farfli | 4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260630-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260630-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/07/2026, 08:34

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General

Target
4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.exe
Size 240KB
Sample260702-kgmt3aex4y
SHA256 4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25
MD5 79625cff64e9682f275b681fb2725528
SHA1 0ae67359259da30a7c224cf6d676b656d576d17a
SHA512 1ad2c30dc59fc6f618c3d67369226c219ada816388903f559956a875c58d736fd393f9fa65cf351298c0c9470727cb6f2801b62705cc289fc32e748dd35b462d
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T1DA340100D7B2E5E8D44824BA0787D310EAE1DCDE7B73677143D9E31FAB41F1AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery 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 3 IoCs

resource	yara_rule
behavioral2/memory/5708-16-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/5708-18-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/5708-21-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
4868	uymokgc.exe

Executes dropped EXE 2 IoCs

pid	Process
4868	uymokgc.exe
5708	nxdwlh.exe

Loads dropped DLL 1 IoCs

pid	Process
5708	nxdwlh.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-1-5-21-2132828192-1552876075-2324613956-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\lkqyth\\nxdwlh.exe \"c:\\Program Files\\lkqyth\\nxdwlh.dll\",Compliance"	nxdwlh.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)	\??\y:	nxdwlh.exe
File opened (read-only)	\??\z:	nxdwlh.exe
File opened (read-only)	\??\a:	nxdwlh.exe
File opened (read-only)	\??\h:	nxdwlh.exe
File opened (read-only)	\??\n:	nxdwlh.exe
File opened (read-only)	\??\p:	nxdwlh.exe
File opened (read-only)	\??\w:	nxdwlh.exe
File opened (read-only)	\??\b:	nxdwlh.exe
File opened (read-only)	\??\d:	nxdwlh.exe
File opened (read-only)	\??\g:	nxdwlh.exe
File opened (read-only)	\??\j:	nxdwlh.exe
File opened (read-only)	\??\q:	nxdwlh.exe
File opened (read-only)	\??\u:	nxdwlh.exe
File opened (read-only)	\??\v:	nxdwlh.exe
File opened (read-only)	\??\x:	nxdwlh.exe
File opened (read-only)	\??\k:	nxdwlh.exe
File opened (read-only)	\??\o:	nxdwlh.exe
File opened (read-only)	\??\r:	nxdwlh.exe
File opened (read-only)	\??\s:	nxdwlh.exe
File opened (read-only)	\??\i:	nxdwlh.exe
File opened (read-only)	\??\l:	nxdwlh.exe
File opened (read-only)	\??\m:	nxdwlh.exe
File opened (read-only)	\??\t:	nxdwlh.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	nxdwlh.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\lkqyth	uymokgc.exe
File created	\??\c:\Program Files\lkqyth\nxdwlh.dll	uymokgc.exe
File created	\??\c:\Program Files\lkqyth\nxdwlh.exe	uymokgc.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	4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.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	uymokgc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nxdwlh.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
4892	PING.EXE
4060	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	nxdwlh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	nxdwlh.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4892	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5708	nxdwlh.exe
5708	nxdwlh.exe
5708	nxdwlh.exe
5708	nxdwlh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5708	nxdwlh.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2304	4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.exe
4868	uymokgc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 4060	2304	4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.exe	88
PID 4060 wrote to memory of 4892	4060	cmd.exe	90
PID 4060 wrote to memory of 4868	4060	cmd.exe	91
PID 4868 wrote to memory of 5708	4868	uymokgc.exe	92

C:\Users\Admin\AppData\Local\Temp\4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.exe
"C:\Users\Admin\AppData\Local\Temp\4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\uymokgc.exe "C:\Users\Admin\AppData\Local\Temp\4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4060
- - 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:4892
- - C:\Users\Admin\AppData\Local\Temp\uymokgc.exe
    C:\Users\Admin\AppData\Local\Temp\\uymokgc.exe "C:\Users\Admin\AppData\Local\Temp\4340519dbf8b0736298ffdb397b38aa6dd82ae8f6772cd265f1f2a978be92c25.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:4868
  - - \??\c:\Program Files\lkqyth\nxdwlh.exe
      "c:\Program Files\lkqyth\nxdwlh.exe" "c:\Program Files\lkqyth\nxdwlh.dll",Compliance C:\Users\Admin\AppData\Local\Temp\uymokgc.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:5708

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

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Downloads

nxdwlh.exe

Path C:\Program Files\lkqyth\nxdwlh.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

uymokgc.exe

Path C:\Users\Admin\AppData\Local\Temp\uymokgc.exe
Size 240KB
SHA256 f5a6eae93826793af313ac2e771b7a7506d9c045c30ebbb74feea39acf1561b5
MD5 d4116f349dbe23adc87fa65b56ebdd48
SHA1 eb955c08ebf493f93c0d1371ecbc3c56ab83d87b
SHA512 79b27afe289cd98f4f5f088dba103de3a356f38dec31645075d9fdd5ce8032cd0014717830dd4a6ef344d5924cd66694e9acb8b3de402edb27abe8a168e6e3d1
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T19C340100D7B2E5E8D44824BA0787D310EAE1DCDE7B73677143D9E31FAB41F1AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

nxdwlh.dll

Path \??\c:\Program Files\lkqyth\nxdwlh.dll
Size 141KB
SHA256 1928cd9c1a75cfe9b4e8fd091c8ae5be367dd14c67194969a7cf1c9577e4e531
MD5 1badcaad3924cecfc1ce98473f10f7aa
SHA1 5afe6e4277d0cc4af15e5bb04755222bd6ee298d
SHA512 f40000a5d4a9e732c63eb63a47969625b252e06b6e44fb83467777f2d5294401fe7d603c76bbb7f217d00fb36c66db4bc840e9e7322577a1dbd4cc4960afad6d
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lJ:RGMmfToTJY6zpSyvkGSn1tlJ
TLSH
T105E312E0E3A7C4B6C265573183937DF3162CF4346B18072EFD62A32769394C44B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2304-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2304-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2304-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2304-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4868-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4868-7-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4868-12-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5708-15-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5708-16-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5708-18-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5708-21-0x0000000010000000-0x000000001004E000-memory.dmp

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