farfli | 622829101da290091c8440dac219576f6787be9732ea5230ae444848500fec70

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
15/04/2026, 10:02

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General

Target
2026-04-15_2f4e2227f4a7168ccc5690522236939b_coinminer_elex_wannacry.exe
Size 406KB
Sample260415-l2rt7abv8k
SHA256 622829101da290091c8440dac219576f6787be9732ea5230ae444848500fec70
MD5 2f4e2227f4a7168ccc5690522236939b
SHA1 cbf39f6a4a5b8b37e16ead5c6293e8c961e46f86
SHA512 afbecaabb611e7fe866ddabf06bad5ac5c2546acb03446ca08322b36fdf36e2f6040b1cf91b64ccb59e5034fc8d0b314054535e77176ae8f536fc5a44ef5acf9
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum4O:zdE3sJd1fm/+yb3OYs84/JHdO
TLSH
T17194AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
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/552-14-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/552-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/552-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/552-19-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/552-14-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/552-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/552-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/552-19-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/1348-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/1348-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x001d00000002b1f7-4.dat	UPX
behavioral2/memory/1080-10-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x001a00000002b495-11.dat	UPX
behavioral2/memory/552-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/552-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/552-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/552-19-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
1080	ipbgy.exe

Executes dropped EXE 2 IoCs

pid	Process
1080	ipbgy.exe
552	lsrfl.exe

Loads dropped DLL 1 IoCs

pid	Process
552	lsrfl.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-1-5-21-1383858298-2057492509-1726743289-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\vpsdnw\\lsrfl.exe \"c:\\Program Files\\vpsdnw\\lsrfl.dll\",Viewer"	lsrfl.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)	\??\w:	lsrfl.exe
File opened (read-only)	\??\x:	lsrfl.exe
File opened (read-only)	\??\z:	lsrfl.exe
File opened (read-only)	\??\a:	lsrfl.exe
File opened (read-only)	\??\e:	lsrfl.exe
File opened (read-only)	\??\h:	lsrfl.exe
File opened (read-only)	\??\j:	lsrfl.exe
File opened (read-only)	\??\k:	lsrfl.exe
File opened (read-only)	\??\n:	lsrfl.exe
File opened (read-only)	\??\b:	lsrfl.exe
File opened (read-only)	\??\g:	lsrfl.exe
File opened (read-only)	\??\i:	lsrfl.exe
File opened (read-only)	\??\m:	lsrfl.exe
File opened (read-only)	\??\s:	lsrfl.exe
File opened (read-only)	\??\t:	lsrfl.exe
File opened (read-only)	\??\u:	lsrfl.exe
File opened (read-only)	\??\v:	lsrfl.exe
File opened (read-only)	\??\r:	lsrfl.exe
File opened (read-only)	\??\y:	lsrfl.exe
File opened (read-only)	\??\l:	lsrfl.exe
File opened (read-only)	\??\o:	lsrfl.exe
File opened (read-only)	\??\p:	lsrfl.exe
File opened (read-only)	\??\q:	lsrfl.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	lsrfl.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vpsdnw	ipbgy.exe
File created	\??\c:\Program Files\vpsdnw\lsrfl.dll	ipbgy.exe
File created	\??\c:\Program Files\vpsdnw\lsrfl.exe	ipbgy.exe
File opened for modification	\??\c:\Program Files\vpsdnw\lsrfl.exe	ipbgy.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	lsrfl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-04-15_2f4e2227f4a7168ccc5690522236939b_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	ipbgy.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
2776	cmd.exe
1752	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	lsrfl.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	lsrfl.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1752	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
552	lsrfl.exe
552	lsrfl.exe
552	lsrfl.exe
552	lsrfl.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	552	lsrfl.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1348	2026-04-15_2f4e2227f4a7168ccc5690522236939b_coinminer_elex_wannacry.exe
1080	ipbgy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 2776	1348	2026-04-15_2f4e2227f4a7168ccc5690522236939b_coinminer_elex_wannacry.exe	80
PID 2776 wrote to memory of 1752	2776	cmd.exe	82
PID 2776 wrote to memory of 1080	2776	cmd.exe	83
PID 1080 wrote to memory of 552	1080	ipbgy.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-04-15_2f4e2227f4a7168ccc5690522236939b_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-15_2f4e2227f4a7168ccc5690522236939b_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ipbgy.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_2f4e2227f4a7168ccc5690522236939b_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2776
- - 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:1752
- - C:\Users\Admin\AppData\Local\Temp\ipbgy.exe
    C:\Users\Admin\AppData\Local\Temp\\ipbgy.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_2f4e2227f4a7168ccc5690522236939b_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:1080
  - - \??\c:\Program Files\vpsdnw\lsrfl.exe
      "c:\Program Files\vpsdnw\lsrfl.exe" "c:\Program Files\vpsdnw\lsrfl.dll",Viewer C:\Users\Admin\AppData\Local\Temp\ipbgy.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:552

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

Replay Monitor

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Downloads

lsrfl.exe

Path C:\Program Files\vpsdnw\lsrfl.exe
Size 40KB
SHA256 8dcaeeebef9b9f3d41d295db145ffb3850f309d089c08125c7fa7034db5fd80e
MD5 22bb5bd901d8b25ac5b41edbb7d5053e
SHA1 8a935dd8d7e104fc553ff7e8b54a404f7b079334
SHA512 cc3fb68fd6791a08e4a7d1a8db8d07cfcc8c9b9dceec10b53f0cb7ee86473303a19be4f23e379f84c59e02d0568e7c066e21cd1300f6032dac4ba52f609f62e7
SSDEEP 768:C67uhQpPPp0nnqFk509FRdVcQX6N58hJYim1jLP3RRe:C67uhQpXp0nnqa5093jKNAmB3RR
TLSH
T10C134C02BE88C071DDA114B41A5DB337939DED604B1586D3593887EBAA2D3E39E343DE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ipbgy.exe

Path C:\Users\Admin\AppData\Local\Temp\ipbgy.exe
Size 407KB
SHA256 4d870f55c95ed8db9bab03b052989b8a8c474ed66c9376a371347d32367ba74b
MD5 bbb47ab9f1efcf284b0a4876384d3b1d
SHA1 f03eb708cd797a4ee085493b2c86cb245b38d255
SHA512 20b5fdb850962486deb36eed254d194804dfc4de9cb13f4e138b00bc47dbc7d0254efe492b9460707b5c8e9d0cc57881defc4148924473ddf0b9afc2703a9c08
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum4:zdE3sJd1fm/+yb3OYs84/JHd
TLSH
T1B794AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

lsrfl.dll

Path \??\c:\Program Files\vpsdnw\lsrfl.dll
Size 89KB
SHA256 0ce1d4ae854d85103fce4ad127a447c5005122c5840e4de16190c6e6c6e58392
MD5 cac24908d175e25034af89c8d6b377f4
SHA1 0dc9231df3e4959850aa5be8a5f7519efffc54d1
SHA512 ba9b38d8567ba73191e07f6eb4ed362404ff6062b7c15c858cdfd935ec5d5095e4f480f2a3d6faeda6dc6042b538b7df1368515e062dc338276ca69cd9a200cc
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGC:M1uF6Feu2NlQOBcGC
TLSH
T1FA9302C45665CD8BCCD87072327FAA4EE631D4CCB941ACB34A5E13A31A36AF3D41AB05
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/552-14-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/552-15-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/552-17-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/552-19-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1080-10-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/1348-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/1348-2-0x0000000000400000-0x0000000000471000-memory.dmp

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