farfli | 53b69c4f831facacebf046685608e353b0ffe8b78e29b2717274bda1cc0ac092

Analysis

max time kernel
150s
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
25/08/2026, 13:32

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General

Target
2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_elex_wannacry.exe
Size 94KB
Sample260825-qs6zzashmc
SHA256 53b69c4f831facacebf046685608e353b0ffe8b78e29b2717274bda1cc0ac092
MD5 4fe828b13c055dc1ccd19b3aef8616be
SHA1 028327b68a48e8c4ffb6b2473e0bd360c36d5a67
SHA512 2d0c346482bc7a01558e80c9b48671b155067ec8cad1ebcd2b6b7b5ddc5cc847c7d78797d5c3b7ce8a291be221cb6dd25d7e57855e3d6241dd43f173593b6a87
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlB:eSABNx6vb4RoI4pyjHYLhal01UoPX+h0
TLSH
T12293BF07ABA588C9F1217C30566D373187BFA85E3F1457A79348EE4E9437D80EC3628A
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 3 IoCs

resource	yara_rule
behavioral2/memory/5684-10-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/5684-11-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/5684-12-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 1 IoCs

resource	yara_rule
behavioral2/memory/5684-11-0x0000000010000000-0x0000000010032000-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
5	5684	rundll32.exe
6	5684	rundll32.exe
7	5684	rundll32.exe
12	5684	rundll32.exe
13	5684	rundll32.exe
15	5684	rundll32.exe
17	5684	rundll32.exe
21	5684	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d00000001c627-7.dat	acprotect

Deletes itself 1 IoCs

pid	Process
2236	gusjvl.exe

Executes dropped EXE 1 IoCs

pid	Process
2236	gusjvl.exe

Loads dropped DLL 1 IoCs

pid	Process
5684	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-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ivlzi\\ecwah.dll\",DoVirusScan"	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)	\??\l:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	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
1572	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	2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_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	gusjvl.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
1572	cmd.exe
2924	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
2924	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5684	rundll32.exe
5684	rundll32.exe
5684	rundll32.exe
5684	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5684	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2600	2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_elex_wannacry.exe
2236	gusjvl.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 1572	2600	2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_elex_wannacry.exe	90
PID 1572 wrote to memory of 2924	1572	cmd.exe	92
PID 1572 wrote to memory of 2236	1572	cmd.exe	93
PID 2236 wrote to memory of 5684	2236	gusjvl.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\gusjvl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_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:1572
- - 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:2924
- - \??\c:\gusjvl.exe
    c:\gusjvl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_4fe828b13c055dc1ccd19b3aef8616be_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2236
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ivlzi\ecwah.dll",DoVirusScan c:\gusjvl.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:5684

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

gusjvl.exe

Path \??\c:\gusjvl.exe
Size 95KB
SHA256 fa25708edfb99711cd5a4a9687eeb1302162b3e926c234695508cb1a7b516cef
MD5 ed737f9f80a0a763248b8050800add6e
SHA1 d3e6356a5fadd7f1aaf3cca041ace0568a3ed80b
SHA512 8721c15542525ff4cc838042cadbbf3e5f856338004c34423fee2e95d8aa83f3ee8b233d68d49b67f9c15c014c5cf0ff73a9573252c16b355ac1de10cc3f5603
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzl5:eSABNx6vb4RoI4pyjHYLhal01UoPX+hs
TLSH
T19B93AE07ABA589C9F1217C30566D3B3187BF985D3F1457679348EE4EA437D80EC3628A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ecwah.dll

Path \??\c:\ivlzi\ecwah.dll
Size 50KB
SHA256 b2d21c40c5bfc0f7695945946fa1cdd4eaf2f66a8391ddde6307c5f765fbf525
MD5 cbfc06794d16ace6adf42210183fc1b9
SHA1 74fc68a2af225b0aca954b3684940747511013c5
SHA512 181dbe8b63e28a81cb8e0b7240df8745da350e1ab433b157b8b4fd36aa10f0782e807c09563bcffe37cfe64aa1b514b2cc1f179fbcba422d96867179d88e13c9
SSDEEP 768:Z+arYIR3u5v4bGwCl56LNQQe5JBtGf1oTYtx/qQvorLOpqPJ/UP2Gy+OIudD05:ZPrG57TzDxJS6Etx/Zv2OwSy+OIOD05
TLSH
T15733F1ACE2F064F5D0AF6B345952225CF5C26F238D3190DB4A8214BF3C32A5B5B5E721
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2236-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2600-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2600-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5684-9-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/5684-10-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/5684-11-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/5684-12-0x0000000010001000-0x0000000010021000-memory.dmp

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