farfli | df0fc17584d8cfb2e3708958e13362690cf4e7fee3d7bc8b195d96cd90aaea59

General

Target
2026-10-08_6a89c75ba12689a480d910dc72d909ff_coinminer_elex_wannacry.exe
Size 399KB
Sample261009-ptcbbaex4j
SHA256 df0fc17584d8cfb2e3708958e13362690cf4e7fee3d7bc8b195d96cd90aaea59
MD5 6a89c75ba12689a480d910dc72d909ff
SHA1 ef161185cef7e5b84575737d63a06025c6d77654
SHA512 31590b28f140ee92913d6df0d548131989e83a03d455b285263f378d5b6f9fe5e0e4a5ef8bda317df6bfb0fe30a538b89b9f490a2219f8dcf5ba4d47c4a9dfde
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T1EF94D02272C48BA3C1856432CDA6AA7CD3F5CD689C309E3773E9F65DDE36841423A275
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
behavioral2/memory/2148-8-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/2148-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2148-8-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2148-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000001b85a-1.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	2148	rundll32.exe
3	2148	rundll32.exe
4	2148	rundll32.exe
5	2148	rundll32.exe

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
4468	cvoybrca.exe

Executes dropped EXE 1 IoCs

pid	Process
4468	cvoybrca.exe

Loads dropped DLL 1 IoCs

pid	Process
2148	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-1-5-21-1404337215-1550464601-2805570857-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\kuiqu\\ghcdcqaxp.dll\",InitEngine"	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)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\d:	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)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	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\kuiqu	cvoybrca.exe
File created	\??\c:\Program Files\kuiqu\ghcdcqaxp.dll	cvoybrca.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
1104	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	cvoybrca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-08_6a89c75ba12689a480d910dc72d909ff_coinminer_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

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
1104	cmd.exe
4180	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
4180	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2148	rundll32.exe
2148	rundll32.exe
2148	rundll32.exe
2148	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5060	2026-10-08_6a89c75ba12689a480d910dc72d909ff_coinminer_elex_wannacry.exe
4468	cvoybrca.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 1104	5060	2026-10-08_6a89c75ba12689a480d910dc72d909ff_coinminer_elex_wannacry.exe	89
PID 1104 wrote to memory of 4180	1104	cmd.exe	91
PID 1104 wrote to memory of 4468	1104	cmd.exe	92
PID 4468 wrote to memory of 2148	4468	cvoybrca.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-10-08_6a89c75ba12689a480d910dc72d909ff_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-08_6a89c75ba12689a480d910dc72d909ff_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\cvoybrca.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-08_6a89c75ba12689a480d910dc72d909ff_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:1104
- - 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:4180
- - C:\Users\Admin\AppData\Local\Temp\cvoybrca.exe
    C:\Users\Admin\AppData\Local\Temp\\cvoybrca.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-08_6a89c75ba12689a480d910dc72d909ff_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:4468
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\kuiqu\ghcdcqaxp.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\cvoybrca.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:2148

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:1328

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

cvoybrca.exe

Path C:\Users\Admin\AppData\Local\Temp\cvoybrca.exe
Size 399KB
SHA256 2da732b2ec6f3650bdb29e1acdbbe1f6cfcf1ee1eb113bd49a394af44e86322e
MD5 37ffec969af66ed86ffee3830354c793
SHA1 e33aa9ad43d1f5fa0b1bd049e3b2a207a3f23b65
SHA512 60bd01583c4b6ae9bb4b14ea0e98b666df266a5cbd1fe9ec00b37588576b1bf600c43154f444314abfb3eddae58769e341c43d8f7d708ded4186e53e3b6060a1
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T1A194D02272C48BA3C1856432CDA6AA7CD3F5CD689C309E3773E9F65DDE36841423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ghcdcqaxp.dll

Path \??\c:\Program Files\kuiqu\ghcdcqaxp.dll
Size 176KB
SHA256 994c65da101a3d68bbefd123621a6629dd4f49418c18bbb3730b6a2251880d35
MD5 6ff0e07d89c914fdd5f7dff503bac005
SHA1 919e63aa8b441fcab5bca2cccece449dbd9bcecb
SHA512 524dc04aa6f799ac490ad7ad8b807e5b90b7711f2274facce441144a209ccf853a4c54f06f8fe89edccbdd18d7f245002797b43a74dabbf2286d9c8d68274e8f
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFooc8:1Jv2tOItshGYdMnYYVjasKbOWSFof8
TLSH
T1C4041261862D1C30C087B7717B05920DF6B452A491B9CBD3F7B8AF2B3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2148-6-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/2148-7-0x000000001005A000-0x000000001005B000-memory.dmp

Download

memory/2148-8-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/2148-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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