farfli | 28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
05/08/2026, 11:34

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General

Target
28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.exe
Size 208KB
Sample260805-npwnqaae59
SHA256 28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e
MD5 a352147e53a24fe1377e2a4c16148eef
SHA1 0e035f85f39656fdffd54f158f2d1bc0979f9d33
SHA512 c0a60677501c3ea4be6bb90498e0d517c6b985cb8ea37ff86d39d268008cc21f45ffb35823f61c2c1bed15f3aba26cb9871a75b3d3ca1f434fb5b44e7bee3599
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFr:X2vnSwjaOcADw9cUeCOfr
TLSH
T1F3241200CBB5B5E8D498607F0AC3A320EBF29DCEBB735BB152D6D22B9F40F166459590
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

107.163.241.193:6520
http://107.163.241.181:16300/
http://107.163.241.182:12354/login.php

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli
Family: Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat

Detects Farfli Backdoor 4 IoCs

resource	yara_rule
behavioral2/memory/2464-15-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/2464-16-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/2464-18-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/2464-21-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
3940	idxkzt.exe

Executes dropped EXE 2 IoCs

pid	Process
3940	idxkzt.exe
2464	lxy.exe

Loads dropped DLL 1 IoCs

pid	Process
2464	lxy.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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\wygrmc\\lxy.exe \"c:\\Program Files\\wygrmc\\lxyau.dll\",Compliance"	lxy.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:	lxy.exe
File opened (read-only)	\??\y:	lxy.exe
File opened (read-only)	\??\n:	lxy.exe
File opened (read-only)	\??\o:	lxy.exe
File opened (read-only)	\??\s:	lxy.exe
File opened (read-only)	\??\v:	lxy.exe
File opened (read-only)	\??\z:	lxy.exe
File opened (read-only)	\??\a:	lxy.exe
File opened (read-only)	\??\d:	lxy.exe
File opened (read-only)	\??\g:	lxy.exe
File opened (read-only)	\??\k:	lxy.exe
File opened (read-only)	\??\r:	lxy.exe
File opened (read-only)	\??\t:	lxy.exe
File opened (read-only)	\??\u:	lxy.exe
File opened (read-only)	\??\h:	lxy.exe
File opened (read-only)	\??\i:	lxy.exe
File opened (read-only)	\??\l:	lxy.exe
File opened (read-only)	\??\m:	lxy.exe
File opened (read-only)	\??\q:	lxy.exe
File opened (read-only)	\??\x:	lxy.exe
File opened (read-only)	\??\b:	lxy.exe
File opened (read-only)	\??\j:	lxy.exe
File opened (read-only)	\??\p:	lxy.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	lxy.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\wygrmc	idxkzt.exe
File created	\??\c:\Program Files\wygrmc\lxyau.dll	idxkzt.exe
File created	\??\c:\Program Files\wygrmc\lxy.exe	idxkzt.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
1812	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	idxkzt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lxy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.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
1812	cmd.exe
5764	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	lxy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	lxy.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5764	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2464	lxy.exe
2464	lxy.exe
2464	lxy.exe
2464	lxy.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2464	lxy.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5856	28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.exe
3940	idxkzt.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5856 wrote to memory of 1812	5856	28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.exe	89
PID 1812 wrote to memory of 5764	1812	cmd.exe	91
PID 1812 wrote to memory of 3940	1812	cmd.exe	92
PID 3940 wrote to memory of 2464	3940	idxkzt.exe	93

C:\Users\Admin\AppData\Local\Temp\28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.exe
"C:\Users\Admin\AppData\Local\Temp\28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5856
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\idxkzt.exe "C:\Users\Admin\AppData\Local\Temp\28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.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:1812
- - 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:5764
- - C:\Users\Admin\AppData\Local\Temp\idxkzt.exe
    C:\Users\Admin\AppData\Local\Temp\\idxkzt.exe "C:\Users\Admin\AppData\Local\Temp\28d3620c5cadf4478c8543124f30c4c82644764306c1794fb63984c278828c8e.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:3940
  - - \??\c:\Program Files\wygrmc\lxy.exe
      "c:\Program Files\wygrmc\lxy.exe" "c:\Program Files\wygrmc\lxyau.dll",Compliance C:\Users\Admin\AppData\Local\Temp\idxkzt.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:2464

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

lxy.exe

Path C:\Program Files\wygrmc\lxy.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

idxkzt.exe

Path C:\Users\Admin\AppData\Local\Temp\idxkzt.exe
Size 209KB
SHA256 682893565296a3687f0bb0e394671dba4aefbfb1f0ac226bb556fd3c19e50938
MD5 4a89988d59ace399babc6917b8a62a55
SHA1 977bffd11e5a92ee3742332244505bb499421a2a
SHA512 27b37d639bbfd008d9427cf185a60f4225d5ed9e658b631674e5bd662b8522322cdbf58b00edf00519d18ac8e8697ba5391c6902766192ed978473dfe89d8b14
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTF:X2vnSwjaOcADw9cUeCOf
TLSH
T1DE241200CBB5B5E8D498607F0AC3A320EBF29DCEBB735BB152D6D22B9F40F166459590
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

lxyau.dll

Path \??\c:\Program Files\wygrmc\lxyau.dll
Size 141KB
SHA256 cbfbbd5ffd8355fa42b47fd6774f6a915d7f2370a28866c1fd38519ae7030a19
MD5 994b0a0808bd8db24ee169f7cea500e9
SHA1 e2e9081b67ed63d0a58b7212f53b2e1c687fc8aa
SHA512 b2143b6fb92710cad459c57cbb4d8c56310a2707c2d78f04228373df4e23a6db3f5d6bfedfce57b7ea6f7910e7042359f195c1b1f51be236ad1354534c402988
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lD:RGMmfToTJY6zpSyvkGSn1tlD
TLSH
T14AE312E0F3A7C4B6C269573183937DF3162CF5346B18072EFD62A32769394C44A9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2464-15-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/2464-16-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/2464-18-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/2464-21-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3940-12-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5856-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5856-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5856-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5856-5-0x0000000000400000-0x000000000044901D-memory.dmp

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