farfli | 4f182087d109cbe0cb7930d8dfec8b60ada47d45eb3b92f88d2434264bfeda90

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
16/09/2026, 23:07

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-09-16_2762e70039e76d9b8eb75a43e45accc0_elex_wannacry.exe
Size 389KB
Sample260916-24dckswfpe
SHA256 4f182087d109cbe0cb7930d8dfec8b60ada47d45eb3b92f88d2434264bfeda90
MD5 2762e70039e76d9b8eb75a43e45accc0
SHA1 0c70469a19fb03f3f9150ccec0546b1ff2c131c0
SHA512 78d0d3ca4988eac56c651ae644656918e3d8a12a4003eef612390fbed4e9a08be6946daef120470ea328f00d6e1a05f29a954a8d74c0ee21829a72f789e06565
SSDEEP 6144:54yA9i7ZanCjRDWqCEdK40LUT4AxFa7abls3ol:i7i1TjRDdZdVT4AxFauba3G
TLSH
T16E848AC057F9C205F2BE2F75DAB9B6F44A29BD55EE34E58B12843C1DB870A91D830326
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
behavioral1/memory/312-12-0x0000000010000000-0x0000000010054000-memory.dmp	family_farfli
behavioral1/memory/312-14-0x0000000010000000-0x0000000010054000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/312-12-0x0000000010000000-0x0000000010054000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/312-14-0x0000000010000000-0x0000000010054000-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
14	312	rundll32.exe
18	312	rundll32.exe
19	312	rundll32.exe
20	312	rundll32.exe
33	312	rundll32.exe
34	312	rundll32.exe
42	312	rundll32.exe
45	312	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4972	uxype.exe

Executes dropped EXE 1 IoCs

pid	Process
4972	uxype.exe

Loads dropped DLL 1 IoCs

pid	Process
312	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-1-5-21-895009113-1202185046-1686627690-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HDTunePro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\gyros\\kregyrpfj.dll\",GetCpu"	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	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\gyros	uxype.exe
File created	\??\c:\Program Files\gyros\kregyrpfj.dll	uxype.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
1196	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uxype.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-16_2762e70039e76d9b8eb75a43e45accc0_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
1196	cmd.exe
4988	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
4988	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
312	rundll32.exe
312	rundll32.exe
312	rundll32.exe
312	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	312	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2800	2026-09-16_2762e70039e76d9b8eb75a43e45accc0_elex_wannacry.exe
4972	uxype.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 1196	2800	2026-09-16_2762e70039e76d9b8eb75a43e45accc0_elex_wannacry.exe	90
PID 1196 wrote to memory of 4988	1196	cmd.exe	92
PID 1196 wrote to memory of 4972	1196	cmd.exe	93
PID 4972 wrote to memory of 312	4972	uxype.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-09-16_2762e70039e76d9b8eb75a43e45accc0_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-16_2762e70039e76d9b8eb75a43e45accc0_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\uxype.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-16_2762e70039e76d9b8eb75a43e45accc0_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:1196
- - 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:4988
- - C:\Users\Admin\AppData\Local\Temp\uxype.exe
    C:\Users\Admin\AppData\Local\Temp\\uxype.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-16_2762e70039e76d9b8eb75a43e45accc0_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:4972
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\gyros\kregyrpfj.dll",GetCpu C:\Users\Admin\AppData\Local\Temp\uxype.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:312

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

uxype.exe

Path C:\Users\Admin\AppData\Local\Temp\uxype.exe
Size 390KB
SHA256 a680946ec2253d623123376d5340eaeeb9e296f26e12bc0a969cd867f1eb8f27
MD5 e9f827c059a263be3c709116978d8189
SHA1 bbd0ec5d6873ad5e7e3eb7d074f1ae150585d840
SHA512 73c765e0f9c952dd1719b1ed9451cc1b0924762f7ffbff49d7059fdac1ad24f399aec8b15f018df17968ce109f12a5d7393e874e57a855e182f4aa3c16eecf21
SSDEEP 6144:54yA9i7ZanCjRDWqCEdK40LUT4AxFa7abls3oK:i7i1TjRDdZdVT4AxFauba3n
TLSH
T1C7848AC057F9C205F2BE2F75DAB9B6F44A29BD55EE34E64B12843C1DB870A91D830326
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

kregyrpfj.dll

Path \??\c:\Program Files\gyros\kregyrpfj.dll
Size 144KB
SHA256 6637f69197525ba2929f0077ef92c8b5babcb8e47437f4318f400ed1221df7e8
MD5 a7cc05c8ee1ecec7bd444dc5359d0891
SHA1 f8f0c8a6d74eae4459a5b4c1f8b3f9364e452452
SHA512 69061f35d62ee1286bde799d00a9f5411053e7410f01d0b97526e0c9e114f806ce854d14379b2bd92d7f282e24fe70752c389af0f50b0b30fbf57f3d153c1311
SSDEEP 3072:9FSwhKDdKtTZVdOEaoxVDYn10zGJP4eLhSco/fWoB7re9Z9Idl8v4qClISH:awhKDaZfFTxV8nXgesN/OpLcl8v4qwIA
TLSH
T145E302E2215AD2B3F4BE177D9C57050EF9BD14009BB98A5B57C0781A2C1AA36E83D373
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/312-10-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/312-11-0x000000001004E000-0x000000001004F000-memory.dmp

Download

memory/312-12-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/312-14-0x0000000010000000-0x0000000010054000-memory.dmp

Download

memory/2800-0-0x0000000000400000-0x0000000000461000-memory.dmp

Download

memory/2800-2-0x0000000000400000-0x0000000000461000-memory.dmp

Download

memory/4972-7-0x0000000000400000-0x0000000000461000-memory.dmp

Download