farfli | c40a0d683a6886183f35d29a676af98b0a063f53b576dfed52c7c7323cb4f693

General

Target
2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_elex_wannacry.exe
Size 403KB
Sample260929-vpe5asbf64
SHA256 c40a0d683a6886183f35d29a676af98b0a063f53b576dfed52c7c7323cb4f693
MD5 c3a0573f2a5bc56afb2989e914def313
SHA1 96b3f7c5f2e4c9c4749997e11657b085e10e25bd
SHA512 1a53080d999773de1affc9e3f760e37ecbd8c3bf29dfd3343736879edab46f0bd64635ec17ea076584a8e9cd41abe11d6670315e1d2755ecead2da57cd39a886
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LS:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T1C494D02272C08BA3C1866032CDA6EA7CD3E5CD689C705E3773E9F65DDE36941423A275
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 3 IoCs

resource	yara_rule
behavioral1/memory/2688-7-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral1/memory/2688-9-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral1/memory/2688-11-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/2688-7-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2688-9-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2688-11-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000242d3-2.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
22	2688	rundll32.exe
28	2688	rundll32.exe
29	2688	rundll32.exe
55	2688	rundll32.exe

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
2016	aufzqbn.exe

Executes dropped EXE 1 IoCs

pid	Process
2016	aufzqbn.exe

Loads dropped DLL 1 IoCs

pid	Process
2688	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-1-5-21-240542094-4193773837-3211495583-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\luckm\\kphfudved.dll\",InitEngine"	rundll32.exe

Enumerates connected drives 3 TTPs 24 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)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
	\??\f:\	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	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)	\??\s:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\luckm	aufzqbn.exe
File created	\??\c:\Program Files\luckm\kphfudved.dll	aufzqbn.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
1524	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_elex_wannacry.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
1524	cmd.exe
536	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
536	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2688	rundll32.exe
2688	rundll32.exe
2688	rundll32.exe
2688	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
400	2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_elex_wannacry.exe
2016	aufzqbn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 1524	400	2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_elex_wannacry.exe	88
PID 1524 wrote to memory of 536	1524	cmd.exe	91
PID 1524 wrote to memory of 2016	1524	cmd.exe	93
PID 2016 wrote to memory of 2688	2016	aufzqbn.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:400
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\aufzqbn.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_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:1524
- - 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:536
- - C:\Users\Admin\AppData\Local\Temp\aufzqbn.exe
    C:\Users\Admin\AppData\Local\Temp\\aufzqbn.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-29_c3a0573f2a5bc56afb2989e914def313_coinminer_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\luckm\kphfudved.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\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:2688

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

Indicator Removal

1

T1070

File Deletion

Modify Registry

Pre-OS Boot

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

2

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

aufzqbn.exe

Path C:\Users\Admin\AppData\Local\Temp\aufzqbn.exe
Size 404KB
SHA256 05c40c71f87ed46d973db8db3a9c6f470322a9170e1b7a2db09613661239ca57
MD5 dfdd9d14a211c4126fd85c7c63c10c34
SHA1 e7cc9dd40c179603729466295126c1777efa9ad6
SHA512 6a38da4d5d810613786fad32b1a6825be3fbedc4116613b04847a00805b8c99a2f73db7f1dcdc05f374917739ba1dec570c043d82c8f3ae0ef63a246a8c38a66
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LS:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T1E794D02272C08BA3C1866032CDA6EA7CD3E5CD689C705E3773E9F65DDE36941423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

kphfudved.dll

Path \??\c:\Program Files\luckm\kphfudved.dll
Size 176KB
SHA256 4fd1918a852878a180fcb93349fc4057943b61a3710ff300281bbc066353ed5d
MD5 24dc2bfe19a645ffc13b7bcc1d69183f
SHA1 eaa7ee6d98fff716a1f61a7f3c92a03d541dcf0e
SHA512 6e713647d4d8753fb33c45b9d6dbeae4463d1dd63ad1ccd0e5c29fa097e6c1378c10f57dc48d0a8fe89495e46c8c4e8c02261cb50282d64f1b0b83b76ee114aa
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocs:1Jv2tOItshGYdMnYYVjasKbOWSFofs
TLSH
T1A3041261862D1C34D087B7717B05920DF6B453A49179CBD3F7B8AF2A3D12AEA806E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2688-7-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/2688-10-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/2688-9-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/2688-11-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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