farfli | 183958c70c2e3fe4d09dba6554ac0bd10bd436f24bd5a1f5ea1cbfb16c7628f9

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
29/06/2026, 21:09

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General

Target
2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_elex_wannacry.exe
Size 585KB
Sample260629-zznlmsgv7r
SHA256 183958c70c2e3fe4d09dba6554ac0bd10bd436f24bd5a1f5ea1cbfb16c7628f9
MD5 8cded17ee170e925e4c36df5fc42e9b8
SHA1 11a9fc370317aeae92ba935c45f5b9fe8a62f6e9
SHA512 855c8ac273a7e4e3b603896ad81246fc2ff345dd37dba5df7965d00d13816c67a24cc5bce5ced5763a537c08130e888151557120b5b1149f0f6758cfdd509a9f
SSDEEP 6144:WAMejnmtYZnAmGJ/8uADNFlbF/joovD6fkjOmfPWq6da0npNu:HMimtuAmGJ/85BbFb976s3Wq6d7npU
TLSH
T1D1D41242F592887AC43CDB34D75B8B35A3E359707A064262838DAC9FADB9F0787053D8
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery 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/4916-11-0x0000000010000000-0x0000000010090000-memory.dmp	family_farfli
behavioral1/memory/4916-13-0x0000000010000000-0x0000000010090000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/4916-11-0x0000000010000000-0x0000000010090000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4916-13-0x0000000010000000-0x0000000010090000-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
3	4916	rundll32.exe
15	4916	rundll32.exe
16	4916	rundll32.exe
17	4916	rundll32.exe
33	4916	rundll32.exe
35	4916	rundll32.exe
42	4916	rundll32.exe
52	4916	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2692	uyuxz.exe

Executes dropped EXE 1 IoCs

pid	Process
2692	uyuxz.exe

Loads dropped DLL 1 IoCs

pid	Process
4916	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-1-5-21-204488895-2999877624-296153668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Meture = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\vjgjk\\agyiic.dll\",Decompress"	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)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\l:	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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4916	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vjgjk	uyuxz.exe
File created	\??\c:\Program Files\vjgjk\agyiic.dll	uyuxz.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_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	uyuxz.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
3264	PING.EXE
724	cmd.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
3264	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe
4916	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4124	2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_elex_wannacry.exe
2692	uyuxz.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4124 wrote to memory of 724	4124	2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_elex_wannacry.exe	88
PID 724 wrote to memory of 3264	724	cmd.exe	90
PID 724 wrote to memory of 2692	724	cmd.exe	91
PID 2692 wrote to memory of 4916	2692	uyuxz.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4124
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\uyuxz.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:724
- - 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:3264
- - C:\Users\Admin\AppData\Local\Temp\uyuxz.exe
    C:\Users\Admin\AppData\Local\Temp\\uyuxz.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-25_8cded17ee170e925e4c36df5fc42e9b8_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:2692
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\vjgjk\agyiic.dll",Decompress C:\Users\Admin\AppData\Local\Temp\uyuxz.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)
      Suspicious use of NtSetInformationThreadHideFromDebugger
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4916

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

uyuxz.exe

Path C:\Users\Admin\AppData\Local\Temp\uyuxz.exe
Size 585KB
SHA256 361610b61f2dc24ccfce143ad5fe7553be73fec7e6b115921a1b026bf9d8fafc
MD5 3b9f169cb4a18bbff75db8b2354da45e
SHA1 6b10ac274804811c8da63921fb78db302f5e1016
SHA512 905dcc90928b486f9d119922cf0ab686e0c3996ac6556b2994cfecbd57c0c80c01d27560ce53257857fe79bad107a83c2467e4a93e7a2ac1cd17ebb447c0dc0b
SSDEEP 6144:WAMejnmtYZnAmGJ/8uADNFlbF/joovD6fkjOmfPWq6da0npNuo:HMimtuAmGJ/85BbFb976s3Wq6d7npUo
TLSH
T1B1D41242F592887AC43CDB34D75B8B35A3E359707A064262838DAC9FADB9F0787053D8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

agyiic.dll

Path \??\c:\Program Files\vjgjk\agyiic.dll
Size 266KB
SHA256 e686a95ff2ef6260696f9f4615c643e9c13a589a52a42b6364e79bd2053d30fc
MD5 ac9a73865dead996e2220c2afa364305
SHA1 15e3651044ff8229daf1667201d4ed36ccd3daee
SHA512 6c4aeeeb7bb2b0fdbdb878a4aeaabd1390fab8f9df38f1afb4134c46d39369442a5678cff9ea454e11c65c4934d99695f05d3993cfff9f4de49cdf583d0564ad
SSDEEP 6144:/hJkmMlGAzciA4nhT5ai7Ohk/0BFen/xmt:/hJEQloHOXM4t
TLSH
T13D4423915B3E34B3FC5F2B327A77E56FFB7422342862899FC78F422165A36601019792
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2692-7-0x0000000000400000-0x0000000000494000-memory.dmp

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memory/4124-0-0x0000000000400000-0x0000000000494000-memory.dmp

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memory/4124-2-0x0000000000400000-0x0000000000494000-memory.dmp

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memory/4916-10-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/4916-11-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/4916-13-0x0000000010000000-0x0000000010090000-memory.dmp

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