farfli | fed522687870795d755af9d4e312ca7d99a003be0ef3428c2dc5795e6bf58c55

Analysis

max time kernel
149s
max time network
153s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/08/2026, 04:36

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General

Target
2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_wannacry.exe
Size 553KB
Sample260812-e8q3xayfkb
SHA256 fed522687870795d755af9d4e312ca7d99a003be0ef3428c2dc5795e6bf58c55
MD5 523d0e354231ddaf6468f63c0e5cee13
SHA1 c893b98085b287a93e03681539ef4b12c079e4f1
SHA512 751da6a7ea7ed2fdc323bc605921b8197be9400f45c77ea2f2e5d457c1c1eaf2684875b396d7383d996c86ec4bd1d9b1c9078f3bf347e911375f5cc3258d1b4d
SSDEEP 6144:YBcsToNOF/VPzPnVu14MfrkEzmI0jL1cb71Xzb7B:kcso2V7Pc4Mzpz10vCH1f7B
TLSH
T1C0C4027275760A86E01691B0E7627D3DDA6DD80F351D9A2B8F04050FA873E164CFAF8E
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 2 IoCs

resource	yara_rule
behavioral2/memory/4268-7-0x0000000010000000-0x000000001007F000-memory.dmp	family_farfli
behavioral2/memory/4268-9-0x0000000010000000-0x000000001007F000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4268-7-0x0000000010000000-0x000000001007F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4268-9-0x0000000010000000-0x000000001007F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 15 IoCs

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

flow	pid	Process
7	4268	rundll32.exe
8	4268	rundll32.exe
9	4268	rundll32.exe
10	4268	rundll32.exe
11	4268	rundll32.exe
13	4268	rundll32.exe
14	4268	rundll32.exe
16	4268	rundll32.exe
19	4268	rundll32.exe
20	4268	rundll32.exe
22	4268	rundll32.exe
24	4268	rundll32.exe
25	4268	rundll32.exe
26	4268	rundll32.exe
27	4268	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3808	sprig.exe

Executes dropped EXE 1 IoCs

pid	Process
3808	sprig.exe

Loads dropped DLL 1 IoCs

pid	Process
4268	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-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\lhwupl\\kymgw.dll\",Getlua"	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)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	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)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\n:	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

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
5220	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	2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_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	sprig.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
5220	cmd.exe
6732	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
6732	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe
4268	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4268	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4744	2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_wannacry.exe
3808	sprig.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 5220	4744	2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_wannacry.exe	91
PID 5220 wrote to memory of 6732	5220	cmd.exe	93
PID 5220 wrote to memory of 3808	5220	cmd.exe	94
PID 3808 wrote to memory of 4268	3808	sprig.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\sprig.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_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:5220
- - 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:6732
- - C:\Users\Admin\AppData\Local\Temp\sprig.exe
    C:\Users\Admin\AppData\Local\Temp\\sprig.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-12_523d0e354231ddaf6468f63c0e5cee13_elex_gh0st-rat_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3808
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\lhwupl\kymgw.dll",Getlua C:\Users\Admin\AppData\Local\Temp\sprig.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:4268

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

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Downloads

sprig.exe

Path C:\Users\Admin\AppData\Local\Temp\sprig.exe
Size 553KB
SHA256 7666711211f6fba38f0c24cfd26dafd76588c8c227d3fe3c9037a291cbf50cc1
MD5 5d04bf03ca62ee194c326a8860f75dd9
SHA1 48741b56a14a4bc80f5011a0688e53fd536d7f46
SHA512 3e2863fb53ab9c71deb1649660f14503b0a2990f828ad10154072d445968184537b17efa25164dc6683d6680191700c00ace910503d61285e75431a1c856a824
SSDEEP 6144:YBcsToNOF/VPzPnVu14MfrkEzmI0jL1cb71Xzb7h:kcso2V7Pc4Mzpz10vCH1f7h
TLSH
T1C7C4027275764A86E01691B0E7626D3DDA6CD80F351C9A2B8F04050FA873E164CFAF8E
MD5 SHA1 SHA512 SSDEEP TLSH

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kymgw.dll

Path \??\c:\lhwupl\kymgw.dll
Size 232KB
SHA256 1ec5eac2d82d292aa642c962aee4cacb3e3cc0f288e84cbee356bbee445957f8
MD5 c433755204058fac12364a0df1d91993
SHA1 45dd5f2be209e0fa4cee993ac4dfda0153581d5e
SHA512 9a0a68b05c614e1beee0741002a84fc1d696c1d1f16d7afb0ac6b476a4fa487b8a7400dc1d35b0528bcc1c11f11fc0e28b6a78d8d6d7dd09d67b27c848abf8d6
SSDEEP 6144:Pr8MZSC3s9b0gdl7RTk8WhBFfGuL/HiTj:wy/Gb99a8IFfRL/Hkj
TLSH
T1063412C1B3BE6134FC9383790EA419BDF99045A42E3DE176EFA455263D02D2268396CF
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4268-6-0x0000000010000000-0x000000001007F000-memory.dmp

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memory/4268-7-0x0000000010000000-0x000000001007F000-memory.dmp

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memory/4268-9-0x0000000010000000-0x000000001007F000-memory.dmp

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