farfli | 861b086a0268342d68fa8e06523b94f80bcfb54192ed13be2dd7e6b26da6adb9

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/10/2026, 15:25

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_elex_wannacry.exe
Size 406KB
Sample261002-stzcmaxsgv
SHA256 861b086a0268342d68fa8e06523b94f80bcfb54192ed13be2dd7e6b26da6adb9
MD5 48f5ded1e95f19a47cfc9c52da12f3de
SHA1 bc1ed531b18ac1a3b6aca8d0934cab11eae9d1a0
SHA512 5c755140c522025c671781515b6cd35a4722a7127c5f4778c89aabdf04d82442bb2153a081bd5cf6d71a8de2b72792e2f38c792bcea1f0f231ea034398f0cbf8
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19Sj:UGmTau+mMC4ITJE8dfSJ/F1Q
TLSH
T1A394D02272D08BA3C1866032CDA6EA7CD3E5CD689C705E3773E9F65DDE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli persistence spyware stealer

Malware Config

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli

Detects Farfli Backdoor 2 IoCs

resource	yara_rule
behavioral2/memory/776-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/776-13-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/776-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/776-13-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/5588-0-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/memory/5588-2-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/files/0x0007000000011392-3.dat	UPX
behavioral2/memory/1004-6-0x0000000000400000-0x0000000000492000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
7	776	rundll32.exe
9	776	rundll32.exe
10	776	rundll32.exe
11	776	rundll32.exe

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
1004	tniukxht.exe

Executes dropped EXE 1 IoCs

pid	Process
1004	tniukxht.exe

Loads dropped DLL 1 IoCs

pid	Process
776	rundll32.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\zbgem\\mwyisyuo.dll\",InitEngine"	rundll32.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
	\??\f:\	rundll32.exe

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.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\zbgem	tniukxht.exe
File created	\??\c:\Program Files\zbgem\mwyisyuo.dll	tniukxht.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5080	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	rundll32.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tniukxht.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5080	cmd.exe
2300	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2300	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
776	rundll32.exe
776	rundll32.exe
776	rundll32.exe
776	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	776	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5588	2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_elex_wannacry.exe
1004	tniukxht.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5588 wrote to memory of 5080	5588	2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_elex_wannacry.exe	89
PID 5080 wrote to memory of 2300	5080	cmd.exe	91
PID 5080 wrote to memory of 1004	5080	cmd.exe	92
PID 1004 wrote to memory of 776	1004	tniukxht.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5588
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tniukxht.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5080
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2300
- - C:\Users\Admin\AppData\Local\Temp\tniukxht.exe
    C:\Users\Admin\AppData\Local\Temp\\tniukxht.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-01_48f5ded1e95f19a47cfc9c52da12f3de_coinminer_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
    PID:1004
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\zbgem\mwyisyuo.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\tniukxht.exe
      4⤵
      Badlisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:776

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tniukxht.exe

Path C:\Users\Admin\AppData\Local\Temp\tniukxht.exe
Size 406KB
SHA256 78707b776242a39d8a670fad6e5294dc19c0792231556479b6b3ec47349a50c2
MD5 12df95e7dda33c0d227d6d7f6b8fbfd7
SHA1 94f7a512966d9d3b02a3b7a839257aee55258742
SHA512 90f1ac3272f1c287ceefdfa55cc67f220063b8bfb460e5f87cef0e9ac4b67ec2564c70c9de2f0571c701d0667fb2f110c8be642ed3b9237aa31c31a121f69dd7
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19SF:UGmTau+mMC4ITJE8dfSJ/F1K
TLSH
T12294D02272D08BA3C1866032CDA6EA7CD3E5CD689C705E3773E9F65DDE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

mwyisyuo.dll

Path \??\c:\Program Files\zbgem\mwyisyuo.dll
Size 176KB
SHA256 9144f04c39eb0c4ee914610e6e4327bcd7084e74527d43e9ded2efa0849fa020
MD5 385022be3967ef065db12bb33de7e106
SHA1 ffa7ebb4981206ff983504d64acc30e155e7bead
SHA512 ab70aa57e34fa1e530be013749e7e71277c285267d272daad74275240dc0e8a552f887777080f22d291bba6abf517b494f95b34d1156c5a26d71f6bd949b8a21
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFooc3:1Jv2tOItshGYdMnYYVjasKbOWSFof3
TLSH
T111041261862D1C34D087B7717B05920DF6B453A49179CB93F7B8AF2B3D12AEA806E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/776-10-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/776-9-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/776-12-0x000000001005A000-0x000000001005B000-memory.dmp

Download

memory/776-13-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/1004-6-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/5588-0-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/5588-2-0x0000000000400000-0x0000000000492000-memory.dmp

Download