farfli | 92c9b20855a709dd6576b2d2b6f3836961c1e559ecf891c099b157012dbe0ff5

Analysis

max time kernel
149s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
10/11/2026, 01:40

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General

Target
2026-11-09_f5989663998624aedbed0f78905983f6_coinminer_elex_wannacry.exe
Size 406KB
Sample261110-b3qcmscb62
SHA256 92c9b20855a709dd6576b2d2b6f3836961c1e559ecf891c099b157012dbe0ff5
MD5 f5989663998624aedbed0f78905983f6
SHA1 d45a70d1739b11c9b4930bd488d499b4c1cebae6
SHA512 f0927a5aea515b1fcfa57e0ed73801ac7faf9758b30140c4d6ac6026f9eabaa226261b9b9a0b59aa7ea5dc92501e9382a84f925ca90b8645dd9e2e5ce7f8070d
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum4:zdE3sJd1fm/+yb3OYs84/JHd
TLSH
T16B94AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion 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
behavioral1/memory/5272-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/5272-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/5272-20-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/5272-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5272-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5272-20-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/4804-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/4804-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x001c000000023876-4.dat	UPX
behavioral1/files/0x0007000000024579-10.dat	UPX
behavioral1/memory/5272-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/5520-13-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/5272-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/5272-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/5272-20-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5520	aecoo.exe

Executes dropped EXE 2 IoCs

pid	Process
5520	aecoo.exe
5272	ezu.exe

Loads dropped DLL 1 IoCs

pid	Process
5272	ezu.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-1-5-21-2091445952-3649787497-104050984-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\hdexgb\\ezu.exe \"c:\\Program Files\\hdexgb\\ezuhd.dll\",Viewer"	ezu.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)	\??\p:	ezu.exe
File opened (read-only)	\??\q:	ezu.exe
File opened (read-only)	\??\x:	ezu.exe
File opened (read-only)	\??\y:	ezu.exe
File opened (read-only)	\??\h:	ezu.exe
File opened (read-only)	\??\o:	ezu.exe
File opened (read-only)	\??\r:	ezu.exe
File opened (read-only)	\??\u:	ezu.exe
File opened (read-only)	\??\a:	ezu.exe
File opened (read-only)	\??\i:	ezu.exe
File opened (read-only)	\??\j:	ezu.exe
File opened (read-only)	\??\t:	ezu.exe
File opened (read-only)	\??\v:	ezu.exe
File opened (read-only)	\??\w:	ezu.exe
File opened (read-only)	\??\b:	ezu.exe
File opened (read-only)	\??\k:	ezu.exe
File opened (read-only)	\??\m:	ezu.exe
File opened (read-only)	\??\n:	ezu.exe
File opened (read-only)	\??\s:	ezu.exe
File opened (read-only)	\??\z:	ezu.exe
File opened (read-only)	\??\e:	ezu.exe
File opened (read-only)	\??\g:	ezu.exe
File opened (read-only)	\??\l:	ezu.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	ezu.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\hdexgb	aecoo.exe
File created	\??\c:\Program Files\hdexgb\ezuhd.dll	aecoo.exe
File created	\??\c:\Program Files\hdexgb\ezu.exe	aecoo.exe
File opened for modification	\??\c:\Program Files\hdexgb\ezu.exe	aecoo.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
1208	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	2026-11-09_f5989663998624aedbed0f78905983f6_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	aecoo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ezu.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
1208	cmd.exe
2436	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	ezu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ezu.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2436	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5272	ezu.exe
5272	ezu.exe
5272	ezu.exe
5272	ezu.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5272	ezu.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4804	2026-11-09_f5989663998624aedbed0f78905983f6_coinminer_elex_wannacry.exe
5520	aecoo.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4804 wrote to memory of 1208	4804	2026-11-09_f5989663998624aedbed0f78905983f6_coinminer_elex_wannacry.exe	89
PID 1208 wrote to memory of 2436	1208	cmd.exe	91
PID 1208 wrote to memory of 5520	1208	cmd.exe	92
PID 5520 wrote to memory of 5272	5520	aecoo.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-11-09_f5989663998624aedbed0f78905983f6_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-09_f5989663998624aedbed0f78905983f6_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4804
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\aecoo.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-09_f5989663998624aedbed0f78905983f6_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:1208
- - 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:2436
- - C:\Users\Admin\AppData\Local\Temp\aecoo.exe
    C:\Users\Admin\AppData\Local\Temp\\aecoo.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-09_f5989663998624aedbed0f78905983f6_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:5520
  - - \??\c:\Program Files\hdexgb\ezu.exe
      "c:\Program Files\hdexgb\ezu.exe" "c:\Program Files\hdexgb\ezuhd.dll",Viewer C:\Users\Admin\AppData\Local\Temp\aecoo.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:5272

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

Indicator Removal

T1070

File Deletion

T1070.004

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

ezu.exe

Path C:\Program Files\hdexgb\ezu.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

aecoo.exe

Path C:\Users\Admin\AppData\Local\Temp\aecoo.exe
Size 406KB
SHA256 6542f712c4c216aa5caaec349f4f210cf0ac5179f1dfe0dd2d534d24a8cef14e
MD5 a2763e103316bfd3da9596d92256df4b
SHA1 fb6e5adc6068bc82eb4e2bad50ef0ac01b31e4e3
SHA512 d49143e4ea9e999431651c04a5ae04e9855accd181e784ebdc45b97edb2cc08098d09d1b5b6517949c5b729779643967b13cf13246fc66b54e70df7762ad3e83
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum4p:zdE3sJd1fm/+yb3OYs84/JHdp
TLSH
T1A294AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ezuhd.dll

Path \??\c:\Program Files\hdexgb\ezuhd.dll
Size 89KB
SHA256 4e480632334a852d60abb4a921c36739ec44d107d6d17eb88a8c34a59b3a7000
MD5 917f637dcf69d975d517090b6d565905
SHA1 f226662fc4a6b36cb0bee5f589b3ef468c66d4b2
SHA512 419384db31c1c739497bf4ab014f838960b52f917625d971da99721c17c2e75e60be727034e1a46da83d8b95f226707725d538963eee5bef9857c79073fbee2b
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGN:M1uF6Feu2NlQOBcGN
TLSH
T1BD9302C41669CD8BCCD87072327FAA4EE631C48CB941ACB34A5E17A71A36AF3D01A705
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4804-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/4804-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/5272-14-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/5272-15-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/5272-17-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/5272-20-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/5520-13-0x0000000000400000-0x0000000000471000-memory.dmp

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