Analysis
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max time kernel
147s -
max time network
100s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
27-04-2024 05:18
Static task
static1
Behavioral task
behavioral1
Sample
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe
Resource
win11-20240419-en
General
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Target
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe
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Size
749KB
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MD5
f4b569f64ce6ed725fe2adb755792feb
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SHA1
5921e7c2ea3d3f81f8ed2a96c4d9623b86fca5fa
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SHA256
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee
-
SHA512
8d1f385765984535ec5fd32814ecad648ed38e49e495f047ec29f42907b85d06544b6e4d76828199eb6f7e5d78035140a4069936b01a6a9c5fbaa769c085dd25
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SSDEEP
12288:yKVTQpN3MmxdHknVOH4A1wCFLPqjA8v4yTJ8mQiCZtDL/zle2ZsfqEkQ:yKVW9MmxdEnkYA1fLSj9HBGu2
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
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extension
.bgzq
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offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
-
ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/804-2-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4720-4-0x0000000004AD0000-0x0000000004BEB000-memory.dmp family_djvu behavioral2/memory/804-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/804-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/804-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/804-12-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-16-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-18-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5044-31-0x0000000000400000-0x0000000000537000-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:
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a2794830-f342-43fe-9bb6-3ea41dc10565\\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe\" --AutoStart" 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 1 api.2ip.ua 5 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exedescription pid process target process PID 4720 set thread context of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 set thread context of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.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:
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exepid process 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 5044 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 5044 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exedescription pid process target process PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4720 wrote to memory of 804 4720 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 804 wrote to memory of 4892 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe icacls.exe PID 804 wrote to memory of 4892 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe icacls.exe PID 804 wrote to memory of 4892 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe icacls.exe PID 804 wrote to memory of 4272 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 804 wrote to memory of 4272 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 804 wrote to memory of 4272 804 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe PID 4272 wrote to memory of 5044 4272 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe 978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe"C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe"C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.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\a2794830-f342-43fe-9bb6-3ea41dc10565" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe"C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exe"C:\Users\Admin\AppData\Local\Temp\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.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\Local\a2794830-f342-43fe-9bb6-3ea41dc10565\978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee.exeFilesize
749KB
MD5f4b569f64ce6ed725fe2adb755792feb
SHA15921e7c2ea3d3f81f8ed2a96c4d9623b86fca5fa
SHA256978bd8eed6c9064143730bc4f23b695c5523a337991adff2a02a08d9e20a75ee
SHA5128d1f385765984535ec5fd32814ecad648ed38e49e495f047ec29f42907b85d06544b6e4d76828199eb6f7e5d78035140a4069936b01a6a9c5fbaa769c085dd25
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memory/804-2-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/804-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/804-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/804-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/804-12-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4720-1-0x00000000031A0000-0x000000000323F000-memory.dmpFilesize
636KB
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memory/4720-4-0x0000000004AD0000-0x0000000004BEB000-memory.dmpFilesize
1.1MB
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memory/5044-15-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-16-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-17-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-18-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-25-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/5044-31-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB