farfli | b9640012869033326ac7b9dd9e4b77fc150a6e6d3cbede7d59424b770df207f2

Analysis

max time kernel
150s
max time network
148s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
02/06/2026, 16:13

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General

Target
2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe
Size 93KB
Sample260602-tphprah15s
SHA256 b9640012869033326ac7b9dd9e4b77fc150a6e6d3cbede7d59424b770df207f2
MD5 954714e811e1b8c85d4e5247a5d5f861
SHA1 19f18f9bf260200b6fed62eb1c2fa0220fe3cbcc
SHA512 067bc5689f402d7f9dd89d0ebe4b6cdf7cebf227f872e956bb9bb892fe09006d279b016874deaf38a1db529ab39f518f485d5abd75f40edaf67ba8cbe83ec71c
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlN:eSABNx6vb4RoI4pyjHYLhal01UoPX+hG
TLSH
T12293BE07ABA588C9F1217C30566E373487BFA85D3F1457579348EE4E9833D80EC3628A
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 4 IoCs

resource	yara_rule
behavioral2/memory/4004-10-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/4004-11-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/4004-12-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/4004-13-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4004-10-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4004-12-0x0000000010000000-0x0000000010032000-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
2	4004	rundll32.exe
3	4004	rundll32.exe
4	4004	rundll32.exe
5	4004	rundll32.exe
6	4004	rundll32.exe
8	4004	rundll32.exe
10	4004	rundll32.exe
11	4004	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x001a00000002b55a-8.dat	acprotect

Deletes itself 1 IoCs

pid	Process
4732	dnnvfmwx.exe

Executes dropped EXE 1 IoCs

pid	Process
4732	dnnvfmwx.exe

Loads dropped DLL 1 IoCs

pid	Process
4004	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-1-5-21-2043432456-1617298091-2772621413-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\owctxpxf\\rgdpzpq.dll\",DoVirusScan"	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)	\??\e:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
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)	\??\o:	rundll32.exe
File opened (read-only)	\??\a:	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

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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dnnvfmwx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3768	cmd.exe
4420	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
4420	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4004	rundll32.exe
4004	rundll32.exe
4004	rundll32.exe
4004	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4004	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1248	2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe
4732	dnnvfmwx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 3768	1248	2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe	80
PID 3768 wrote to memory of 4420	3768	cmd.exe	82
PID 3768 wrote to memory of 4732	3768	cmd.exe	83
PID 4732 wrote to memory of 4004	4732	dnnvfmwx.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\dnnvfmwx.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3768
- - 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:4420
- - \??\c:\dnnvfmwx.exe
    c:\dnnvfmwx.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-02_954714e811e1b8c85d4e5247a5d5f861_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4732
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\owctxpxf\rgdpzpq.dll",DoVirusScan c:\dnnvfmwx.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:4004

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

dnnvfmwx.exe

Path C:\dnnvfmwx.exe
Size 93KB
SHA256 eb715d59c30a042d62f469575262f15ec85b846062a772b5ebe27031e27635fd
MD5 dbdf04fef9ac67d8c451008b666c4946
SHA1 2fde274edf6d0c9376d4ae93a1752bfad5ee525c
SHA512 4178c595a1305dd8dc92f7823f78294ed3d316b7bef7c3a6db4f3d3f26a1dcec37e6fe94fe273ad19a28c6f929849b6ad886b92707dcc947021e7992fa3c4f42
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzls:eSABNx6vb4RoI4pyjHYLhal01UoPX+hP
TLSH
T17D93BE07ABA589C9F1217C30566E373487BF985D3F1457579348EE4E9833D80EC3628A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

rgdpzpq.dll

Path \??\c:\owctxpxf\rgdpzpq.dll
Size 50KB
SHA256 b2d21c40c5bfc0f7695945946fa1cdd4eaf2f66a8391ddde6307c5f765fbf525
MD5 cbfc06794d16ace6adf42210183fc1b9
SHA1 74fc68a2af225b0aca954b3684940747511013c5
SHA512 181dbe8b63e28a81cb8e0b7240df8745da350e1ab433b157b8b4fd36aa10f0782e807c09563bcffe37cfe64aa1b514b2cc1f179fbcba422d96867179d88e13c9
SSDEEP 768:Z+arYIR3u5v4bGwCl56LNQQe5JBtGf1oTYtx/qQvorLOpqPJ/UP2Gy+OIudD05:ZPrG57TzDxJS6Etx/Zv2OwSy+OIOD05
TLSH
T15733F1ACE2F064F5D0AF6B345952225CF5C26F238D3190DB4A8214BF3C32A5B5B5E721
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1248-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1248-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4004-10-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/4004-11-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/4004-12-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/4004-13-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/4732-7-0x0000000000400000-0x0000000000417000-memory.dmp

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