c1602cd397c39ddd4aab8d050bc454fdbbcb65b7663ab0f53708b981eb2daa8b85cfe5892242b8f575784409fb8795838647d6673e350