Analysis
- max time kernel
149s - max time network
132s - platform
windows10-2004_x64 - resource
win10v2004-20250610-en - resource tags
- submitted
17/06/2025, 23:14
General
- Target 5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
- Size 669KB
- Sample250617-28f92aspx3
- SHA256 5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18
Malware Config
Extracted
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C:\ProgramData\_readme.txt
- ATTENTION! Don't worry my friend, 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-T9WE5uiVT6 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" 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: 046Sdsd3273yifhsisySD60h7mFQcjRC3pDgsRcrWZ7K7bdAgvgDos224DmXt1
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https://we.tl/t-T9WE5uiVT6
Signatures
- Renames multiple (152) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- 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
- Drops desktop.ini file(s) 25 IoCs
- Looks up external IP address via web service 6 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 3 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe"C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.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\c23d3fb3-6888-4422-b9fd-2fc2c39d4cc8" /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\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe"C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --Admin IsNotAutoStart IsNotTask2⤵
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe"C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --ForNetRes "FsnDCf1u1wJvLcqbFxxtOchBf2V2lgtk24oM5mt2" 0h7mFQcjRC3pDgsRcrWZ7K7bdAgvgDos224DmXt1 IsNotAutoStart IsNotTask3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe"C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --Service 4560 "FsnDCf1u1wJvLcqbFxxtOchBf2V2lgtk24oM5mt2" 0h7mFQcjRC3pDgsRcrWZ7K7bdAgvgDos224DmXt14⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5408 -s 10925⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 17924⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe"C:\Users\Admin\AppData\Local\Temp\5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe" --Service 4712 "FsnDCf1u1wJvLcqbFxxtOchBf2V2lgtk24oM5mt2" 0h7mFQcjRC3pDgsRcrWZ7K7bdAgvgDos224DmXt13⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4216 -s 21242⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4216 -ip 42161⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5408 -ip 54081⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4560 -ip 45601⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
edbtmp.log
dotnet-host-6.0.27-win-x64.msi
vc_runtimeMinimum_x64.msi
dotnet-runtime-7.0.16-win-x64.msi
windowsdesktop-runtime-6.0.27-win-x64.msi
_readme.txt
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
5da0116af495e6d8af7241da9b8281d918b9ff9a98a3deab4cca1aec1e456c18.exe
memory/4216-14-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4216-3-0x0000000000400000-0x0000000000476000-memory.dmp
memory/4216-0-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4216-2-0x0000000000560000-0x0000000000660000-memory.dmp
memory/4216-15-0x0000000000400000-0x0000000000476000-memory.dmp
memory/4560-34-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4560-30-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4560-39-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4712-25-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4712-31-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4712-23-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4712-18-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4712-17-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/4712-12-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/5408-36-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/5408-38-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/5792-32-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/5792-28-0x0000000000400000-0x00000000004A9000-memory.dmp
memory/5792-27-0x0000000000400000-0x00000000004A9000-memory.dmp