farfli | 6507fb5e7c5c6948286698b4202769e14d5d7ebfa06dec865e391e65d900d5f2

Analysis

max time kernel
150s
max time network
143s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/08/2026, 07:05

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General

Target
2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe
Size 402KB
Sample260809-hwqhdssgrf
SHA256 6507fb5e7c5c6948286698b4202769e14d5d7ebfa06dec865e391e65d900d5f2
MD5 07993dcf8f61cba42c70f674677be084
SHA1 8f457bb9c6b2c11736bf5f582fad7274e005e196
SHA512 d89e00fba8067bd44b1a85e6d991a8d7001f83dd66aa256246b054b99d6be7225f6e07b55b3a68d87fa419981e90e3ffcbed45c7983bd6cff6fd2af319d0930b
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T13994AF01E78351D6DE8225B081FA7377B3789A4D0F12C7E3BB68EE2E6E211D1953B119
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 4 IoCs

resource	yara_rule
behavioral2/memory/248-10-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/248-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/248-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/248-16-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/248-10-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/248-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/248-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/248-16-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/4260-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/4260-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000a000000011371-3.dat	UPX
behavioral2/memory/5496-7-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000d00000001c5ee-8.dat	UPX
behavioral2/memory/248-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/248-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/248-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/248-16-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
5496	jkyys.exe

Executes dropped EXE 2 IoCs

pid	Process
5496	jkyys.exe
248	wucxrqz.exe

Loads dropped DLL 1 IoCs

pid	Process
248	wucxrqz.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-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\vdvxnqgpu\\wucxrqz.exe \"c:\\Program Files\\vdvxnqgpu\\wucxrqz.dll\",Viewer"	wucxrqz.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)	\??\m:	wucxrqz.exe
File opened (read-only)	\??\o:	wucxrqz.exe
File opened (read-only)	\??\u:	wucxrqz.exe
File opened (read-only)	\??\v:	wucxrqz.exe
File opened (read-only)	\??\w:	wucxrqz.exe
File opened (read-only)	\??\z:	wucxrqz.exe
File opened (read-only)	\??\k:	wucxrqz.exe
File opened (read-only)	\??\r:	wucxrqz.exe
File opened (read-only)	\??\t:	wucxrqz.exe
File opened (read-only)	\??\y:	wucxrqz.exe
File opened (read-only)	\??\d:	wucxrqz.exe
File opened (read-only)	\??\i:	wucxrqz.exe
File opened (read-only)	\??\n:	wucxrqz.exe
File opened (read-only)	\??\p:	wucxrqz.exe
File opened (read-only)	\??\q:	wucxrqz.exe
File opened (read-only)	\??\s:	wucxrqz.exe
File opened (read-only)	\??\a:	wucxrqz.exe
File opened (read-only)	\??\g:	wucxrqz.exe
File opened (read-only)	\??\j:	wucxrqz.exe
File opened (read-only)	\??\l:	wucxrqz.exe
File opened (read-only)	\??\x:	wucxrqz.exe
File opened (read-only)	\??\b:	wucxrqz.exe
File opened (read-only)	\??\h:	wucxrqz.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	wucxrqz.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\vdvxnqgpu\wucxrqz.exe	jkyys.exe
File opened for modification	\??\c:\Program Files\vdvxnqgpu	jkyys.exe
File created	\??\c:\Program Files\vdvxnqgpu\wucxrqz.dll	jkyys.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
1236	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	2026-08-09_07993dcf8f61cba42c70f674677be084_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jkyys.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wucxrqz.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
1236	cmd.exe
1348	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	wucxrqz.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	wucxrqz.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1348	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
248	wucxrqz.exe
248	wucxrqz.exe
248	wucxrqz.exe
248	wucxrqz.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	248	wucxrqz.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4260	2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe
5496	jkyys.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 1236	4260	2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe	89
PID 1236 wrote to memory of 1348	1236	cmd.exe	91
PID 1236 wrote to memory of 5496	1236	cmd.exe	92
PID 5496 wrote to memory of 248	5496	jkyys.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\jkyys.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_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:1236
- - 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:1348
- - C:\Users\Admin\AppData\Local\Temp\jkyys.exe
    C:\Users\Admin\AppData\Local\Temp\\jkyys.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_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:5496
  - - \??\c:\Program Files\vdvxnqgpu\wucxrqz.exe
      "c:\Program Files\vdvxnqgpu\wucxrqz.exe" "c:\Program Files\vdvxnqgpu\wucxrqz.dll",Viewer C:\Users\Admin\AppData\Local\Temp\jkyys.exe
      4⤵
      Executes dropped EXE
      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:248

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

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Downloads

wucxrqz.exe

Path C:\Program Files\vdvxnqgpu\wucxrqz.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

jkyys.exe

Path C:\Users\Admin\AppData\Local\Temp\jkyys.exe
Size 403KB
SHA256 ee76daaab902d3bf718d2cef12ddc8e5d91ca22ac0d295cfed1686d474f8d645
MD5 f6b81cd061d992468ea6d1a599bc1379
SHA1 cb07a3d885e0e1778558ddecc9c70d02e1f1c54d
SHA512 cc3d84d3789958aad027ed015c47cfd0146c3f1561731783598312b2c73b59553e34472fab8b6636ac28d7fb0e3f62dd7b91d6174426d24506549cd1ee035d88
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T1A794AF01E78351D6DE8225B081FA7377B3789A4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

wucxrqz.dll

Path \??\c:\Program Files\vdvxnqgpu\wucxrqz.dll
Size 89KB
SHA256 f4a7234919d9161e4af3c836513fcc7201396dc1255017a038e0a873f711a4c8
MD5 eaea1c4d100984fbf4a7df770eb635cb
SHA1 2996e8754d5ef11168f3993248242a8883083534
SHA512 e385d96d834e86afc315c7154581bfeaaffb202803546d5ca612bdbfcf0f7e39165be899b2ce5350d3f6f6c28590168a33182df762be0e8fc5c8d30d3b082bf5
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGeR:M1uF6Feu2NlQOBcGeR
TLSH
T1E19302C45665CD8BCCD87072727FAA4EE631D48CB981ACB34A5E12A31A36AF3D01A745
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/248-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/248-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/248-13-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/248-16-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/4260-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/4260-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/5496-7-0x0000000000400000-0x0000000000471000-memory.dmp

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