farfli | a90d1aa6419e33a7e53746840c30760db49dad3a8ace737363d06614f21b0521

General

Target
2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_coinminer_elex_wannacry.exe
Size 404KB
Sample260907-kk16vsfh28
SHA256 a90d1aa6419e33a7e53746840c30760db49dad3a8ace737363d06614f21b0521
MD5 03a644ebc8738a143e5e1bcf8414b2b1
SHA1 dc82069655e9c6677259b33e1612c27359448625
SHA512 d9052edbc28b8433479fa0375a3f10810dcc4ac9946c30479e37186634d39e4d7d24d896cab3bc66ba24b7d733c79c94f23e79032c492de1d299b7edb0b5384b
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LSQ:jGmTju+mMC4ITJE8dfSJ/F6h
TLSH
T15494D02272C08BA3C1866432CDA6EA7CD3E5CD689C705E3773E9F65EDD36941423A274
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/3976-8-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/3976-6-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/3976-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/3976-8-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3976-6-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3976-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x001300000001b1d0-1.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
3	3976	rundll32.exe
6	3976	rundll32.exe
7	3976	rundll32.exe
14	3976	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2260	jlygwtc.exe

Executes dropped EXE 1 IoCs

pid	Process
2260	jlygwtc.exe

Loads dropped DLL 1 IoCs

pid	Process
3976	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-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\nbool\\ewvtv.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)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	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\nbool	jlygwtc.exe
File created	\??\c:\Program Files\nbool\ewvtv.dll	jlygwtc.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
4104	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jlygwtc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_coinminer_elex_wannacry.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
4104	cmd.exe
3372	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
3372	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3976	rundll32.exe
3976	rundll32.exe
3976	rundll32.exe
3976	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3976	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4584	2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_coinminer_elex_wannacry.exe
2260	jlygwtc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4584 wrote to memory of 4104	4584	2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_coinminer_elex_wannacry.exe	87
PID 4104 wrote to memory of 3372	4104	cmd.exe	89
PID 4104 wrote to memory of 2260	4104	cmd.exe	91
PID 2260 wrote to memory of 3976	2260	jlygwtc.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\jlygwtc.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_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:4104
- - 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:3372
- - C:\Users\Admin\AppData\Local\Temp\jlygwtc.exe
    C:\Users\Admin\AppData\Local\Temp\\jlygwtc.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-06_03a644ebc8738a143e5e1bcf8414b2b1_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:2260
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\nbool\ewvtv.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\jlygwtc.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:3976

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

jlygwtc.exe

Path C:\Users\Admin\AppData\Local\Temp\jlygwtc.exe
Size 404KB
SHA256 749693d7bb06484961e7e9edddaf5d64d60f5bb12a6f8445a7833562de39f4d5
MD5 c77ac4725858ab3e5b7d05da2c865327
SHA1 c1a52ec2977cfeebd1201e21cd57c92a19e11b42
SHA512 73dfb71bdd363d17b191b7424131f684b6609be8774154b61d91787ad7fdd148b8e71279808037ac3e8eecfc78c65a42fc613d26b543881c559c06aa09f358cb
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LSf:jGmTju+mMC4ITJE8dfSJ/F64
TLSH
T12A94D02272C08BA3C1866432CDA6EA7CD3E5CD689C705E3773E9F65EDD36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ewvtv.dll

Path \??\c:\Program Files\nbool\ewvtv.dll
Size 176KB
SHA256 0be086b63e3ea02e98c560a843e84516e202766e88b524bd20094f2088a6d054
MD5 b2557d29add77b19d753d5e7462cc76f
SHA1 0ec6b6d393919157ff34fc428cb3a00bc6a33cae
SHA512 70a46efc2bfcc40a413cc2a25b11919c22bd6c03a3366e67546e1da112be7f6d33134ebeacbb574066ad56327680198fa8172d33ad716025cf8ff6a26cc1c29b
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocL:1Jv2tOItshGYdMnYYVjasKbOWSFofL
TLSH
T1FB041261862D1C34D087B7717B05920DF6B453A49079CB93F7B8AF2B3D12AEA806E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3976-8-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/3976-9-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/3976-6-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/3976-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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