farfli | 665ce969de9ad791f42d8fc64635c2981d22b507008fc34af8666fe68579f85f

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/08/2026, 04:26

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General

Target
2026-08-10_8d2fc4683594ef6fa9e35bb97b2fc294_elex_wannacry.exe
Size 179KB
Sample260810-e2zfps1dmh
SHA256 665ce969de9ad791f42d8fc64635c2981d22b507008fc34af8666fe68579f85f
MD5 8d2fc4683594ef6fa9e35bb97b2fc294
SHA1 e62baf0db11ac991b308061cc6380d1e2888fe4e
SHA512 83b8ee64edc347e528aac5562eec718f05a0503ff982937839efc052a201f27af02a058cc2d950480fba92dc6b27167e938bba3c010a3a21bf3ffaa9b95b9d99
SSDEEP 3072:DK4RNx6gb4RoIwZpx10ZENfrGSQ7sDU/ySkNAq:Dl6exiZuKoDkySkNA
TLSH
T14304CF8A5B76CADAF1112C74D29816F34252DC9DFB1453638388FF4FB832E919C36165
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/5060-10-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral2/memory/5060-12-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/5060-10-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5060-12-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
2	5060	rundll32.exe
4	5060	rundll32.exe
3	5060	rundll32.exe
6	5060	rundll32.exe
7	5060	rundll32.exe
8	5060	rundll32.exe
9	5060	rundll32.exe
10	5060	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4180	luexf.exe

Executes dropped EXE 1 IoCs

pid	Process
4180	luexf.exe

Loads dropped DLL 1 IoCs

pid	Process
5060	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\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\hnqxv\\hlwcx.dll\",init"	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)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\b:	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	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

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
4600	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_8d2fc4683594ef6fa9e35bb97b2fc294_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	luexf.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
4600	cmd.exe
4308	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
4308	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5060	rundll32.exe
5060	rundll32.exe
5060	rundll32.exe
5060	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5060	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4344	2026-08-10_8d2fc4683594ef6fa9e35bb97b2fc294_elex_wannacry.exe
4180	luexf.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 4600	4344	2026-08-10_8d2fc4683594ef6fa9e35bb97b2fc294_elex_wannacry.exe	89
PID 4600 wrote to memory of 4308	4600	cmd.exe	91
PID 4600 wrote to memory of 4180	4600	cmd.exe	92
PID 4180 wrote to memory of 5060	4180	luexf.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-10_8d2fc4683594ef6fa9e35bb97b2fc294_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-10_8d2fc4683594ef6fa9e35bb97b2fc294_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\luexf.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-10_8d2fc4683594ef6fa9e35bb97b2fc294_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:4600
- - 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:4308
- - \??\c:\luexf.exe
    c:\luexf.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-10_8d2fc4683594ef6fa9e35bb97b2fc294_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4180
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\hnqxv\hlwcx.dll",init c:\luexf.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:5060

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

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Downloads

hlwcx.dll

Path \??\c:\hnqxv\hlwcx.dll
Size 42KB
SHA256 c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7
MD5 36e3fb5964d663272cf1169e1e1ca478
SHA1 58115e08b49505bcbbb5c88a28a86222ba18d5d4
SHA512 daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442
SSDEEP 768:t0inj1jJ5OeUMhBNSqHvMjjAipMkuG30sv2xEZkWldADAKPIp:t0ipV5uMhBt0jjAiusv22ZkWTOAKP8
TLSH
T1D813E19B6BEC7029FDD22BB4F4F66815EEB63F388CB2C70E114941AB1C3A9D51251706
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

luexf.exe

Path \??\c:\luexf.exe
Size 179KB
SHA256 a5e40f068c1d858a2c8286c168bf37b2b5de100ad07f38e84d7764b03df2f24d
MD5 bccccccee8899533ae6b7f57b2664fd3
SHA1 df5b4bb57dc64bc4db97828b88f5973003af33f4
SHA512 3b51a50732c4173e8a1c6cad38b78541ed359e79566e3918c6b8292e2e3d511370f346a12a33e537198b7f206adfe948034af3b91cb3c97673d3f15d6d99c403
SSDEEP 3072:DK4RNx6gb4RoIwZpx10ZENfrGSQ7sDU/ySkNAq80:Dl6exiZuKoDkySkNAy
TLSH
T18204BF8A5B76CADAF1112C74D29816F34292DC9DFB1453638388FF4FF832E919836165
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4180-6-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/4344-0-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/4344-2-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/5060-9-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/5060-11-0x0000000002370000-0x0000000002371000-memory.dmp

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memory/5060-10-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/5060-12-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/5060-13-0x0000000002370000-0x0000000002371000-memory.dmp

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