Analysis
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max time kernel
143s -
max time network
127s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-05-2024 20:20
Static task
static1
Behavioral task
behavioral1
Sample
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe
Resource
win11-20240508-en
General
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Target
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe
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Size
715KB
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MD5
c66f6526cf8048ed4321ef0b592c4f37
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SHA1
6a5d983c1b271eac5e83c39a35e9e2ee52e2d70e
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SHA256
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566
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SHA512
efed699b17aba71139948773490a56a8ed2e44544450e43c76d79b6d497198ccce1c88106fff8fa19dfa117dad791ea203a691915aef643230f7b0aae1a5d2d2
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SSDEEP
12288:Fftt4wBz9WMNEz2ZupC0UYVvOULtvr6zblQgI55oFCNvEEDUA+nJugk:FfTGz2mfTlr61LSUEEDJug
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 behavioral2/memory/5116-2-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4800-4-0x0000000004B40000-0x0000000004C5B000-memory.dmp family_djvu behavioral2/memory/5116-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5116-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5116-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5116-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/112-37-0x0000000000400000-0x0000000000537000-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:
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.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\\b8a7474f-13b8-4fc7-b700-da0fd98e82f4\\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe\" --AutoStart" 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.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 2 api.2ip.ua 8 api.2ip.ua 1 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exedescription pid process target process PID 4800 set thread context of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 set thread context of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.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:
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exepid process 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 112 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 112 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exedescription pid process target process PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4800 wrote to memory of 5116 4800 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 5116 wrote to memory of 3128 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe icacls.exe PID 5116 wrote to memory of 3128 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe icacls.exe PID 5116 wrote to memory of 3128 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe icacls.exe PID 5116 wrote to memory of 4488 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 5116 wrote to memory of 4488 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 5116 wrote to memory of 4488 5116 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe PID 4488 wrote to memory of 112 4488 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe 2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe"C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe"C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b8a7474f-13b8-4fc7-b700-da0fd98e82f4" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe"C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe"C:\Users\Admin\AppData\Local\Temp\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
1KB
MD53bfb237d95f9c34465d50360f39b3ceb
SHA12cdee845ea6ebbd3cd0466b0eae4752842de86cc
SHA2562ceaddb29268e6112e7aa95722894fb061238ad4e2b247ce23595609daa5eb8d
SHA512da55bf0fd898acda5dfd2366a96d439807e502c763dca35c3a119c3ab45f6e3d821a1e3fd29858e333606ef0e822f3373b9cb8c41d95736131bb001ad5b6a16f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
410B
MD5cfd542172d240694d255c9a5e1c95c21
SHA1bea1df0fa4771d39805ed3eafd3577ea546cee65
SHA256392ec60953648d16e321a3d6501a5ece323c55a8d94eebb99d5dbdbedd8c45c2
SHA512155740f6315195b6563c139f3ef32b64a6e13b56226efb7265d2eba815e1cb0534c0eb3bf81cafdc5395c75f38ef5048e9d81e40260eda688736856e889a5a3b
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD5459b78e3a6277551c4cfe06d6f970979
SHA1e6d510c7e97d4a745633c3739e6199945bb3710c
SHA256d1fda74b4fe2eaddbe40b5d7f6d4b70bddad3acad3d68cd6ea8af06a87a55705
SHA5124fe07d4ac5b6eae01c094c5afa16364b423deacf30c5ffaf4574ff0264fdb38e69eda62f1848c8038a1ea69fd5054136814d18d2ee369caef4df67045239b2eb
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C:\Users\Admin\AppData\Local\b8a7474f-13b8-4fc7-b700-da0fd98e82f4\2e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566.exeFilesize
715KB
MD5c66f6526cf8048ed4321ef0b592c4f37
SHA16a5d983c1b271eac5e83c39a35e9e2ee52e2d70e
SHA2562e94fa848a8f61a10effb95a0ab9072b99da3f0596d37136a963b235d1a83566
SHA512efed699b17aba71139948773490a56a8ed2e44544450e43c76d79b6d497198ccce1c88106fff8fa19dfa117dad791ea203a691915aef643230f7b0aae1a5d2d2
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memory/112-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/112-32-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/112-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/112-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
-
memory/112-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/112-35-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/112-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/112-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/112-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4800-4-0x0000000004B40000-0x0000000004C5B000-memory.dmpFilesize
1.1MB
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memory/4800-1-0x0000000004AA0000-0x0000000004B34000-memory.dmpFilesize
592KB
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memory/5116-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5116-2-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5116-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5116-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5116-19-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB