farfli | 2722992cd48d85a1a943a90dfa1dd9b2399b8d487af6b778bf7afca1fd1f924a

General

Target
2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_coinminer_elex_wannacry.exe
Size 412KB
Sample260908-n3rxpayvbw
SHA256 2722992cd48d85a1a943a90dfa1dd9b2399b8d487af6b778bf7afca1fd1f924a
MD5 cf8b5122e57cfe53d22a83bc3855a4c7
SHA1 4d26466af177fad22e19a9ebd65bdf445b9429ab
SHA512 810557afc5dbfbc99f60194b4e8b10021cea7c9b769a42f4c60eb97fe1827a4b898217800f89ef1c4efb9f0453923ac8268c9d2c25c4cdd188e30d10357b3f13
SSDEEP 12288:JdDU6g13sJd1fm/+yb3O2jg82ydU/DdKum8u:JdE3sJd1fm/+yb3OYg84/JHzu
TLSH
T18594AF01E7C351D6DE82257081FA7376B378DA4D0F12C7E3BBA8EE2E6E21191953B119
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
behavioral2/memory/1784-8-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/1784-10-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/1784-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/1784-8-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1784-10-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1784-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/files/0x001100000001b671-1.dat	UPX
behavioral2/files/0x000d00000001c54a-5.dat	UPX
behavioral2/memory/1784-7-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/1784-8-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/1784-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/1784-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
3728	xfnbp.exe

Executes dropped EXE 2 IoCs

pid	Process
3728	xfnbp.exe
1784	qypfnxeyq.exe

Loads dropped DLL 1 IoCs

pid	Process
1784	qypfnxeyq.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-1-5-21-3611646547-550105268-947503007-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\rgqqa\\qypfnxeyq.exe \"c:\\Program Files\\rgqqa\\hzfof.dll\",Viewer"	qypfnxeyq.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)	\??\i:	qypfnxeyq.exe
File opened (read-only)	\??\j:	qypfnxeyq.exe
File opened (read-only)	\??\n:	qypfnxeyq.exe
File opened (read-only)	\??\o:	qypfnxeyq.exe
File opened (read-only)	\??\p:	qypfnxeyq.exe
File opened (read-only)	\??\d:	qypfnxeyq.exe
File opened (read-only)	\??\l:	qypfnxeyq.exe
File opened (read-only)	\??\q:	qypfnxeyq.exe
File opened (read-only)	\??\r:	qypfnxeyq.exe
File opened (read-only)	\??\t:	qypfnxeyq.exe
File opened (read-only)	\??\v:	qypfnxeyq.exe
File opened (read-only)	\??\y:	qypfnxeyq.exe
File opened (read-only)	\??\z:	qypfnxeyq.exe
File opened (read-only)	\??\m:	qypfnxeyq.exe
File opened (read-only)	\??\w:	qypfnxeyq.exe
File opened (read-only)	\??\a:	qypfnxeyq.exe
File opened (read-only)	\??\k:	qypfnxeyq.exe
File opened (read-only)	\??\s:	qypfnxeyq.exe
File opened (read-only)	\??\u:	qypfnxeyq.exe
File opened (read-only)	\??\x:	qypfnxeyq.exe
File opened (read-only)	\??\b:	qypfnxeyq.exe
File opened (read-only)	\??\g:	qypfnxeyq.exe
File opened (read-only)	\??\h:	qypfnxeyq.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	qypfnxeyq.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\rgqqa	xfnbp.exe
File created	\??\c:\Program Files\rgqqa\hzfof.dll	xfnbp.exe
File created	\??\c:\Program Files\rgqqa\qypfnxeyq.exe	xfnbp.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
4608	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	qypfnxeyq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xfnbp.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
4608	cmd.exe
1444	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	qypfnxeyq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	qypfnxeyq.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1444	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1784	qypfnxeyq.exe
1784	qypfnxeyq.exe
1784	qypfnxeyq.exe
1784	qypfnxeyq.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1784	qypfnxeyq.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2272	2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_coinminer_elex_wannacry.exe
3728	xfnbp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2272 wrote to memory of 4608	2272	2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_coinminer_elex_wannacry.exe	89
PID 4608 wrote to memory of 1444	4608	cmd.exe	91
PID 4608 wrote to memory of 3728	4608	cmd.exe	92
PID 3728 wrote to memory of 1784	3728	xfnbp.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xfnbp.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_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:4608
- - 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:1444
- - C:\Users\Admin\AppData\Local\Temp\xfnbp.exe
    C:\Users\Admin\AppData\Local\Temp\\xfnbp.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-08_cf8b5122e57cfe53d22a83bc3855a4c7_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:3728
  - - \??\c:\Program Files\rgqqa\qypfnxeyq.exe
      "c:\Program Files\rgqqa\qypfnxeyq.exe" "c:\Program Files\rgqqa\hzfof.dll",Viewer C:\Users\Admin\AppData\Local\Temp\xfnbp.exe
      4⤵
      Executes dropped EXE
      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:1784

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

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

qypfnxeyq.exe

Path C:\Program Files\rgqqa\qypfnxeyq.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

xfnbp.exe

Path C:\Users\Admin\AppData\Local\Temp\xfnbp.exe
Size 413KB
SHA256 744539309f53665e4202bcb5488cc24468887027f80d0e371b9285e9b1502890
MD5 1a6d817ed33d60856c60fb581ab46282
SHA1 c5bd24bb3250dbe479479a71563f476394cb7aaa
SHA512 6fc832f650ec24604c4a7d85c6a9779f65ff8eaf828302e2c6b44b5840e78fa5c25964a5739a1bd7bd804a5ddfdde6c7eac88e7ea622ecdc749c4fba7b10e6bb
SSDEEP 12288:JdDU6g13sJd1fm/+yb3O2jg82ydU/DdKum8:JdE3sJd1fm/+yb3OYg84/JHz
TLSH
T13B94AF01E7C351D6DE82257081FA7376B378DA4D0F12C7E3BBA8EE2E6E21191953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

hzfof.dll

Path \??\c:\Program Files\rgqqa\hzfof.dll
Size 89KB
SHA256 e5df83a1712fefb02b698e75ddc2983043cae4f5cb85822327acdc54625618fd
MD5 79d89932accdc477e22594cdfc2ad06d
SHA1 cf88b97cc2d38a0fe1c27189f560421e24c97507
SHA512 0d528362f91cebb1e3023d6e9c3410c1b0ba2f829d504997ff6d62021725a32ff35c9c50ebaaab5c66d48f142d150053c35fe578281cda0ed3c1febafd23654b
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGIb:M1uF6Feu2NlQOBcGIb
TLSH
T11E9302C45665CD8BCCD870B2727FAA4EE631C48CB981ACB34A5E17A31A365F3D01A745
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1784-7-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1784-8-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1784-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1784-13-0x0000000010000000-0x0000000010033000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads