farfli | 87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb

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
09/08/2026, 09:17

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General

Target
87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.exe
Size 201KB
Sample260809-k9eddsvcle
SHA256 87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb
MD5 02066b95b0b2a387d0cbacec3b93656f
SHA1 c5f208d8775d53eb2b8b17f67952bb5f8b8cfe4c
SHA512 e062fbf8a4ecdea9b9e9b671e7aae497206bbfe969b4ac520281926ad32f460bf31b9b14f881cb783ecadf78adf29821a0288b47dc22d131419d7327be97d2b8
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
TLSH
T15E141200DBB4A1E8D498607B0AC3A311F7F29ACEAB735BF152D6D22F9F41F162459890
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
behavioral2/memory/5816-17-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/5816-19-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/5816-24-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
3076	dkzxryw.exe

Executes dropped EXE 2 IoCs

pid	Process
3076	dkzxryw.exe
5816	qosanty.exe

Loads dropped DLL 1 IoCs

pid	Process
5816	qosanty.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\\ypuivjvjy\\qosanty.exe \"c:\\Program Files\\ypuivjvjy\\qosanty.dll\",Compliance"	qosanty.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)	\??\g:	qosanty.exe
File opened (read-only)	\??\s:	qosanty.exe
File opened (read-only)	\??\u:	qosanty.exe
File opened (read-only)	\??\y:	qosanty.exe
File opened (read-only)	\??\z:	qosanty.exe
File opened (read-only)	\??\p:	qosanty.exe
File opened (read-only)	\??\a:	qosanty.exe
File opened (read-only)	\??\b:	qosanty.exe
File opened (read-only)	\??\d:	qosanty.exe
File opened (read-only)	\??\i:	qosanty.exe
File opened (read-only)	\??\m:	qosanty.exe
File opened (read-only)	\??\t:	qosanty.exe
File opened (read-only)	\??\h:	qosanty.exe
File opened (read-only)	\??\n:	qosanty.exe
File opened (read-only)	\??\w:	qosanty.exe
File opened (read-only)	\??\x:	qosanty.exe
File opened (read-only)	\??\o:	qosanty.exe
File opened (read-only)	\??\q:	qosanty.exe
File opened (read-only)	\??\j:	qosanty.exe
File opened (read-only)	\??\k:	qosanty.exe
File opened (read-only)	\??\l:	qosanty.exe
File opened (read-only)	\??\r:	qosanty.exe
File opened (read-only)	\??\v:	qosanty.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	qosanty.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\ypuivjvjy\qosanty.dll	dkzxryw.exe
File created	\??\c:\Program Files\ypuivjvjy\qosanty.exe	dkzxryw.exe
File opened for modification	\??\c:\Program Files\ypuivjvjy	dkzxryw.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
4400	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	dkzxryw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qosanty.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
4400	cmd.exe
4896	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	qosanty.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	qosanty.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4896	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5816	qosanty.exe
5816	qosanty.exe
5816	qosanty.exe
5816	qosanty.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5816	qosanty.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4708	87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.exe
3076	dkzxryw.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 4400	4708	87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.exe	89
PID 4400 wrote to memory of 4896	4400	cmd.exe	91
PID 4400 wrote to memory of 3076	4400	cmd.exe	92
PID 3076 wrote to memory of 5816	3076	dkzxryw.exe	93

C:\Users\Admin\AppData\Local\Temp\87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.exe
"C:\Users\Admin\AppData\Local\Temp\87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dkzxryw.exe "C:\Users\Admin\AppData\Local\Temp\87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.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:4400
- - 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:4896
- - C:\Users\Admin\AppData\Local\Temp\dkzxryw.exe
    C:\Users\Admin\AppData\Local\Temp\\dkzxryw.exe "C:\Users\Admin\AppData\Local\Temp\87aa4ffebbc5208dd1fa3cb8bc790bb9bda51cc21f43cd91781305ee4b2c2ceb.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:3076
  - - \??\c:\Program Files\ypuivjvjy\qosanty.exe
      "c:\Program Files\ypuivjvjy\qosanty.exe" "c:\Program Files\ypuivjvjy\qosanty.dll",Compliance C:\Users\Admin\AppData\Local\Temp\dkzxryw.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:5816

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

qosanty.exe

Path C:\Program Files\ypuivjvjy\qosanty.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

dkzxryw.exe

Path C:\Users\Admin\AppData\Local\Temp\dkzxryw.exe
Size 201KB
SHA256 450b608ef7c5005ccb415203145720a04b7da98012752806034be0e7af055ab1
MD5 b9e080b879e7407f60e4a2aaa14ba697
SHA1 b9fefcb53cec6d3a50b7a6b29e54371634b06972
SHA512 338e14ed6e166c3a402733e86831b825c322115953ddb997bf0280524348ccad3d89df28eeae3caf1c6c81c2d3232695aa7dd292fab60e6317ebd464bdaf37d7
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTz:X2vnSwjaOcADw9cUeCOfV
TLSH
T1C9141300CBB4A1E8D498647B0AC3A311EBF2DACDBB735BF152D6D22F9F41F162459990
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

qosanty.dll

Path \??\c:\Program Files\ypuivjvjy\qosanty.dll
Size 141KB
SHA256 91c5dd2cf015705a7d5252475531630bcee62725792f2fee773c369259db9ca2
MD5 93e0c6d78f3fcc2941d586c55c070590
SHA1 32e93bdd8698984bd51e50a23f9b43b50d7ced38
SHA512 b92cbc669bf5b5750b307c2c4d68a1b8e3462b42e82f2858dfdd04b0ad6d0434a668f6b259e7ad39e9dd35cbf03f094e0f3d6012d83cfeb063905470306e9bc7
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4ln:RGMmfToTJY6zpSyvkGSn1tln
TLSH
T1B3E312E0E3A7C4B6C269573183937DF3162CF5346B18072AED62A32769394C44B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3076-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3076-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3076-13-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4708-5-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4708-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4708-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4708-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5816-16-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5816-17-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5816-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/5816-24-0x0000000010000000-0x000000001004E000-memory.dmp

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