Analysis
- max time kernel
145s - max time network
83s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
10/06/2024, 16:29
General
- Target bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
- Size 747KB
- Sample240610-tzkxvstdqn
- SHA256 bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470
Malware Config
Extracted
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djvu
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http://fuyt.org/test1/get.php
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extension
.bbbw
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offline_id
jYeuANkMCJOEtaXsN8JcBUuEjwSP20EGT4t2Nct1
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payload_url
http://lencu.top/dl/build2.exe
http://fuyt.org/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. You can get and look video overview decrypt tool: https://we.tl/t-qqj8MrDVtG 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: 0382UIhfSd
Signatures
- Detected Djvu ransomware 18 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP 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
- UPX packed file 6 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of WriteProcessMemory 26 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.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\76382bc4-308c-43aa-b6b5-8b4f15252f85" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe"C:\Users\Admin\AppData\Local\Temp\bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
bbca183e72964dedca9d5421c33e2bc24e54c1326eeaea7ee6fd3823f3a45470.exe
memory/1820-9-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1820-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1820-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1820-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1820-7-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-35-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2352-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2528-8-0x0000000000400000-0x00000000004FE000-memory.dmp
memory/2528-0-0x0000000000400000-0x00000000004FE000-memory.dmp
memory/2528-2-0x0000000002070000-0x0000000002103000-memory.dmp
memory/2528-3-0x0000000002270000-0x000000000238B000-memory.dmp
memory/4452-23-0x0000000000400000-0x00000000004FE000-memory.dmp
memory/4452-18-0x0000000000400000-0x00000000004FE000-memory.dmp
memory/4452-16-0x0000000000400000-0x00000000004FE000-memory.dmp