Analysis
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max time kernel
143s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
22-05-2024 15:44
Static task
static1
Behavioral task
behavioral1
Sample
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
Resource
win11-20240508-en
General
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Target
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
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Size
710KB
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MD5
2fa6ec658c61947f197c939f130bac1d
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SHA1
363abe0b0187e0463b32178057ddbc14e3853846
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SHA256
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673
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SHA512
8708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce
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SSDEEP
12288:pVO8OUTlNJ8ZOBmwmk6u3t4CYDRZ4uhPatmHw0NMD5LZOY6RsQV:pVOJqxmk6u3t4CYD74htSNM1Ll6
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
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extension
.vehu
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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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 15 IoCs
Processes:
resource yara_rule behavioral2/memory/4952-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp family_djvu behavioral2/memory/2628-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2628-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2628-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2628-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2628-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3488-37-0x0000000000400000-0x0000000000537000-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
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb\\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe\" --AutoStart" 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.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.
Processes:
flow ioc 1 api.2ip.ua 2 api.2ip.ua 6 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exedescription pid process target process PID 4952 set thread context of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 set thread context of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exepid process 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 3488 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 3488 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exedescription pid process target process PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 4952 wrote to memory of 2628 4952 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 2628 wrote to memory of 3344 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe icacls.exe PID 2628 wrote to memory of 3344 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe icacls.exe PID 2628 wrote to memory of 3344 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe icacls.exe PID 2628 wrote to memory of 5012 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 2628 wrote to memory of 5012 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 2628 wrote to memory of 5012 2628 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe PID 5012 wrote to memory of 3488 5012 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe 71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4952 -
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2628 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3344 -
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5012 -
C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe"C:\Users\Admin\AppData\Local\Temp\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3488
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
MD56728aea2631b86a76c237508d8ba9b55
SHA17a670f95cac088313f7558869162fe01c6dc0ec9
SHA256e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b
SHA512533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5
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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
MD538ad9fd0e6f8edf48096e24d22a2e90c
SHA15be9922d4dce3610e903cfade1c087dea3efdd7c
SHA2568031f86553aecae0f09e2b967ca136804007d189312c213885531fee39bd42b9
SHA512fdc6e4ad59980f9f2a3e53496fb609e6e775ad1bccdfded143875a8d32b67cb61592b0ca992b977694a270f27ea28fe3304158c4c73e86f304529090decd9a88
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD51bec94cfdbf29c4991d294f7ed4e5d6b
SHA1826bddd9ee354819e51117c70407800c5316e3a8
SHA25638891cf9e72630cd472181eecbbce1ea85e8fd8330726c7f832aff8f596ab503
SHA512428e8d6e0a0d891dc6dba552a9b57eb1c6a18dbc3ddeec757eb6ad6dd0ca0387aa50e41c40a3caf1a934db0420f16f24c415da7af0ff0ff3ff6c2912b9773721
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C:\Users\Admin\AppData\Local\178bad1f-e7a5-47bb-b2c9-c8310e2f0ffb\71babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673.exe
Filesize710KB
MD52fa6ec658c61947f197c939f130bac1d
SHA1363abe0b0187e0463b32178057ddbc14e3853846
SHA25671babb4e984c118392eccc24b1ce4909e41ee2b49c17ad105c64f42847db5673
SHA5128708184d91622fe81664a98a5ce117e0107cb73c8f62b40fb3e60985cef1c84dda42359f55dc02beec551d62dcbabb6c3c2f28e079d92d70a35f5f97c0da71ce