farfli | 338900bc74ae0fdd2f072a1ba787d8154e626a4d9a57ac7ed56d36e8606caf5f

General

Target
2026-07-08_8d8a52685e309c91bb2852b35319b69a_elex_wannacry.exe
Size 96KB
Sample260708-kddf8ads9t
SHA256 338900bc74ae0fdd2f072a1ba787d8154e626a4d9a57ac7ed56d36e8606caf5f
MD5 8d8a52685e309c91bb2852b35319b69a
SHA1 11dedeb7531015881f4696f54c94f3acf973c068
SHA512 0adc8b3ef3ca116ddd23f010454c9fe4c4b5b9b437c66fbfea2c330cacac1945c4eaed3c21eae22ca60bead0c2667dfb44228261a4001ba6f0fc27b2825e37a9
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6N:el69Ml0TEW
TLSH
T1DAA3AE07ABA589D9F1217C30566D373187BFA85E3F1457679348EE4EA433D80EC3628A
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 1 IoCs

resource	yara_rule
behavioral2/memory/3372-10-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 1 IoCs

resource	yara_rule
behavioral2/memory/3372-10-0x0000000010000000-0x0000000010032000-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	3372	rundll32.exe
3	3372	rundll32.exe
4	3372	rundll32.exe
6	3372	rundll32.exe
7	3372	rundll32.exe
9	3372	rundll32.exe
10	3372	rundll32.exe
11	3372	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0008000000016b44-7.dat	acprotect

Deletes itself 1 IoCs

pid	Process
3080	nxkvu.exe

Executes dropped EXE 1 IoCs

pid	Process
3080	nxkvu.exe

Loads dropped DLL 1 IoCs

pid	Process
3372	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-1-5-21-2626306573-1585762579-411806764-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\noiwqdfyz\\llbpug.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)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	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)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	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	2026-07-08_8d8a52685e309c91bb2852b35319b69a_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	nxkvu.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
3132	cmd.exe
4796	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
4796	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe
3372	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3372	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5824	2026-07-08_8d8a52685e309c91bb2852b35319b69a_elex_wannacry.exe
3080	nxkvu.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5824 wrote to memory of 3132	5824	2026-07-08_8d8a52685e309c91bb2852b35319b69a_elex_wannacry.exe	88
PID 3132 wrote to memory of 4796	3132	cmd.exe	90
PID 3132 wrote to memory of 3080	3132	cmd.exe	91
PID 3080 wrote to memory of 3372	3080	nxkvu.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-07-08_8d8a52685e309c91bb2852b35319b69a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-08_8d8a52685e309c91bb2852b35319b69a_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5824
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\nxkvu.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-08_8d8a52685e309c91bb2852b35319b69a_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3132
- - 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:4796
- - \??\c:\nxkvu.exe
    c:\nxkvu.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-08_8d8a52685e309c91bb2852b35319b69a_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3080
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\noiwqdfyz\llbpug.dll",DoVirusScan c:\nxkvu.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:3372

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

llbpug.dll

Path \??\c:\noiwqdfyz\llbpug.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

nxkvu.exe

Path \??\c:\nxkvu.exe
Size 96KB
SHA256 982c8f1c05ad25c81da358ef4d86a069a4df2194500fd5e38f17fd736e662b98
MD5 1eafc5a3ec1fde8cebf2eaacb06a9f48
SHA1 b7165341abd8101257306416d8bec9f7aec2bc30
SHA512 802357697c47454f8bf83c5fd277a350aa1bbebdf8c9f47ed0c455356d8c21511c94dcb4c333295933790b9cb50801fecf96f861db602050147a4f7e3f9d629d
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6c:el69Ml0TEN
TLSH
T191A3AE07ABA589C9F1217C30566D373187BFA85E3F1457679348EE4EA433D80EC3628A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3080-6-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/3372-9-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/3372-10-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/5824-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5824-2-0x0000000000400000-0x0000000000417000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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