farfli | 09f7e2ee55a0cebc3cc1152453836551d70ac3fd5d6edb14c1e05532aad2643f

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
08/09/2026, 04:34

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-09-07_d7d17755af26af81ee2eafafab803763_coinminer_elex_wannacry.exe
Size 414KB
Sample260908-e7jbnszygz
SHA256 09f7e2ee55a0cebc3cc1152453836551d70ac3fd5d6edb14c1e05532aad2643f
MD5 d7d17755af26af81ee2eafafab803763
SHA1 49353080f0b2bc230cd4fe46c2b81eb6390a0fa5
SHA512 4e650fae6fd19fb90a5f06dac29c48df57b21ed643e2e7e4be78644ab1d81cd80a3c6e027a56a5f64562b30c6489f36b6b75664ec05c9a83134926a18b361b4b
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19S:UGmTau+mMC4ITJE8dfSJ/F1
TLSH
T1FC94D02272D08BA3C1866032CE66E67CD3E5CC689C705E3773E9F65DEE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 3 IoCs

resource	yara_rule
behavioral2/memory/4240-9-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/4240-11-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/4240-13-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/4240-9-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4240-11-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4240-13-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2816-0-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/memory/2816-2-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/files/0x000700000001b858-3.dat	UPX
behavioral2/memory/6076-6-0x0000000000400000-0x0000000000492000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
3	4240	rundll32.exe
11	4240	rundll32.exe
12	4240	rundll32.exe
14	4240	rundll32.exe

Deletes itself 1 IoCs

pid	Process
6076	uxdzy.exe

Executes dropped EXE 1 IoCs

pid	Process
6076	uxdzy.exe

Loads dropped DLL 1 IoCs

pid	Process
4240	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-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\leyel\\wllra.dll\",InitEngine"	rundll32.exe

Enumerates connected drives 3 TTPs 23 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)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\n:	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\leyel	uxdzy.exe
File created	\??\c:\Program Files\leyel\wllra.dll	uxdzy.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
3264	cmd.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	2026-09-07_d7d17755af26af81ee2eafafab803763_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	uxdzy.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
3264	cmd.exe
4212	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
4212	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4240	rundll32.exe
4240	rundll32.exe
4240	rundll32.exe
4240	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4240	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2816	2026-09-07_d7d17755af26af81ee2eafafab803763_coinminer_elex_wannacry.exe
6076	uxdzy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 3264	2816	2026-09-07_d7d17755af26af81ee2eafafab803763_coinminer_elex_wannacry.exe	89
PID 3264 wrote to memory of 4212	3264	cmd.exe	91
PID 3264 wrote to memory of 6076	3264	cmd.exe	92
PID 6076 wrote to memory of 4240	6076	uxdzy.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-09-07_d7d17755af26af81ee2eafafab803763_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-07_d7d17755af26af81ee2eafafab803763_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\uxdzy.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-07_d7d17755af26af81ee2eafafab803763_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:3264
- - 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:4212
- - C:\Users\Admin\AppData\Local\Temp\uxdzy.exe
    C:\Users\Admin\AppData\Local\Temp\\uxdzy.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-07_d7d17755af26af81ee2eafafab803763_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:6076
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\leyel\wllra.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\uxdzy.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)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4240

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

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

uxdzy.exe

Path C:\Users\Admin\AppData\Local\Temp\uxdzy.exe
Size 414KB
SHA256 9620f2ce54c3201a0bc3dd15a7c2f8803c6e8afb3db3f368ae95783f280d5d8f
MD5 104000783e79eae0237ac0a7d80c0c9f
SHA1 8eb173c3a5d9ec34ac1af05cae390ae30436c2ce
SHA512 8cb73ceedf2486b0070d52e09d8a2d756ab5d8f8e4594ab444c5ba6a7c96d9f996e2af7e326f9efd20fea1b7f83be56b074519dfb37c91019c5f257009baf23f
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19S:UGmTau+mMC4ITJE8dfSJ/F1
TLSH
T1B094D02272D08BA3C1866032CE66E67CD3E5CC689C705E3773E9F65DEE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

wllra.dll

Path \??\c:\Program Files\leyel\wllra.dll
Size 176KB
SHA256 8c36b15cd21bd089d95b2db065b7a8f3e1097f6a97e15d3c05b1b92c3c5f3ffe
MD5 00a8517a2646052800288ab073520cda
SHA1 1c1058ce49671ba6852de8497f7b3d9577695a3b
SHA512 882f0d61c1a6d843970a4579a227f50a74dfc696bc7f0dfab2551f2fb722bd6ca932a33c79df2064ffe9f9d65420bddafcbce97b10381a8b21b7e7fa9de5f3ad
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocD:1Jv2tOItshGYdMnYYVjasKbOWSFofD
TLSH
T1BD041261862D1C34D087B7717B05920DFAB452A49179CBD3F7B8AF2B3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2816-0-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/2816-2-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/4240-9-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/4240-12-0x000000001005A000-0x000000001005B000-memory.dmp

Download

memory/4240-11-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/4240-13-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/6076-6-0x0000000000400000-0x0000000000492000-memory.dmp

Download