farfli | 768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7

Analysis

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

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
04/05/2026, 09:06

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General

Target
768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe
Size 235KB
Sample260504-k249vafs8x
SHA256 768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7
MD5 d6f3beaffbbfbe1e3a71727546bc90ea
SHA1 084023daa24fcde9d4834a532dd712a2fcdd6ed8
SHA512 df2b6458b3d8db3fe384e96465f7c20b48dab2511ba22d2097bfc9ebefdbc8a52314850539feceea8401e5c4e533febc8ce9e8f5691b51ee799beb00839b665e
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T14C340100D7B2E5E8D44824BA0787D310EAE5DC9E7B736B7143D5E21FAB41F0AA4AA194
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 2 IoCs

resource	yara_rule
behavioral2/memory/3148-19-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3148-20-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
5044	zknco.exe

Executes dropped EXE 2 IoCs

pid	Process
5044	zknco.exe
3148	mph.exe

Loads dropped DLL 1 IoCs

pid	Process
3148	mph.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-1-5-21-600123060-2148212387-2211176695-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\jrfha\\mph.exe \"c:\\Program Files\\jrfha\\mphfc.dll\",Compliance"	mph.exe

Enumerates connected drives 3 TTPs 2 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)	\??\a:	mph.exe
File opened (read-only)	\??\b:	mph.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	mph.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\jrfha\mphfc.dll	zknco.exe
File created	\??\c:\Program Files\jrfha\mph.exe	zknco.exe
File opened for modification	\??\c:\Program Files\jrfha\mph.exe	zknco.exe
File opened for modification	\??\c:\Program Files\jrfha	zknco.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2564	3148	WerFault.exe	83

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	zknco.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mph.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.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
4240	PING.EXE
6028	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	mph.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mph.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4240	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3148	mph.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3756	768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe
5044	zknco.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 6028	3756	768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe	79
PID 6028 wrote to memory of 4240	6028	cmd.exe	81
PID 6028 wrote to memory of 5044	6028	cmd.exe	82
PID 5044 wrote to memory of 3148	5044	zknco.exe	83

C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe
"C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\zknco.exe "C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:6028
- - 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:4240
- - C:\Users\Admin\AppData\Local\Temp\zknco.exe
    C:\Users\Admin\AppData\Local\Temp\\zknco.exe "C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.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:5044
  - - \??\c:\Program Files\jrfha\mph.exe
      "c:\Program Files\jrfha\mph.exe" "c:\Program Files\jrfha\mphfc.dll",Compliance C:\Users\Admin\AppData\Local\Temp\zknco.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 use of AdjustPrivilegeToken
      PID:3148
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3148 -s 1532
        5⤵
        Program crash
        
        PID:2564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3148 -ip 3148
1⤵
PID:2008

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

mph.exe

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

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zknco.exe

Path C:\Users\Admin\AppData\Local\Temp\zknco.exe
Size 236KB
SHA256 c3809bc8c339665373b19c5e3c9b24a1bce033442de7068e1d6e8fbfffbfc08a
MD5 8ff7567ad07ae433d559159c85c73b54
SHA1 ccbc895a7a3307c41003c279bcffbe529f5f21af
SHA512 b3018524d8be9dd0ba090dea29db31bf3a70728e5dbdc2c8e3d17ac2207529cd006cf35d54630a26eb03296a83929bd4a22388eae7e14bcac00a33fd45e0c70f
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T189340100D7B2E5E8D44824BA0787D310EAE5DC9E7B736B7143D5E21FAB41F0AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

mphfc.dll

Path \??\c:\Program Files\jrfha\mphfc.dll
Size 141KB
SHA256 6fa75349ea17cc73fd991e43470394f1f889a4aefd694d768c1efff90d87871e
MD5 6ba4a0107f5b5d4e7f2c09892406e5ed
SHA1 23f1fca1193fc121a4886990a4d3287b3001cb00
SHA512 a6de8362c3e3a2ada115ea2a82387bc45c80e1a1f6bac94e35e339559e451cd124f9876d85229c2f70356c6fb4d6dfd7d1090f211b85482d0c9565a55b8618c8
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lS:RGMmfToTJY6zpSyvkGSn1tlS
TLSH
T1D9E302E0F3A7C4B6C265573183937DF3161CF5346B18072EED62A32769394C44B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3148-21-0x0000000000EF0000-0x0000000000F54000-memory.dmp

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memory/3148-20-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3148-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3756-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3756-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3756-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3756-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5044-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5044-15-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5044-8-0x0000000000400000-0x000000000044901D-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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