Analysis
- max time kernel
149s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
21/04/2026, 03:46
General
- Target 2026-04-21_8432defbad2a54155a46bfbff06a15ec_elex_wannacry.exe
- Size 369KB
- Sample260421-ebryyabs7t
- SHA256 fa97e715c8460b531058490a1ed3bb691a72f8274d2b9af3f990a6853b520bc4
Malware Config
Extracted
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gh0strat
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107.163.56.251:6658
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http://107.163.56.240:18963/main.php
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http://107.163.56.241:18530/
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user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)
Signatures
- Family: Farfli
Farfli is a Windows backdoor written in C++.
- Family: Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
- Detects Farfli Backdoor 4 IoCs
- Detects executables containing base64 encoded User Agent 4 IoCs
- Deletes itself 1 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 1 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Drops file in Program Files directory 4 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2026-04-21_8432defbad2a54155a46bfbff06a15ec_elex_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-21_8432defbad2a54155a46bfbff06a15ec_elex_wannacry.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tmjiubotb.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-21_8432defbad2a54155a46bfbff06a15ec_elex_wannacry.exe"2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Local\Temp\tmjiubotb.exeC:\Users\Admin\AppData\Local\Temp\\tmjiubotb.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-21_8432defbad2a54155a46bfbff06a15ec_elex_wannacry.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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\??\c:\Program Files\ngvvuju\rzt.exe"c:\Program Files\ngvvuju\rzt.exe" "c:\Program Files\ngvvuju\rztdc.dll",Compliance C:\Users\Admin\AppData\Local\Temp\tmjiubotb.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
rzt.exe
tmjiubotb.exe
rztdc.dll
memory/4152-17-0x0000000010000000-0x000000001004F000-memory.dmp
memory/4152-18-0x0000000000D30000-0x0000000000D31000-memory.dmp
memory/4152-19-0x0000000010000000-0x000000001004F000-memory.dmp
memory/4152-21-0x0000000010000000-0x000000001004F000-memory.dmp
memory/4152-22-0x0000000003730000-0x0000000003749000-memory.dmp
memory/4152-25-0x0000000010000000-0x000000001004F000-memory.dmp
memory/4604-7-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4604-14-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4604-12-0x0000000000810000-0x0000000000A91000-memory.dmp
memory/4776-2-0x00000000008E0000-0x0000000000B61000-memory.dmp
memory/4776-3-0x0000000000400000-0x0000000000458000-memory.dmp
memory/4776-0-0x0000000000400000-0x0000000000458000-memory.dmp