Analysis
- max time kernel
141s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
05/11/2024, 03:18
General
- Target c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
- Size 983KB
- Sample241105-dtxrgatbpg
- SHA256 c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286
Malware Config
Extracted
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djvu
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http://dell1.ug/hosuhf37t5iqy3guygg6w4guiner/37tiuywgw/get.php
-
extension
.meds
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offline_id
Pq9d1D32xIxjAlRK7OkLl3utdbWN8syVVEm35xt1
-
payload_url
http://dell1.ug/files/cost/updatewin1.exe
http://dell1.ug/files/cost/updatewin2.exe
http://dell1.ug/files/cost/updatewin.exe
http://dell1.ug/files/cost/3.exe
http://dell1.ug/files/cost/4.exe
http://dell1.ug/files/cost/5.exe
-
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like photos, 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. You can get and look video overview decrypt tool: https://we.tl/t-ZFjRnJfc9f Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 162Ad768734uygjdfg
Signatures
- Detected Djvu ransomware 9 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Djvu family
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Modifies file permissions 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe"C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\cfb856b6-1cd7-40b9-b3c0-4fb4399084d5" /deny *S-1-1-0:(OI)(CI)(DE,DC)2⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe"C:\Users\Admin\AppData\Local\Temp\c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe" --Admin IsNotAutoStart IsNotTask2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 17962⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2144 -ip 21441⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
c2716fcc735a4f1b9fce29cb1dc20a26969b71f615e2b119e9680f015379d286.exe
memory/540-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/540-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/540-18-0x0000000000400000-0x0000000000537000-memory.dmp
memory/540-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/540-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/540-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2144-1-0x00000000023A0000-0x0000000002470000-memory.dmp
memory/2144-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2144-2-0x0000000002470000-0x000000000258A000-memory.dmp
memory/2144-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2144-27-0x0000000002470000-0x000000000258A000-memory.dmp