farfli | 6b4b820891da6efab37ccab9f28f63426926f5137699c91a2579fb89acca3926

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
18/07/2026, 01:55

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-07-17_d527dbc5b0b833423aa11130f1a34712_coinminer_elex_wannacry.exe
Size 311KB
Sample260718-cb4lmags5w
SHA256 6b4b820891da6efab37ccab9f28f63426926f5137699c91a2579fb89acca3926
MD5 d527dbc5b0b833423aa11130f1a34712
SHA1 94101f834e68dae7b242407e82dd629f749964eb
SHA512 daf6ece73d651e3d852926ccd618225e79be51df0ed769a0426f0b9d17190d7e4a932aa7001ac5c4e5d6cc2d8f4eeef26e5bac56ed513b764221af375bce77a3
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOy:ywLcCmuErglr73aAD+H
TLSH
T12164F142D511CF47FC2FCAB6823E1E355317AE553B205693D3C8BA1F65B2B42A63A0D8
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer upx

Malware Config

Signatures

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

Detects Farfli Backdoor 7 IoCs

resource	yara_rule
behavioral2/memory/5840-10-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5840-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5840-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5840-17-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5840-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5840-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5840-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/5840-10-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5840-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5840-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5840-17-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5840-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5840-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5840-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4560-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/4560-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x0008000000019ce0-3.dat	UPX
behavioral2/memory/4580-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
4	5840	rundll32.exe
8	5840	rundll32.exe
9	5840	rundll32.exe
10	5840	rundll32.exe
14	5840	rundll32.exe
17	5840	rundll32.exe
18	5840	rundll32.exe
21	5840	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4580	qnbnz.exe

Executes dropped EXE 1 IoCs

pid	Process
4580	qnbnz.exe

Loads dropped DLL 1 IoCs

pid	Process
5840	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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\nbzti\\lmlbk.dll\",GetProc"	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)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4560-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/4560-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x0008000000019ce0-3.dat	upx
behavioral2/memory/4580-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\nbzti	qnbnz.exe
File created	\??\c:\Program Files\nbzti\lmlbk.dll	qnbnz.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
3944	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	qnbnz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-17_d527dbc5b0b833423aa11130f1a34712_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
3944	cmd.exe
4684	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
4684	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5840	rundll32.exe
5840	rundll32.exe
5840	rundll32.exe
5840	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5840	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4560	2026-07-17_d527dbc5b0b833423aa11130f1a34712_coinminer_elex_wannacry.exe
4580	qnbnz.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4560 wrote to memory of 3944	4560	2026-07-17_d527dbc5b0b833423aa11130f1a34712_coinminer_elex_wannacry.exe	88
PID 3944 wrote to memory of 4684	3944	cmd.exe	90
PID 3944 wrote to memory of 4580	3944	cmd.exe	92
PID 4580 wrote to memory of 5840	4580	qnbnz.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-17_d527dbc5b0b833423aa11130f1a34712_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-17_d527dbc5b0b833423aa11130f1a34712_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qnbnz.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-17_d527dbc5b0b833423aa11130f1a34712_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:3944
- - 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:4684
- - C:\Users\Admin\AppData\Local\Temp\qnbnz.exe
    C:\Users\Admin\AppData\Local\Temp\\qnbnz.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-17_d527dbc5b0b833423aa11130f1a34712_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:4580
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\nbzti\lmlbk.dll",GetProc C:\Users\Admin\AppData\Local\Temp\qnbnz.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:5840

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

qnbnz.exe

Path C:\Users\Admin\AppData\Local\Temp\qnbnz.exe
Size 311KB
SHA256 048223010d8614cf4085f61111b1d7f7b8cc65272a47631a1630b8cdbc6bc042
MD5 36f41b3bc3b8e33d036a4bde1515d8e5
SHA1 a7f2f0ca92210cfbcf95b2a3bbbd94b1475fabce
SHA512 d062acbdd84c8e755f46ed7a6727dd3bd770e2d91ddeafceea8edc8aa0f0a9f92ebaacb48bea1ede4471b7fc71c31f3edc048519f0bf966e7a6cb5c68ba288bd
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOm:ywLcCmuErglr73aAD+9
TLSH
T1AB64F141D511CF47FC2FCAB6823E1E355317AE553B2056A3D3C8BA1F65B2B42A63A0D8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

lmlbk.dll

Path \??\c:\Program Files\nbzti\lmlbk.dll
Size 218KB
SHA256 32fa1bc44fff649bc78fbcd5f6971d8e130bbd0981096d85283979aac763929b
MD5 d85f39c619bcd0aa781666af753180b1
SHA1 76c248eda630aa28e4d88c530d55e9406ea550fa
SHA512 313f8fafff34944840a5b5c1ca83991f24125aad3053adbb7d57219ef9381994670f7f34118c76a2d9562f29abc0628caa920a2e01d90c0e138896ee445cbdbe
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauyt9:pnNwDTi3swddDiROXI7
TLSH
T13824128BCF983873C5223379597951A0B9724290AFA1534DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4560-0-0x0000000000400000-0x0000000000483000-memory.dmp

Download

memory/4560-2-0x0000000000400000-0x0000000000483000-memory.dmp

Download

memory/4580-6-0x0000000000400000-0x0000000000483000-memory.dmp

Download

memory/5840-10-0x0000000010000000-0x0000000010058000-memory.dmp

Download

memory/5840-9-0x0000000010000000-0x0000000010058000-memory.dmp

Download

memory/5840-12-0x0000000010000000-0x0000000010058000-memory.dmp

Download

memory/5840-14-0x0000000001080000-0x0000000001081000-memory.dmp

Download

memory/5840-15-0x0000000010000000-0x0000000010058000-memory.dmp

Download

memory/5840-17-0x0000000010000000-0x0000000010058000-memory.dmp

Download

memory/5840-18-0x0000000010000000-0x0000000010058000-memory.dmp

Download

memory/5840-19-0x0000000010000000-0x0000000010058000-memory.dmp

Download

memory/5840-20-0x0000000010000000-0x0000000010058000-memory.dmp

Download