farfli | dafacae9066c7adcd47674a5e15b63ac17ad566ecf7ef3ad3f61787be9b79846

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
05/09/2026, 04:37

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-09-04_872a84962795497df1827393ba1f8e6b_coinminer_elex_wannacry.exe
Size 401KB
Sample260905-e8ygzstva1
SHA256 dafacae9066c7adcd47674a5e15b63ac17ad566ecf7ef3ad3f61787be9b79846
MD5 872a84962795497df1827393ba1f8e6b
SHA1 c2af85e62080dc3545c41a71db2d4131bb621b93
SHA512 36a8ec1ce27ea8984923c49ba3dd2efb32e50ba62facc25de605ae0b8c85f0bda925662af10227ec46bd7701466a98c536f47910c76e31a61162ead3a35a6386
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19SB:UGmTau+mMC4ITJE8dfSJ/F1Y
TLSH
T1AC94D02272D08BA3C1866432CDA6EA7CD3E5CD289C705E3773E9F65DDE36941423A274
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/3616-11-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/3616-9-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/3616-13-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/3616-11-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3616-9-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3616-13-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2816-0-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/memory/2816-2-0x0000000000400000-0x0000000000492000-memory.dmp	UPX
behavioral2/files/0x000700000001b858-3.dat	UPX
behavioral2/memory/3260-6-0x0000000000400000-0x0000000000492000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
4	3616	rundll32.exe
10	3616	rundll32.exe
11	3616	rundll32.exe
12	3616	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3260	dfzvazyzk.exe

Executes dropped EXE 1 IoCs

pid	Process
3260	dfzvazyzk.exe

Loads dropped DLL 1 IoCs

pid	Process
3616	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-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\mlikz\\leyel.dll\",InitEngine"	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)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\t:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\mlikz	dfzvazyzk.exe
File created	\??\c:\Program Files\mlikz\leyel.dll	dfzvazyzk.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
2692	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	2026-09-04_872a84962795497df1827393ba1f8e6b_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	dfzvazyzk.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
2692	cmd.exe
4212	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4212	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3616	rundll32.exe
3616	rundll32.exe
3616	rundll32.exe
3616	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3616	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2816	2026-09-04_872a84962795497df1827393ba1f8e6b_coinminer_elex_wannacry.exe
3260	dfzvazyzk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 2692	2816	2026-09-04_872a84962795497df1827393ba1f8e6b_coinminer_elex_wannacry.exe	89
PID 2692 wrote to memory of 4212	2692	cmd.exe	91
PID 2692 wrote to memory of 3260	2692	cmd.exe	92
PID 3260 wrote to memory of 3616	3260	dfzvazyzk.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-09-04_872a84962795497df1827393ba1f8e6b_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-04_872a84962795497df1827393ba1f8e6b_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dfzvazyzk.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-04_872a84962795497df1827393ba1f8e6b_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:2692
- - 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:4212
- - C:\Users\Admin\AppData\Local\Temp\dfzvazyzk.exe
    C:\Users\Admin\AppData\Local\Temp\\dfzvazyzk.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-04_872a84962795497df1827393ba1f8e6b_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:3260
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\mlikz\leyel.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\dfzvazyzk.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:3616

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

dfzvazyzk.exe

Path C:\Users\Admin\AppData\Local\Temp\dfzvazyzk.exe
Size 402KB
SHA256 f0c746dfab33b30cb0714d2cdc4768182bdfab2964a5a88b7e553be7bb741011
MD5 3d91fe0ba1a479494177f69ad3ca07b2
SHA1 8bb8f4d691e5e95a72cfe47b43b1b39801280dc4
SHA512 7dd82d6693e44d035405b5f3eca3595021419e3e14af4e949ab870b6634b2ef41dddc77dfe1a6f3195d83a1ded3dbea73941b23fdf548144ed3d468f680d7596
SSDEEP 6144:qKgGmTBsuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F19S:UGmTau+mMC4ITJE8dfSJ/F1
TLSH
T14394D02272D08BA3C1866432CDA6EA7CD3E5CD289C705E3773E9F65DDE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

leyel.dll

Path \??\c:\Program Files\mlikz\leyel.dll
Size 176KB
SHA256 52156f49ae918794e9ac39057f1bd93a3ba390cc4bd5112e9b911ad9ac56cdd4
MD5 af3f638c8b93c3f52e8b2291e8dab395
SHA1 a62a62433434a5545aa3643208c505fafb5127eb
SHA512 49a14e4edce455e930516ef1553e8d521ea12b35b393e04013d1878a6da0a233d7d2b93fc61a665e95ce0c9b64481951e8a42fea5891973e02ab8100c77a79ac
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocw:1Jv2tOItshGYdMnYYVjasKbOWSFofw
TLSH
T1C6041261866D1C34D087B3717B05920DF6B452A490B9CBD3F7B8AF2B3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2816-0-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/2816-2-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/3260-6-0x0000000000400000-0x0000000000492000-memory.dmp

Download

memory/3616-12-0x000000001005A000-0x000000001005B000-memory.dmp

Download

memory/3616-11-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/3616-9-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/3616-13-0x0000000010000000-0x0000000010067000-memory.dmp

Download