farfli | 7faf52b62a58e822a97908e6669b73d67fcef537533bb7578c13fa02cc356d8b

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/08/2026, 00:58

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-08-15_0cdd80812bdc58f8892c9707949a0118_coinminer_elex_wannacry.exe
Size 413KB
Sample260816-bbtwraxajb
SHA256 7faf52b62a58e822a97908e6669b73d67fcef537533bb7578c13fa02cc356d8b
MD5 0cdd80812bdc58f8892c9707949a0118
SHA1 cc9226ece5bb6739968a3006704471c75086f3f8
SHA512 acfa68f0cd071cf3c06bd56c5ed783a0b5d6e6217e12bbe91ed6672022fd6fe0a57fa203b365d6d3c165a3dc358390876eaf7125f0905cdb4d2ab08c549e2858
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19SO:UGmTau+mMC4ITJE8dfSJ/F1v
TLSH
T14A94D02272D08BA3C1866032CE66E67CD3E5CD689C705E3773E9F65DEE36941423A274
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 2 IoCs

resource	yara_rule
behavioral2/memory/2156-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/2156-13-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2156-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2156-13-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3448-0-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/memory/3448-2-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/files/0x0013000000016db3-3.dat	UPX
behavioral2/memory/5588-6-0x0000000000400000-0x0000000000492000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	2156	rundll32.exe
3	2156	rundll32.exe
4	2156	rundll32.exe
5	2156	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5588	njbcw.exe

Executes dropped EXE 1 IoCs

pid	Process
5588	njbcw.exe

Loads dropped DLL 1 IoCs

pid	Process
2156	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-1-5-21-3986082593-3624157295-3514260330-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\bpfqf\\yyjdvlsw.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)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
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)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	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)	\??\j:	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\bpfqf	njbcw.exe
File created	\??\c:\Program Files\bpfqf\yyjdvlsw.dll	njbcw.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
4980	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	njbcw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-15_0cdd80812bdc58f8892c9707949a0118_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

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
4980	cmd.exe
5920	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
5920	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe
2156	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3448	2026-08-15_0cdd80812bdc58f8892c9707949a0118_coinminer_elex_wannacry.exe
5588	njbcw.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3448 wrote to memory of 4980	3448	2026-08-15_0cdd80812bdc58f8892c9707949a0118_coinminer_elex_wannacry.exe	89
PID 4980 wrote to memory of 5920	4980	cmd.exe	91
PID 4980 wrote to memory of 5588	4980	cmd.exe	92
PID 5588 wrote to memory of 2156	5588	njbcw.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-15_0cdd80812bdc58f8892c9707949a0118_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-15_0cdd80812bdc58f8892c9707949a0118_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\njbcw.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-15_0cdd80812bdc58f8892c9707949a0118_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:4980
- - 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:5920
- - C:\Users\Admin\AppData\Local\Temp\njbcw.exe
    C:\Users\Admin\AppData\Local\Temp\\njbcw.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-15_0cdd80812bdc58f8892c9707949a0118_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:5588
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\bpfqf\yyjdvlsw.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\njbcw.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:2156

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

njbcw.exe

Path C:\Users\Admin\AppData\Local\Temp\njbcw.exe
Size 413KB
SHA256 dd5df8f9c62a2e8e838d58c4c95aab22cdb734e4ebc14ad8f6fcaaaecebb36e8
MD5 be21eb21de2676da4855885a4af7f9cb
SHA1 1e8ad78d3ba1c4cfa988a053c3d403a6d55c6c57
SHA512 a59dd6061a82f0d09923840d4a1203c47c0894c06af0d7d6dd5d9566a369f73be0e796b51a4eecfd1b6b8f7ec84051fc907f8071b45f6c9ab0c8eb1d946f036b
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19S4:UGmTau+mMC4ITJE8dfSJ/F17
TLSH
T15594D02272D08BA3C1866432CE66E67CD3E5CC689C705E3773E9F65DEE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

yyjdvlsw.dll

Path \??\c:\Program Files\bpfqf\yyjdvlsw.dll
Size 176KB
SHA256 d308d3d42cd04e5442cef90f5a940c2455dc33088441ff1d01f4c0e11d5dc22a
MD5 11cb80e62f90afd751b68472cae6877a
SHA1 f0460aed127d69317b881976de7f5d7573a2c971
SHA512 36a29bbee0da316e87ed7edbb366e4865d2ca346e282857f1867a145ba8cb79b79e0af71fc20b86c15f1a9da26a0525aac2738882475605b1aa5fbd0a9364247
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocz:1Jv2tOItshGYdMnYYVjasKbOWSFofz
TLSH
T1980412A1866D1C30D087B3717F05920DF6B452A49179CB93F7B8AF1B3D12AEA806E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2156-9-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/2156-12-0x000000001005A000-0x000000001005B000-memory.dmp

Download

memory/2156-10-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/2156-13-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/3448-0-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/3448-2-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/5588-6-0x0000000000400000-0x0000000000492000-memory.dmp

Download