farfli | 8974fd3c6a16fde79c6bd85a3bf5133912d7117516fc67a1bd820f67df3a34ba

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
10/08/2026, 04:33

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_coinminer_elex_wannacry.exe
Size 407KB
Sample260810-e6nvrsvzdx
SHA256 8974fd3c6a16fde79c6bd85a3bf5133912d7117516fc67a1bd820f67df3a34ba
MD5 83bc78d29818bc3be0bcfab3f990a9c7
SHA1 b1b8db47833e11d1af2cdf9483d8d27607f85b0b
SHA512 89c41d868360d81ae8cf0fe9e206e8e7f6e60377caf2689cf9c487476d687ea7ca033637b9ac5312d81595705c8b89037a6047399c121ea5ad57a2adb8a2a6de
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum49:zdE3sJd1fm/+yb3OYs84/JHd9
TLSH
T13494AF01E7C351D6DE82257081FA7376B378DA4D0F12C7E3BBA8EE2E6E21191953B119
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
behavioral1/memory/4388-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/4388-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/4388-20-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/4388-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4388-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4388-20-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/4784-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/4784-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x0009000000024356-4.dat	UPX
behavioral1/memory/1004-11-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x00080000000244b1-10.dat	UPX
behavioral1/memory/4388-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/4388-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/4388-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/4388-20-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
1004	wtnzds.exe

Executes dropped EXE 2 IoCs

pid	Process
1004	wtnzds.exe
4388	elo.exe

Loads dropped DLL 1 IoCs

pid	Process
4388	elo.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-1-5-21-876885714-46325919-1482798410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\zbdsn\\elo.exe \"c:\\Program Files\\zbdsn\\eloug.dll\",Viewer"	elo.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)	\??\k:	elo.exe
File opened (read-only)	\??\o:	elo.exe
File opened (read-only)	\??\q:	elo.exe
File opened (read-only)	\??\u:	elo.exe
File opened (read-only)	\??\z:	elo.exe
File opened (read-only)	\??\h:	elo.exe
File opened (read-only)	\??\n:	elo.exe
File opened (read-only)	\??\p:	elo.exe
File opened (read-only)	\??\s:	elo.exe
File opened (read-only)	\??\t:	elo.exe
File opened (read-only)	\??\a:	elo.exe
File opened (read-only)	\??\b:	elo.exe
File opened (read-only)	\??\l:	elo.exe
File opened (read-only)	\??\m:	elo.exe
File opened (read-only)	\??\r:	elo.exe
File opened (read-only)	\??\x:	elo.exe
File opened (read-only)	\??\y:	elo.exe
File opened (read-only)	\??\e:	elo.exe
File opened (read-only)	\??\g:	elo.exe
File opened (read-only)	\??\i:	elo.exe
File opened (read-only)	\??\j:	elo.exe
File opened (read-only)	\??\v:	elo.exe
File opened (read-only)	\??\w:	elo.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	elo.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\zbdsn\elo.exe	wtnzds.exe
File opened for modification	\??\c:\Program Files\zbdsn\elo.exe	wtnzds.exe
File opened for modification	\??\c:\Program Files\zbdsn	wtnzds.exe
File created	\??\c:\Program Files\zbdsn\eloug.dll	wtnzds.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
3124	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	2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_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	wtnzds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	elo.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
3124	cmd.exe
2176	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	elo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	elo.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2176	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4388	elo.exe
4388	elo.exe
4388	elo.exe
4388	elo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4388	elo.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4784	2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_coinminer_elex_wannacry.exe
1004	wtnzds.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4784 wrote to memory of 3124	4784	2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_coinminer_elex_wannacry.exe	88
PID 3124 wrote to memory of 2176	3124	cmd.exe	90
PID 3124 wrote to memory of 1004	3124	cmd.exe	91
PID 1004 wrote to memory of 4388	1004	wtnzds.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wtnzds.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_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:3124
- - 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:2176
- - C:\Users\Admin\AppData\Local\Temp\wtnzds.exe
    C:\Users\Admin\AppData\Local\Temp\\wtnzds.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-10_83bc78d29818bc3be0bcfab3f990a9c7_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:\Program Files\zbdsn\elo.exe
      "c:\Program Files\zbdsn\elo.exe" "c:\Program Files\zbdsn\eloug.dll",Viewer C:\Users\Admin\AppData\Local\Temp\wtnzds.exe
      4⤵
      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
      PID:4388

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

elo.exe

Path C:\Program Files\zbdsn\elo.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

wtnzds.exe

Path C:\Users\Admin\AppData\Local\Temp\wtnzds.exe
Size 407KB
SHA256 8010c6ad2e012e37e147760f71ec457ed79610c8ad1fd764a0ccac595ccb6647
MD5 f85a0dfb693d0be8621a5ebc51c3c396
SHA1 34eccdc82bb17db66f4ec0a16885e9a24777316a
SHA512 1690b8280d2041ce9f796b9e68d840315db9c67bdd04c9bcf02f15e63b51d9d3a0bb5d4436d71ed59510a4c8dc3b63192425a7b4337564e38287d5e82a083f38
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum45:zdE3sJd1fm/+yb3OYs84/JHd5
TLSH
T15B94AF01E7C351D6DE82257081FA7376B378DA4D0F12C7E3BBA8EE2E6E21191953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

eloug.dll

Path \??\c:\Program Files\zbdsn\eloug.dll
Size 89KB
SHA256 fcb135ae9082905aa9e9138f7aeb2c228c979318d742b00b7e1daeaffc6f7a8e
MD5 7f892b2e67f5f46a18e5712d241cf4b9
SHA1 734dfdc6789d4e9ba3a3aedc5bf7cc3e90358139
SHA512 4aa89ab043a8ad96bfb56daf9aa28415f1bd1c66e1abfb6569a4a6c78c4c2a1d51b78da54ffd5d417b3c45046df15d1ee5873739911f231245fed4a0a0edbbf2
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGP:M1uF6Feu2NlQOBcGP
TLSH
T12F9302C45669CD8BCCD87072727FAA4EE631D48CB941ACB34A5E13A31B36AF3D41A705
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1004-11-0x0000000000400000-0x0000000000471000-memory.dmp

Download

memory/4388-14-0x0000000010000000-0x0000000010033000-memory.dmp

Download

memory/4388-15-0x0000000010000000-0x0000000010033000-memory.dmp

Download

memory/4388-17-0x0000000010000000-0x0000000010033000-memory.dmp

Download

memory/4388-20-0x0000000010000000-0x0000000010033000-memory.dmp

Download

memory/4784-0-0x0000000000400000-0x0000000000471000-memory.dmp

Download

memory/4784-2-0x0000000000400000-0x0000000000471000-memory.dmp

Download