Analysis
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max time kernel
150s -
max time network
156s -
platform
windows11-21h2_x64 -
resource
win11-20240319-en -
resource tags
arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system -
submitted
09/04/2024, 02:44
Static task
static1
Behavioral task
behavioral1
Sample
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
Resource
win11-20240319-en
General
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Target
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
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Size
771KB
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MD5
a911c76f3695c14585bc205d9201804d
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SHA1
c8422674f6541052f5b40bc0b0b106b57839581c
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SHA256
03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800
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SHA512
decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79
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SSDEEP
12288:xJHZKiK+XbETiv41h3z3oouI5RJMcX6MUy7W3KxCaaUQEyVWeX4FnVq83K/qH46h:fKiqJzYGbhwuW3KrayziaVi
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 18 IoCs
resource yara_rule behavioral2/memory/2444-2-0x0000000004C80000-0x0000000004D9B000-memory.dmp family_djvu behavioral2/memory/3028-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3028-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3028-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3028-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3028-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2448-20-0x0000000004AA0000-0x0000000004B42000-memory.dmp family_djvu behavioral2/memory/1292-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1292-39-0x0000000000400000-0x0000000000537000-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 3200 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1233663403-1277323514-675434005-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e3589f93-9121-40ca-916f-6983846b1db0\\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe\" --AutoStart" 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.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 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2444 set thread context of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2448 set thread context of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 -
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 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 1292 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 1292 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 2444 wrote to memory of 3028 2444 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 81 PID 3028 wrote to memory of 3200 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 82 PID 3028 wrote to memory of 3200 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 82 PID 3028 wrote to memory of 3200 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 82 PID 3028 wrote to memory of 2448 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 83 PID 3028 wrote to memory of 2448 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 83 PID 3028 wrote to memory of 2448 3028 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 83 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86 PID 2448 wrote to memory of 1292 2448 03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2444 -
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3028 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\e3589f93-9121-40ca-916f-6983846b1db0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3200
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C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2448 -
C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe"C:\Users\Admin\AppData\Local\Temp\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1292
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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
MD5580071ebd24cccfd9268e1474bb8134e
SHA1443665efe7009fe1d4c5bc4786dc9cc540e59ef6
SHA25653e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461
SHA51213d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4
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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
MD516741397ba1bbf4d2d36f19fca44c52a
SHA13180dc5ff9580328a77f166accb8f924878697e9
SHA256047779fc9aea8da867b00281c50a965bd0af4f3ce67791592fd614614c07236d
SHA512484812cb4bc6bbfe4e29e8626069b66eac86ff9e7e61d486b6bf2a419b61baaf81c33dc1213472bae9e3d41dd9950b115be3bafd245a52372b6cba2094faef02
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5c973b3d0dee0b10e1707e171bff58568
SHA11f8875694dc8f9805bcd1371ca6bd52692695f14
SHA2560bb0f84de6a4d4a0cb03d6a37990b3a76b577260dbe6d93206936a4df188cc3e
SHA5124965a0fb6632f0b5417e101affa67a8cc72e9af1c74962dbfe459d99f6394324b28681900f5bd4f98aaa1ae35ac517fc99d30ee6375c521a435b930e0397ad19
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C:\Users\Admin\AppData\Local\e3589f93-9121-40ca-916f-6983846b1db0\03e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800.exe
Filesize771KB
MD5a911c76f3695c14585bc205d9201804d
SHA1c8422674f6541052f5b40bc0b0b106b57839581c
SHA25603e315f2fa7bfcfbb9093a302857e6446b1d64580e667039a91107104c2ac800
SHA512decf1357c7207e89912b33f6d0071d2112fe01d7612f8002035f0cdeb6e0a19dd3e72d5f63937ab3d54ebe46a5c4f5e2516b0a052d38c079724beb777cdaea79