Analysis
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max time kernel
143s -
max time network
124s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
22-05-2024 05:02
Static task
static1
Behavioral task
behavioral1
Sample
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
Resource
win11-20240419-en
General
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Target
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
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Size
710KB
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MD5
34d48ac48d4fa713d24a1f14f1e37896
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SHA1
0aa53f9d59f9d3818d7f90de12196907b00ad560
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SHA256
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed
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SHA512
34206132228d25c18cb2a79df65a0243619634d44cee58972de833aff9877a4bb9bff410be07a62a194efd5acd430f49dfaa79cacfb99c85bd4277a490795e68
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SSDEEP
12288:Ojd4ObjwejVgw0RPXgv5nmhQvXNT1pUpRnQHRdFs1jb8qEPo58Iv2+mdky:OjdfTF0RelT1ypRn+RdFs1jbJEPoV+my
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/3300-1-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3300-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4172-4-0x0000000004B40000-0x0000000004C5B000-memory.dmp family_djvu behavioral2/memory/3300-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3300-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3300-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1528-37-0x0000000000400000-0x0000000000537000-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:
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\160296cc-0a68-41b0-8560-0da6b818db2e\\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe\" --AutoStart" 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.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:
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exedescription pid process target process PID 4172 set thread context of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 set thread context of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.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:
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exepid process 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 1528 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 1528 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exedescription pid process target process PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 4172 wrote to memory of 3300 4172 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 3300 wrote to memory of 2560 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe icacls.exe PID 3300 wrote to memory of 2560 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe icacls.exe PID 3300 wrote to memory of 2560 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe icacls.exe PID 3300 wrote to memory of 1868 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 3300 wrote to memory of 1868 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 3300 wrote to memory of 1868 3300 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe PID 1868 wrote to memory of 1528 1868 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe 58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4172 -
C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3300 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\160296cc-0a68-41b0-8560-0da6b818db2e" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2560 -
C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1868 -
C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe"C:\Users\Admin\AppData\Local\Temp\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1528
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
MD5cb35bd9d6c5a4fd50a9263018bbd9784
SHA1efec24f93d2af7bd01969c36870ebc928fa6c790
SHA256be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612
SHA512ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11
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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
MD54b0bbd07dd1226bfa4ae0a5787f4416a
SHA14ffdc118bb8b28de4661bd202977024de279d826
SHA256cd6e2b1f0de35639be49d8926f7688e914f567a77c1d95bc7a0ba0a77ab68923
SHA5121c442dad66e860bdf3d23e85364139a97215d65a206cbccd1985443821b79f901b6ec890594f9f8f78864bdcdc5308a5cc4ea3e79621686774054e2c89327487
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5019c30f8b68cb1de891153248fc69e97
SHA1a1046c3f0280c67f4a44caaa5da6c1ccaf78318e
SHA256127699ce06652147c283966836f31b2b2173c8a3bd0b97e00e7f8ce4a1861545
SHA512888c0d0a3552e35be8eb38285a2f998c09dce95947a6648746631da9aa2167c75b8fb8b3a0a497429fd356469f034c4f3a6ca93a2787965d07818180db40b7af
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C:\Users\Admin\AppData\Local\160296cc-0a68-41b0-8560-0da6b818db2e\58c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed.exe
Filesize710KB
MD534d48ac48d4fa713d24a1f14f1e37896
SHA10aa53f9d59f9d3818d7f90de12196907b00ad560
SHA25658c2337e3d3d8bdaf94adc978ae8d0856e7393a61e820a0a47da4d81630aa1ed
SHA51234206132228d25c18cb2a79df65a0243619634d44cee58972de833aff9877a4bb9bff410be07a62a194efd5acd430f49dfaa79cacfb99c85bd4277a490795e68