farfli | ecbc68f4d8979f8790244ccdfb241e080dd7e6d22d746212f42aa2f2587e8f5d

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
04/11/2026, 04:33

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General

Target
2026-11-03_e700615abdd03af2b129b73cb4e87231_elex_wannacry.exe
Size 151KB
Sample261104-e61vbshx6m
SHA256 ecbc68f4d8979f8790244ccdfb241e080dd7e6d22d746212f42aa2f2587e8f5d
MD5 e700615abdd03af2b129b73cb4e87231
SHA1 770a4bd9fc7641c1e3378a5c99d439a9c430e3bd
SHA512 544a5f0118fdc7697e5ebf7b30f4a1b5c49cf7089133147fb14abf262d39088b8defc74a26341aa04cf080f61cf18cb2471e0b3b89fb9d329fa6faf3514fd19b
SSDEEP 3072:KK4RNx65b4RoIwZpx10ZENfrGSQ7sDU/ySkNAq:Kl65xiZuKoDkySkNA
TLSH
T157E3DFCE1B7ACEDBD2201C75D0B456F792669CD9DA2147974381FD9EB432CC1AC3222A
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 2 IoCs

resource	yara_rule
behavioral1/memory/1644-12-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral1/memory/1644-13-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/1644-12-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1644-13-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 3 IoCs

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

flow	pid	Process
11	1644	rundll32.exe
12	1644	rundll32.exe
19	1644	rundll32.exe

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5796	aufzqbn.exe

Executes dropped EXE 1 IoCs

pid	Process
5796	aufzqbn.exe

Loads dropped DLL 1 IoCs

pid	Process
1644	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-1-5-21-2091445952-3649787497-104050984-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\neiafw\\pvido.dll\",init"	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)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	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
5036	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	rundll32.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	2026-11-03_e700615abdd03af2b129b73cb4e87231_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	aufzqbn.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
5036	cmd.exe
2396	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
2396	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1644	rundll32.exe
1644	rundll32.exe
1644	rundll32.exe
1644	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1644	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1864	2026-11-03_e700615abdd03af2b129b73cb4e87231_elex_wannacry.exe
5796	aufzqbn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 5036	1864	2026-11-03_e700615abdd03af2b129b73cb4e87231_elex_wannacry.exe	86
PID 5036 wrote to memory of 2396	5036	cmd.exe	88
PID 5036 wrote to memory of 5796	5036	cmd.exe	89
PID 5796 wrote to memory of 1644	5796	aufzqbn.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-11-03_e700615abdd03af2b129b73cb4e87231_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-03_e700615abdd03af2b129b73cb4e87231_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\aufzqbn.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-03_e700615abdd03af2b129b73cb4e87231_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:5036
- - 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:2396
- - \??\c:\aufzqbn.exe
    c:\aufzqbn.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-03_e700615abdd03af2b129b73cb4e87231_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5796
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\neiafw\pvido.dll",init c:\aufzqbn.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)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1644

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

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Downloads

aufzqbn.exe

Path C:\aufzqbn.exe
Size 151KB
SHA256 81068d947d536d6f3231e5cb4e875633a453bc63a4b5e18b111a6e1e9b54ea49
MD5 4da8582c7e236e6590195b6290476c59
SHA1 a438ef80489351b9ef75d6b363f5493f75b86e0e
SHA512 8eeccac76351953751dd1a4d7fa21890bc064934ef559f6ca26fda5881fc307a69e059bcce753c1ef51f4b6e63fac14c018962c1ec8aa1a5caf5188ee2deda0e
SSDEEP 3072:KK4RNx65b4RoIwZpx10ZENfrGSQ7sDU/ySkNAq+:Kl65xiZuKoDkySkNAf
TLSH
T1F0E3DFCE1B7ACEDBE2201C75D0B416F792569CD9DA2157A74381FD9EB432CC1AC3212A
MD5 SHA1 SHA512 SSDEEP TLSH

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pvido.dll

Path \??\c:\neiafw\pvido.dll
Size 42KB
SHA256 c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7
MD5 36e3fb5964d663272cf1169e1e1ca478
SHA1 58115e08b49505bcbbb5c88a28a86222ba18d5d4
SHA512 daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442
SSDEEP 768:t0inj1jJ5OeUMhBNSqHvMjjAipMkuG30sv2xEZkWldADAKPIp:t0ipV5uMhBt0jjAiusv22ZkWTOAKP8
TLSH
T1D813E19B6BEC7029FDD22BB4F4F66815EEB63F388CB2C70E114941AB1C3A9D51251706
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1644-10-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/1644-11-0x0000000002070000-0x0000000002071000-memory.dmp

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memory/1644-12-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/1644-13-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/1644-14-0x0000000002070000-0x0000000002071000-memory.dmp

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memory/1864-0-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1864-2-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/5796-7-0x0000000000400000-0x0000000000426000-memory.dmp

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