Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
21-05-2024 16:52
Static task
static1
Behavioral task
behavioral1
Sample
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Resource
win11-20240426-en
General
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Target
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
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Size
738KB
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MD5
05567327c48b4b2af47574295ee9748b
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SHA1
7595f946efc74526f2b989413e73e3f37c4b4765
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SHA256
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925
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SHA512
293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea
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SSDEEP
12288:xIArWcHGmhaQSRJSYXYDNV+VA6Sy7ng50CgH969W6Cw:xo1JSrDNV7y7n1ldK
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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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 behavioral1/memory/1176-2-0x00000000040D0000-0x00000000041EB000-memory.dmp family_djvu behavioral1/memory/224-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/224-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/224-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/224-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/224-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2360-37-0x0000000000400000-0x0000000000537000-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.
Processes:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e96480df-5860-4ab2-8a3f-af6f2b0ddd70\\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe\" --AutoStart" 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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 3 api.2ip.ua 4 api.2ip.ua 11 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exedescription pid process target process PID 1176 set thread context of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 set thread context of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exepid process 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 2360 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 2360 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exedescription pid process target process PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1176 wrote to memory of 224 1176 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 224 wrote to memory of 4696 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe icacls.exe PID 224 wrote to memory of 4696 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe icacls.exe PID 224 wrote to memory of 4696 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe icacls.exe PID 224 wrote to memory of 1184 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 224 wrote to memory of 1184 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 224 wrote to memory of 1184 224 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe PID 1184 wrote to memory of 2360 1184 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe 41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1176 -
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:224 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\e96480df-5860-4ab2-8a3f-af6f2b0ddd70" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:4696 -
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1184 -
C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2360
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
MD5df80f9ba75076db634761b6132e0d4e3
SHA107983946fb660752c7cccb2ef82d01ec4c9ecc5d
SHA256d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99
SHA5124ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a
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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
MD507b3c102f8e0108d99b166ad34fb2d63
SHA10d90f1bee5423489e185ebcfd1ec45a2c409d10e
SHA25631ccccbb030e1968525d8bc9b8958901ecef24d1cb9500d82fc209eee5e035a7
SHA512709bb8b25e9231bdda3d91373399f589a10a453a5af3c0e7ed7c60e870ec68dd54c42c1442293a27b3d38f47548604699821f1b4e7c99eee4053b86ded91d4a4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD553e133804099ee4563995b5863867eba
SHA1f3335e1160d1ba6078b2db0437f79c046dfc112f
SHA256d7be0b4f8d9fd2173668bc601f2a248f80a1c4ed61d5958b88a60ae558177173
SHA5124a5b98fcbef7a7603d3600874b5132255222786121eee84391cb6bb084e81653485399e7d9cba80d8ce785843208d78a86748e9f45a707e98f2533b27de45018
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C:\Users\Admin\AppData\Local\e96480df-5860-4ab2-8a3f-af6f2b0ddd70\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
Filesize738KB
MD505567327c48b4b2af47574295ee9748b
SHA17595f946efc74526f2b989413e73e3f37c4b4765
SHA25641414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925
SHA512293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea