farfli | abf2550fa68505d60cd4be1c2e2ab7738de040bb1fb2ed29ef5271afdd2dc172

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
04/08/2026, 06:33

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General

Target
2026-08-04_832a64edd5530b839918ebf99ce40c56_elex_wannacry.exe
Size 112KB
Sample260804-hbbthaxzhy
SHA256 abf2550fa68505d60cd4be1c2e2ab7738de040bb1fb2ed29ef5271afdd2dc172
MD5 832a64edd5530b839918ebf99ce40c56
SHA1 8e754fb2c08fe8a44b84d25c395468ef19e23050
SHA512 69bdebc472c594fb2012935e7c57c57ebb345f8522303fd114b0da919ea539c79bc0fd46c4f72be0129779e2cebaac9922ed88c540b827ff144cf18f697bf2a7
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmyyFY:ELRrO10TiJD9yjqrilyxOWPyO
TLSH
T138B3AD5D6D62C49EE4015B7043579721A6A2AC5DFA304F334380BA4EFF36E0BEDE9198
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/5012-12-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/5012-15-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/5012-16-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/5012-12-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5012-15-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5012-16-0x0000000010000000-0x0000000010023000-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
4	5012	rundll32.exe
5	5012	rundll32.exe
6	5012	rundll32.exe
24	5012	rundll32.exe
40	5012	rundll32.exe
47	5012	rundll32.exe
56	5012	rundll32.exe
71	5012	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4620	fovwx.exe

Executes dropped EXE 1 IoCs

pid	Process
4620	fovwx.exe

Loads dropped DLL 1 IoCs

pid	Process
5012	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-1-5-21-540052884-2969440504-464782435-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\mziwplty\\ducow.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)	\??\l:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\i:	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
536	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-04_832a64edd5530b839918ebf99ce40c56_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	fovwx.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
536	cmd.exe
2236	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
2236	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5012	rundll32.exe
5012	rundll32.exe
5012	rundll32.exe
5012	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3980	2026-08-04_832a64edd5530b839918ebf99ce40c56_elex_wannacry.exe
4620	fovwx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 536	3980	2026-08-04_832a64edd5530b839918ebf99ce40c56_elex_wannacry.exe	83
PID 536 wrote to memory of 2236	536	cmd.exe	85
PID 536 wrote to memory of 4620	536	cmd.exe	86
PID 4620 wrote to memory of 5012	4620	fovwx.exe	87

C:\Users\Admin\AppData\Local\Temp\2026-08-04_832a64edd5530b839918ebf99ce40c56_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-04_832a64edd5530b839918ebf99ce40c56_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fovwx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_832a64edd5530b839918ebf99ce40c56_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:536
- - 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:2236
- - C:\Users\Admin\AppData\Local\Temp\fovwx.exe
    C:\Users\Admin\AppData\Local\Temp\\fovwx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_832a64edd5530b839918ebf99ce40c56_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4620
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\mziwplty\ducow.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\fovwx.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:5012

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

fovwx.exe

Path C:\Users\Admin\AppData\Local\Temp\fovwx.exe
Size 112KB
SHA256 d5b3afbd5577272606ddc8d4dadf707b8eb069333d4323ef5247471f17b4a7e9
MD5 77fbf9c6588b1ca13b3c4092f7e9a3c5
SHA1 a043372c80de77228a4428e04e507db17e831f64
SHA512 6544b4084ce4d04668de5d48542e950227ed99d84160a2dec555321c68051ac9c56cb444dacaf36ba7b43d4927f3e3847378f6e1de815a177865a2cf382a3c7f
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmyyFv:ELRrO10TiJD9yjqrilyxOWPyp
TLSH
T1F6B3AD5D6D62C49EE4015B7043579721A6A2AC5DFA304F334380BA4EFF36E0BEDE9198
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ducow.dll

Path \??\c:\mziwplty\ducow.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/3980-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3980-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4620-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5012-10-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/5012-11-0x0000000000BE0000-0x0000000000BE2000-memory.dmp

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memory/5012-13-0x0000000000BE0000-0x0000000000BE2000-memory.dmp

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memory/5012-12-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/5012-15-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/5012-16-0x0000000010000000-0x0000000010023000-memory.dmp

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