farfli | a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/08/2026, 11:14

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General

Target
a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.exe
Size 242KB
Sample260801-nb6lrshr5w
SHA256 a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464
MD5 928966d090598ff4781fbc59a235c595
SHA1 29d1049b0771dc5d7d1e3c5de88c9423c6552b73
SHA512 ae63c8024f89ed92b12636a3c65aded23da58717d7c178fbfca6c22c243ec6d69145c930e372186f4b9a1ed240344a1fbd31d5e2199e393c1307e13fb1ca905a
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T166340200D7B2E5E8D44824BA0787D310EAE1DC9E7F73677143D9E31FAB41F1AA4AA194
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/3684-17-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3684-19-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/3684-22-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
5236	igxmwrvmq.exe

Executes dropped EXE 2 IoCs

pid	Process
5236	igxmwrvmq.exe
3684	zstjx.exe

Loads dropped DLL 1 IoCs

pid	Process
3684	zstjx.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\\ghrsjo\\zstjx.exe \"c:\\Program Files\\ghrsjo\\zstjx.dll\",Compliance"	zstjx.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)	\??\v:	zstjx.exe
File opened (read-only)	\??\d:	zstjx.exe
File opened (read-only)	\??\g:	zstjx.exe
File opened (read-only)	\??\o:	zstjx.exe
File opened (read-only)	\??\s:	zstjx.exe
File opened (read-only)	\??\y:	zstjx.exe
File opened (read-only)	\??\i:	zstjx.exe
File opened (read-only)	\??\j:	zstjx.exe
File opened (read-only)	\??\r:	zstjx.exe
File opened (read-only)	\??\x:	zstjx.exe
File opened (read-only)	\??\z:	zstjx.exe
File opened (read-only)	\??\a:	zstjx.exe
File opened (read-only)	\??\h:	zstjx.exe
File opened (read-only)	\??\k:	zstjx.exe
File opened (read-only)	\??\u:	zstjx.exe
File opened (read-only)	\??\w:	zstjx.exe
File opened (read-only)	\??\b:	zstjx.exe
File opened (read-only)	\??\l:	zstjx.exe
File opened (read-only)	\??\m:	zstjx.exe
File opened (read-only)	\??\n:	zstjx.exe
File opened (read-only)	\??\p:	zstjx.exe
File opened (read-only)	\??\q:	zstjx.exe
File opened (read-only)	\??\t:	zstjx.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	zstjx.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\ghrsjo	igxmwrvmq.exe
File created	\??\c:\Program Files\ghrsjo\zstjx.dll	igxmwrvmq.exe
File created	\??\c:\Program Files\ghrsjo\zstjx.exe	igxmwrvmq.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
5068	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	a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.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	igxmwrvmq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zstjx.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
5068	cmd.exe
4784	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	zstjx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	zstjx.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4784	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3684	zstjx.exe
3684	zstjx.exe
3684	zstjx.exe
3684	zstjx.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3684	zstjx.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4148	a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.exe
5236	igxmwrvmq.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 5068	4148	a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.exe	89
PID 5068 wrote to memory of 4784	5068	cmd.exe	91
PID 5068 wrote to memory of 5236	5068	cmd.exe	92
PID 5236 wrote to memory of 3684	5236	igxmwrvmq.exe	93

C:\Users\Admin\AppData\Local\Temp\a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.exe
"C:\Users\Admin\AppData\Local\Temp\a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\igxmwrvmq.exe "C:\Users\Admin\AppData\Local\Temp\a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.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:5068
- - 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:4784
- - C:\Users\Admin\AppData\Local\Temp\igxmwrvmq.exe
    C:\Users\Admin\AppData\Local\Temp\\igxmwrvmq.exe "C:\Users\Admin\AppData\Local\Temp\a7d9bccc38db96772e98a57b9660d292ccb44ae04f0082e1523586cc8bf7a464.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:5236
  - - \??\c:\Program Files\ghrsjo\zstjx.exe
      "c:\Program Files\ghrsjo\zstjx.exe" "c:\Program Files\ghrsjo\zstjx.dll",Compliance C:\Users\Admin\AppData\Local\Temp\igxmwrvmq.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:3684

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

zstjx.exe

Path C:\Program Files\ghrsjo\zstjx.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

igxmwrvmq.exe

Path C:\Users\Admin\AppData\Local\Temp\igxmwrvmq.exe
Size 242KB
SHA256 d9f7c65a861db04c89b8d7968b98f9a5f637b3425148e8f729e7036283c3b7c2
MD5 4d36e4f1302e9a64dbccbaf2ab56f22a
SHA1 1cbf1f74f44d60f73a9f587836bbc9d8825fe387
SHA512 8d969cbcc9d72d49a86210e7d99c4f7a1fef5512cc72f1e3a212bf2aec45187449b5c2c7f83f0a4580541aae74ca527f5130fd09b0e344eb5ba0b9c371100a2f
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T171340200D7B2E5E8D44824BA0787D310EAE1DC9E7F73677143D9E31FAB41F1AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

zstjx.dll

Path \??\c:\Program Files\ghrsjo\zstjx.dll
Size 141KB
SHA256 d6d3067d7a785c03728ffae9b398de54486a83c055965cd7dff083c9d8f6bc5d
MD5 081ab8cdd1e745afab88d1b2dfa95aaa
SHA1 ee85c4b104389c18182eafcb8b55399bc87d2339
SHA512 8afc3515537855b1cb6fba67a93a7b4c972da890f108dc3094c132615d06c829c44b981f7316d726fd7a64d0e4abccc6b7c70a7a3a23801ca79193323f896ede
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lf:RGMmfToTJY6zpSyvkGSn1tlf
TLSH
T19FE312E0F3A7C4B6C269573183937DF3161CF5346B18072AED62A32769394C44B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3684-22-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3684-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3684-17-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3684-16-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4148-5-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4148-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4148-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4148-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5236-13-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5236-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5236-9-0x0000000000400000-0x000000000044901D-memory.dmp

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