farfli | 87062ee598f956faebb36d0e870924fa230a2968cbcf71709c6ed5f46b283560

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/08/2026, 05:58

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General

Target
2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_elex_wannacry.exe
Size 97KB
Sample260802-gn5rnsdq2s
SHA256 87062ee598f956faebb36d0e870924fa230a2968cbcf71709c6ed5f46b283560
MD5 8302cf63c695550a9b6f7f8e9b16f178
SHA1 672bb687360a835980d75f36335e58d2283820d5
SHA512 79f9c0de7a7da3dbadf4e09012bb62099f6b0495eeb516655c29a09bd0139e859b1e734f473c1a6965949092ad7b8c71645565f883f02de31e2a5f1e27094b60
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmyS:ELRrO10TiJD9yjqrilyxOWPS
TLSH
T156A3BE5D7D8288AFD0048B7107539726A6B36C6AF9314F374350BA6DAF36807EDD928C
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
behavioral1/memory/3464-12-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/3464-15-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/3464-18-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/3464-12-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3464-15-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3464-18-0x0000000010000000-0x0000000010023000-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
6	3464	rundll32.exe
7	3464	rundll32.exe
8	3464	rundll32.exe
20	3464	rundll32.exe
32	3464	rundll32.exe
46	3464	rundll32.exe
60	3464	rundll32.exe
61	3464	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5104	vgoyq.exe

Executes dropped EXE 1 IoCs

pid	Process
5104	vgoyq.exe

Loads dropped DLL 1 IoCs

pid	Process
3464	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-1-5-21-2937465464-4167303362-2236413517-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\vvfcs\\lcsie.dll\",QueryPluginInterface"	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)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	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)	\??\w:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	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
2532	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	2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_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	vgoyq.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
2532	cmd.exe
1984	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
1984	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3464	rundll32.exe
3464	rundll32.exe
3464	rundll32.exe
3464	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3464	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1768	2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_elex_wannacry.exe
5104	vgoyq.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 2532	1768	2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_elex_wannacry.exe	85
PID 2532 wrote to memory of 1984	2532	cmd.exe	87
PID 2532 wrote to memory of 5104	2532	cmd.exe	88
PID 5104 wrote to memory of 3464	5104	vgoyq.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vgoyq.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_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:2532
- - 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:1984
- - C:\Users\Admin\AppData\Local\Temp\vgoyq.exe
    C:\Users\Admin\AppData\Local\Temp\\vgoyq.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-02_8302cf63c695550a9b6f7f8e9b16f178_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5104
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\vvfcs\lcsie.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\vgoyq.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:3464

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

vgoyq.exe

Path C:\Users\Admin\AppData\Local\Temp\vgoyq.exe
Size 98KB
SHA256 823d885bf15cebf6cb133770654430aaf820155d7fcc6e85d5be11d93a5e543c
MD5 5328500e3a0c95f3a405714b07a0e878
SHA1 d60a10577ee7aad770873cd8857316e7e088f0ca
SHA512 f2019fca3c45f8c7acac9868e568a5eab2a7f6966b6d5b4049db892d75fb272586e38852e2a24e7693d839cca8c58bd722fb565f9360cf8fb157273741095cb5
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmyR:ELRrO10TiJD9yjqrilyxOWPR
TLSH
T1AAA3BE5D7D82889FE0058B7107539726A6B36C69FA314F374340BA5EAF36807EDD928C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

lcsie.dll

Path \??\c:\vvfcs\lcsie.dll
Size 44KB
SHA256 9111c1eb1f0b59dcd49cfd5a0abc0ba100ac59a3bcae8623ff091dfdc46fed3c
MD5 0f12a7d509b2c9bb9b4cd6d8a0325e86
SHA1 f5fb59ad4f0633d115b06f35a2dc161dc4367157
SHA512 e3c84a643ff0a2627daba8a056221985a472aaf07bade61b3e9459db4bfc8792c1347606911e3fcc01581508004b18b5435bcccd5e7617cc6d091f37a5f42e7f
SSDEEP 768:DICzePjle2367kjhrXLdCuYMW8QVnwrLDGe/brbtJyOTuXfADVjeJ2i/MVJWAE:DDePjA23Ukjh37YMonwrvGybrbbRCf4E
TLSH
T1FD23F1A7B94E8D4FC0AE41F7078FC8D422B5589A97A7CB4626008F216CC4FB07E52376
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1768-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1768-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3464-10-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3464-11-0x0000000000E00000-0x0000000000E02000-memory.dmp

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memory/3464-12-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3464-13-0x0000000000E00000-0x0000000000E02000-memory.dmp

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memory/3464-15-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3464-18-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/5104-7-0x0000000000400000-0x0000000000417000-memory.dmp

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