Analysis
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max time kernel
144s -
max time network
94s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
27-04-2024 22:33
Static task
static1
Behavioral task
behavioral1
Sample
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe
Resource
win10v2004-20240419-en
Behavioral task
behavioral2
Sample
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe
Resource
win11-20240426-en
General
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Target
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe
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Size
808KB
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MD5
6ba3c656ce436b2523104b0bbb5b6b6d
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SHA1
7d4ac2a53edc6fd9fc0a5c385bf9619e1395984b
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SHA256
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b
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SHA512
64f68877117e476ecc3fbccc9760660e6a2c071f96dd150652c4a1019a86f42b8abe444b4219dcf03a27c7de68ee3d28cc3b06ef8b529cf1434c8feb0d554d4a
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SSDEEP
12288:CLkpB0wrV3MrV4S5iTg7epZ/cyLQbzuwqJRNhUVTeaa8Z/xBOKl:exiT7ZQHhaReaaa81x8K
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
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0864PsawqS
Signatures
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Detected Djvu ransomware 18 IoCs
Processes:
resource yara_rule behavioral1/memory/4836-2-0x0000000003770000-0x000000000388B000-memory.dmp family_djvu behavioral1/memory/3052-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3052-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3052-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3052-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3052-13-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-16-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-18-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1784-34-0x0000000000400000-0x0000000000537000-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:
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-877519540-908060166-1852957295-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\52f29c22-a655-48ba-96c7-c7cc542810a2\\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe\" --AutoStart" c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.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 7 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exec71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exedescription pid process target process PID 4836 set thread context of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 set thread context of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.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:
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exec71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exepid process 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe 1784 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe 1784 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exec71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exec71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exedescription pid process target process PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 4836 wrote to memory of 3052 4836 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3052 wrote to memory of 3124 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe icacls.exe PID 3052 wrote to memory of 3124 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe icacls.exe PID 3052 wrote to memory of 3124 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe icacls.exe PID 3052 wrote to memory of 3096 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3052 wrote to memory of 3096 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3052 wrote to memory of 3096 3052 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe PID 3096 wrote to memory of 1784 3096 c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe"C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe"C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe"2⤵
- Checks computer location settings
- 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\52f29c22-a655-48ba-96c7-c7cc542810a2" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe"C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exe"C:\Users\Admin\AppData\Local\Temp\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.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\52f29c22-a655-48ba-96c7-c7cc542810a2\c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b.exeFilesize
808KB
MD56ba3c656ce436b2523104b0bbb5b6b6d
SHA17d4ac2a53edc6fd9fc0a5c385bf9619e1395984b
SHA256c71bd7ee3d81bea192703505bd91e06c70562f6d622649c3014e4a087ee3871b
SHA51264f68877117e476ecc3fbccc9760660e6a2c071f96dd150652c4a1019a86f42b8abe444b4219dcf03a27c7de68ee3d28cc3b06ef8b529cf1434c8feb0d554d4a
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memory/1784-23-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-16-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-32-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-17-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-31-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-30-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-18-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-21-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/1784-20-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3052-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3052-13-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3052-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3052-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3052-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3096-14-0x0000000001CE0000-0x0000000001D77000-memory.dmpFilesize
604KB
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memory/4836-1-0x0000000001B70000-0x0000000001C10000-memory.dmpFilesize
640KB
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memory/4836-2-0x0000000003770000-0x000000000388B000-memory.dmpFilesize
1.1MB