farfli | 1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6

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
08/08/2026, 08:32

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General

Target
1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.exe
Size 198KB
Sample260808-kfkcjstamd
SHA256 1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6
MD5 0feaecd286e6e6876882311b87896c30
SHA1 4dc0d9ec5b8d520275d3f7e9971c0c01b2f4f337
SHA512 c33b8b475493e01aee80860afe3652070c1994e7ba4028253a0ae7c69194703b01eecddc1dca75509a9e082a13a83ca4896fb870543930a745aceeb518db76b3
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTu:X2vnSwjaOcADw9cUeCOfY
TLSH
T1FF141200DBB4A1E4D498747A0AC3A221E7F2DACDBB735BB152D6D22FAF41F152459890
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/8-16-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/8-17-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/8-19-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/8-22-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
5936	glfduaa.exe

Executes dropped EXE 2 IoCs

pid	Process
5936	glfduaa.exe
8	zyuye.exe

Loads dropped DLL 1 IoCs

pid	Process
8	zyuye.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-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\giyjwh\\zyuye.exe \"c:\\Program Files\\giyjwh\\zyuye.dll\",Compliance"	zyuye.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)	\??\j:	zyuye.exe
File opened (read-only)	\??\k:	zyuye.exe
File opened (read-only)	\??\l:	zyuye.exe
File opened (read-only)	\??\r:	zyuye.exe
File opened (read-only)	\??\g:	zyuye.exe
File opened (read-only)	\??\h:	zyuye.exe
File opened (read-only)	\??\n:	zyuye.exe
File opened (read-only)	\??\t:	zyuye.exe
File opened (read-only)	\??\w:	zyuye.exe
File opened (read-only)	\??\b:	zyuye.exe
File opened (read-only)	\??\m:	zyuye.exe
File opened (read-only)	\??\p:	zyuye.exe
File opened (read-only)	\??\u:	zyuye.exe
File opened (read-only)	\??\v:	zyuye.exe
File opened (read-only)	\??\z:	zyuye.exe
File opened (read-only)	\??\d:	zyuye.exe
File opened (read-only)	\??\o:	zyuye.exe
File opened (read-only)	\??\q:	zyuye.exe
File opened (read-only)	\??\s:	zyuye.exe
File opened (read-only)	\??\x:	zyuye.exe
File opened (read-only)	\??\y:	zyuye.exe
File opened (read-only)	\??\a:	zyuye.exe
File opened (read-only)	\??\i:	zyuye.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	zyuye.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\giyjwh	glfduaa.exe
File created	\??\c:\Program Files\giyjwh\zyuye.dll	glfduaa.exe
File created	\??\c:\Program Files\giyjwh\zyuye.exe	glfduaa.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
4232	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	zyuye.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.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	glfduaa.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
4836	PING.EXE
4232	cmd.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	zyuye.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	zyuye.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4836	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
8	zyuye.exe
8	zyuye.exe
8	zyuye.exe
8	zyuye.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	8	zyuye.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1236	1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.exe
5936	glfduaa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 4232	1236	1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.exe	89
PID 4232 wrote to memory of 4836	4232	cmd.exe	91
PID 4232 wrote to memory of 5936	4232	cmd.exe	92
PID 5936 wrote to memory of 8	5936	glfduaa.exe	93

C:\Users\Admin\AppData\Local\Temp\1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.exe
"C:\Users\Admin\AppData\Local\Temp\1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\glfduaa.exe "C:\Users\Admin\AppData\Local\Temp\1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.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:4232
- - 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:4836
- - C:\Users\Admin\AppData\Local\Temp\glfduaa.exe
    C:\Users\Admin\AppData\Local\Temp\\glfduaa.exe "C:\Users\Admin\AppData\Local\Temp\1938cef022eaafeb67fb78f87f89928f89f99e17c1b51d91755ea9df5ae684e6.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:5936
  - - \??\c:\Program Files\giyjwh\zyuye.exe
      "c:\Program Files\giyjwh\zyuye.exe" "c:\Program Files\giyjwh\zyuye.dll",Compliance C:\Users\Admin\AppData\Local\Temp\glfduaa.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:8

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

zyuye.exe

Path C:\Program Files\giyjwh\zyuye.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

glfduaa.exe

Path C:\Users\Admin\AppData\Local\Temp\glfduaa.exe
Size 199KB
SHA256 c899dfecc6e00d385f6f1bd76de08574fdf63415387c4053e7b1f12ba4a24867
MD5 e860a415ba558734816ce9d1f065a1b7
SHA1 65abb5fa9df1f3ecbb1696502b0ee8c063ebe6d9
SHA512 563f172daf911caad86bd0c6d60ede3dcbec71c9ecbd05f9714cac29ed9b253141974689d0a9edeb128f7f77852025f50e2219d3c84bfdb6819e40b038fdea6f
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
TLSH
T152141200DBB4A1E4D498747A0AC3A221E7F2DECDBB735BB152D6D22FAF41F152459890
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

zyuye.dll

Path \??\c:\Program Files\giyjwh\zyuye.dll
Size 141KB
SHA256 fe466116f62359a8a7b39df15f7b86844d3845329e5434528c147965f472ab5f
MD5 3a561f7124e787c2f77fd62907962d2d
SHA1 cc55834332f478edf0cf2dbc813555bb640ee731
SHA512 e29ee74347535d4c839d6a93976b20e8eedb6b4fdf44ab78c7d5e841f68d63457c0ab0c90aec9c9a544dfd35c52ab9b0caa5a81b922a6f188d5d4475f75c2b6a
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4l1:RGMmfToTJY6zpSyvkGSn1tl1
TLSH
T138E312E0E3B7C4B6C265573183937DF3162CF5346B18072EED62A32769394C84A9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/8-22-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/8-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/8-17-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/8-16-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1236-5-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1236-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1236-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1236-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5936-13-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5936-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5936-9-0x0000000000400000-0x000000000044901D-memory.dmp

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