farfli | 6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3

Analysis

max time kernel
148s
max time network
140s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
22/08/2026, 18:35

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General

Target
6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.exe
Size 198KB
Sample260822-w8a55axgrc
SHA256 6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3
MD5 c28128368e3e6090bd96c639c0616a34
SHA1 a214e36702f002b7e5f937508aa6eb4ac21df91d
SHA512 ff7dec91f1a0044573df2cd997e1186aaf053145fc5505a5fb168b4149615879e7322d868d30419b382aa11b69579fe5f0f235e1c0a816101e153a570a33b910
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkT:X2vnSwjaOcADw9cUeCOf
TLSH
T15F141200DBA461E8D498747A0AC37321EBF29ACDEB735BF152D6D23B9F51F162819890
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 4 IoCs

resource	yara_rule
behavioral2/memory/1564-16-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/1564-17-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/1564-19-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/1564-22-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
1820	epvahz.exe

Executes dropped EXE 2 IoCs

pid	Process
1820	epvahz.exe
1564	iduuo.exe

Loads dropped DLL 1 IoCs

pid	Process
1564	iduuo.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\\qebxrcmej\\iduuo.exe \"c:\\Program Files\\qebxrcmej\\gusjvl.dll\",Compliance"	iduuo.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)	\??\j:	iduuo.exe
File opened (read-only)	\??\t:	iduuo.exe
File opened (read-only)	\??\d:	iduuo.exe
File opened (read-only)	\??\h:	iduuo.exe
File opened (read-only)	\??\k:	iduuo.exe
File opened (read-only)	\??\l:	iduuo.exe
File opened (read-only)	\??\s:	iduuo.exe
File opened (read-only)	\??\x:	iduuo.exe
File opened (read-only)	\??\y:	iduuo.exe
File opened (read-only)	\??\i:	iduuo.exe
File opened (read-only)	\??\m:	iduuo.exe
File opened (read-only)	\??\p:	iduuo.exe
File opened (read-only)	\??\v:	iduuo.exe
File opened (read-only)	\??\g:	iduuo.exe
File opened (read-only)	\??\n:	iduuo.exe
File opened (read-only)	\??\o:	iduuo.exe
File opened (read-only)	\??\q:	iduuo.exe
File opened (read-only)	\??\r:	iduuo.exe
File opened (read-only)	\??\u:	iduuo.exe
File opened (read-only)	\??\w:	iduuo.exe
File opened (read-only)	\??\z:	iduuo.exe
File opened (read-only)	\??\a:	iduuo.exe
File opened (read-only)	\??\b:	iduuo.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	iduuo.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\qebxrcmej	epvahz.exe
File created	\??\c:\Program Files\qebxrcmej\gusjvl.dll	epvahz.exe
File created	\??\c:\Program Files\qebxrcmej\iduuo.exe	epvahz.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
5776	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	6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.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	epvahz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iduuo.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
4432	PING.EXE
5776	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	iduuo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	iduuo.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4432	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1564	iduuo.exe
1564	iduuo.exe
1564	iduuo.exe
1564	iduuo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1564	iduuo.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5956	6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.exe
1820	epvahz.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5956 wrote to memory of 5776	5956	6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.exe	89
PID 5776 wrote to memory of 4432	5776	cmd.exe	91
PID 5776 wrote to memory of 1820	5776	cmd.exe	92
PID 1820 wrote to memory of 1564	1820	epvahz.exe	93

C:\Users\Admin\AppData\Local\Temp\6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.exe
"C:\Users\Admin\AppData\Local\Temp\6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5956
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\epvahz.exe "C:\Users\Admin\AppData\Local\Temp\6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.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:5776
- - 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:4432
- - C:\Users\Admin\AppData\Local\Temp\epvahz.exe
    C:\Users\Admin\AppData\Local\Temp\\epvahz.exe "C:\Users\Admin\AppData\Local\Temp\6e0f5930d83997ecab6e495140a886e27580b8145523ea4d2f723eeef96199a3.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:1820
  - - \??\c:\Program Files\qebxrcmej\iduuo.exe
      "c:\Program Files\qebxrcmej\iduuo.exe" "c:\Program Files\qebxrcmej\gusjvl.dll",Compliance C:\Users\Admin\AppData\Local\Temp\epvahz.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:1564

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

iduuo.exe

Path C:\Program Files\qebxrcmej\iduuo.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

epvahz.exe

Path C:\Users\Admin\AppData\Local\Temp\epvahz.exe
Size 198KB
SHA256 bcfd8c3b65245588529e3a136c8f7d42d5c9ea29c5fb452c056b339b3acade35
MD5 a9665df966d9d243ffe48a47912e5c88
SHA1 a268d10ae5d53b5a07d8dd3752615c05a4b6a4b6
SHA512 52f894ce11f8e89cca58fee6aa9841f11417f075b31938e5178bd3634ffc6f80d1e8c8375f4e4d0f500be87b521e40ccf06dba5e6ff2a6fcd1c1aa886ad332d2
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTo:X2vnSwjaOcADw9cUeCOfS
TLSH
T1FA141200DBA461E8D498747A0AC37321FBF29ACDEB735BF152D6D23B9F51F162819890
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

gusjvl.dll

Path \??\c:\Program Files\qebxrcmej\gusjvl.dll
Size 141KB
SHA256 da626e676ae4f72bf86ca1a2ac6b221732e10d7f011158623602edb746f9be10
MD5 45e9dbead6ba2041a47a7f00d645a57e
SHA1 e8bbc0cf9d6f19d33a28ed05eb766ec662fe5fe1
SHA512 fe3ef2d1d875d6d3ba473ef79ca2af796493c9a6c708e0b99cd2329fe88e439367917685ab61922a5b3ab6ab4149c6800885137f23fb62ea76c17314d29072f4
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4l5:RGMmfToTJY6zpSyvkGSn1tl5
TLSH
T1C0E312E0E3A7C4B6C265573143937DF3162CF5346B18072EFD62A32769394C84B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1564-22-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1564-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1564-17-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1564-16-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1820-8-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1820-13-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/1820-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5956-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5956-5-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5956-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5956-2-0x0000000000400000-0x000000000044901D-memory.dmp

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