farfli | 372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
10/08/2026, 10:39

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General

Target
372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.exe
Size 197KB
Sample260810-mqdnvsfe75
SHA256 372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29
MD5 9badaf1ddb9e33b7eb8f8113e0981f5d
SHA1 851c87ca73dbbd0f04b45454cfa8d008058ad496
SHA512 4ce6a452f680ab9e4fa40278d4d8e2d22810ab2904040b54a4541f35c67be6ec43fda2123facd05226019f210eea252e4c2779319fe209c98f3e296715af41b4
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTO:X2vnSwjaOcADw9cUeCOfA
TLSH
T103141200DFA461E8D498607B0AC37321EBF29ACDEB735BF152D6D13B9F51F162859890
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 3 IoCs

resource	yara_rule
behavioral1/memory/5496-20-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral1/memory/5496-22-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral1/memory/5496-25-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
5696	znksn.exe

Executes dropped EXE 2 IoCs

pid	Process
5696	znksn.exe
5496	xzf.exe

Loads dropped DLL 1 IoCs

pid	Process
5496	xzf.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-1-5-21-3053180483-1881419501-3594244048-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\oitrj\\xzf.exe \"c:\\Program Files\\oitrj\\xzfrz.dll\",Compliance"	xzf.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)	\??\l:	xzf.exe
File opened (read-only)	\??\o:	xzf.exe
File opened (read-only)	\??\x:	xzf.exe
File opened (read-only)	\??\b:	xzf.exe
File opened (read-only)	\??\i:	xzf.exe
File opened (read-only)	\??\j:	xzf.exe
File opened (read-only)	\??\s:	xzf.exe
File opened (read-only)	\??\t:	xzf.exe
File opened (read-only)	\??\v:	xzf.exe
File opened (read-only)	\??\z:	xzf.exe
File opened (read-only)	\??\h:	xzf.exe
File opened (read-only)	\??\w:	xzf.exe
File opened (read-only)	\??\y:	xzf.exe
File opened (read-only)	\??\e:	xzf.exe
File opened (read-only)	\??\k:	xzf.exe
File opened (read-only)	\??\m:	xzf.exe
File opened (read-only)	\??\n:	xzf.exe
File opened (read-only)	\??\p:	xzf.exe
File opened (read-only)	\??\q:	xzf.exe
File opened (read-only)	\??\r:	xzf.exe
File opened (read-only)	\??\u:	xzf.exe
File opened (read-only)	\??\a:	xzf.exe
File opened (read-only)	\??\g:	xzf.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	xzf.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\oitrj\xzf.exe	znksn.exe
File opened for modification	\??\c:\Program Files\oitrj\xzf.exe	znksn.exe
File opened for modification	\??\c:\Program Files\oitrj	znksn.exe
File created	\??\c:\Program Files\oitrj\xzfrz.dll	znksn.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
2060	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	372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.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	znksn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xzf.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
2060	cmd.exe
2472	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	xzf.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	xzf.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2472	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5496	xzf.exe
5496	xzf.exe
5496	xzf.exe
5496	xzf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5496	xzf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1304	372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.exe
5696	znksn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1304 wrote to memory of 2060	1304	372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.exe	86
PID 2060 wrote to memory of 2472	2060	cmd.exe	88
PID 2060 wrote to memory of 5696	2060	cmd.exe	89
PID 5696 wrote to memory of 5496	5696	znksn.exe	90

C:\Users\Admin\AppData\Local\Temp\372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.exe
"C:\Users\Admin\AppData\Local\Temp\372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1304
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\znksn.exe "C:\Users\Admin\AppData\Local\Temp\372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.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:2060
- - 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:2472
- - C:\Users\Admin\AppData\Local\Temp\znksn.exe
    C:\Users\Admin\AppData\Local\Temp\\znksn.exe "C:\Users\Admin\AppData\Local\Temp\372062d98c722f3c41d6ca93946e671bed42022d3d2b41c12f5dc7bcd5032b29.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:5696
  - - \??\c:\Program Files\oitrj\xzf.exe
      "c:\Program Files\oitrj\xzf.exe" "c:\Program Files\oitrj\xzfrz.dll",Compliance C:\Users\Admin\AppData\Local\Temp\znksn.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:5496

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

xzfrz.dll

Path C:\Program Files\oitrj\xzfrz.dll
Size 141KB
SHA256 f860a9764fe7d4d2b039504dad21173078c83838a5e7ffff2691432c55284729
MD5 a85cdf35852e52fa1b951b2cab3d3744
SHA1 13b7a0b8e89c02fb0990f03727b6eaa79b8d2ac9
SHA512 5d17e0493e4b9cd4eb8acb765ae53b12f84d1da4ed6d432f9659e96936f5f6edbfbbe455cc68dfdb5a83b7ac2f2996636cecf44d0013712f5dcfd5bac54fffce
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lS:RGMmfToTJY6zpSyvkGSn1tlS
TLSH
T1A7E302E0E3A7C4B6C2695B3187937DF3161CF4346B18072EED62A32769394C44B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

znksn.exe

Path C:\Users\Admin\AppData\Local\Temp\znksn.exe
Size 197KB
SHA256 fb4b4a3f3a3d040b61d5ec4a0b3620e32cd27728694b01abed004e49834e9ced
MD5 0d17122f6ff2dd00820b0046714030d6
SHA1 9d723230b9dfa3056e50310c78f542f6ca7f5ca2
SHA512 d02ba7fad0e4d6de18a148894978e654904608d515a2ead1f3435bbfc0a1a24019ffa02667aae63916a9e4dd70f1c04974c2d54da802a860aa2a0d82e58884ca
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTg:X2vnSwjaOcADw9cUeCOf2
TLSH
T12A141200DBA461E8D498607B0AC37321EBF29ACDEB735BF152D6D13BAF51F162819890
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

xzf.exe

Path \??\c:\Program Files\oitrj\xzf.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1304-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1304-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1304-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1304-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5496-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5496-20-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5496-22-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5496-25-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5696-16-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5696-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5696-9-0x0000000000400000-0x000000000044901D-memory.dmp

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