farfli | b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
26/08/2026, 10:44

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General

Target
b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.exe
Size 238KB
Sample260826-mtaflsck5z
SHA256 b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598
MD5 43ddd7ae9802a9b286fb1c39f42bb836
SHA1 a9e96a0398a27ccfd3b48d3f6a724679dd8e3a99
SHA512 da4a97f5fe31688521e14b708428fe746f453d82b066581f5c5d0d313798aa6a33deeca2edb763a9ba21969dff7c2b1e8571caf41874b7244e2d48bfdeeb9035
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T1D9340200D7B2E9E8D44824B60787D310EAE1DCDE7B73677143D5E31FAB41F1AA4AA194
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/1096-16-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/1096-18-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral2/memory/1096-21-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
5836	qqjzi.exe

Executes dropped EXE 2 IoCs

pid	Process
5836	qqjzi.exe
1096	grn.exe

Loads dropped DLL 1 IoCs

pid	Process
1096	grn.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\\iauyg\\grn.exe \"c:\\Program Files\\iauyg\\grnqj.dll\",Compliance"	grn.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)	\??\m:	grn.exe
File opened (read-only)	\??\p:	grn.exe
File opened (read-only)	\??\q:	grn.exe
File opened (read-only)	\??\u:	grn.exe
File opened (read-only)	\??\w:	grn.exe
File opened (read-only)	\??\y:	grn.exe
File opened (read-only)	\??\a:	grn.exe
File opened (read-only)	\??\d:	grn.exe
File opened (read-only)	\??\g:	grn.exe
File opened (read-only)	\??\h:	grn.exe
File opened (read-only)	\??\k:	grn.exe
File opened (read-only)	\??\n:	grn.exe
File opened (read-only)	\??\s:	grn.exe
File opened (read-only)	\??\b:	grn.exe
File opened (read-only)	\??\i:	grn.exe
File opened (read-only)	\??\r:	grn.exe
File opened (read-only)	\??\v:	grn.exe
File opened (read-only)	\??\z:	grn.exe
File opened (read-only)	\??\j:	grn.exe
File opened (read-only)	\??\l:	grn.exe
File opened (read-only)	\??\o:	grn.exe
File opened (read-only)	\??\t:	grn.exe
File opened (read-only)	\??\x:	grn.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	grn.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\iauyg\grnqj.dll	qqjzi.exe
File created	\??\c:\Program Files\iauyg\grn.exe	qqjzi.exe
File opened for modification	\??\c:\Program Files\iauyg	qqjzi.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
1380	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	grn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.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	qqjzi.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
1380	cmd.exe
1120	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	grn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	grn.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1120	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1096	grn.exe
1096	grn.exe
1096	grn.exe
1096	grn.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1096	grn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3288	b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.exe
5836	qqjzi.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 1380	3288	b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.exe	88
PID 1380 wrote to memory of 1120	1380	cmd.exe	90
PID 1380 wrote to memory of 5836	1380	cmd.exe	91
PID 5836 wrote to memory of 1096	5836	qqjzi.exe	92

C:\Users\Admin\AppData\Local\Temp\b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.exe
"C:\Users\Admin\AppData\Local\Temp\b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qqjzi.exe "C:\Users\Admin\AppData\Local\Temp\b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.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:1380
- - 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:1120
- - C:\Users\Admin\AppData\Local\Temp\qqjzi.exe
    C:\Users\Admin\AppData\Local\Temp\\qqjzi.exe "C:\Users\Admin\AppData\Local\Temp\b50add233ac5ffaf32e65df6a1681531dec702f31f3276fccb927c143a844598.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:5836
  - - \??\c:\Program Files\iauyg\grn.exe
      "c:\Program Files\iauyg\grn.exe" "c:\Program Files\iauyg\grnqj.dll",Compliance C:\Users\Admin\AppData\Local\Temp\qqjzi.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:1096

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

grn.exe

Path C:\Program Files\iauyg\grn.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

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qqjzi.exe

Path C:\Users\Admin\AppData\Local\Temp\qqjzi.exe
Size 238KB
SHA256 54fb33ffd48f9cbc7ce2caed4f20dbf4cedc9fd1688adc3c9a6d241df5cb4ac9
MD5 7f9c8b149228d1fdc8ffdb86830e9eff
SHA1 17893b2e665f9944f4d43d6edcce2fae6ffce3f9
SHA512 58146a0f7a251ae471621902ed77779f2f7e407750d4dd6320e83d366362a90c27b33e4e3678e18d545fc349b060f94c48da4b5619f2d9c409e61b2576bcda23
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK7:X2vnSwjaOcADw9cUeCOf6
TLSH
T195340200D7B2E9E8D44824B60787D310EAE1DCDE7B73677143D5E31FAB81F1AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

grnqj.dll

Path \??\c:\Program Files\iauyg\grnqj.dll
Size 141KB
SHA256 8eefff386a0a859a60d95049686a05927c344ec82ca5714cfaf46cf5a8895b65
MD5 4feef67b747ca79ede4e5b7e274e72cb
SHA1 ad2cb9e8da07c4a86f0575937b7dfd184454b43f
SHA512 8f565cd8d2995b66c9c8098a6f374c86a3b86b0b8e53de88aa198af9e99c274c8e5acabd137594a9867e0d03b41a6540c87b7c45ea976e093e97e7edb99d701c
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lI:RGMmfToTJY6zpSyvkGSn1tlI
TLSH
T1B9E302E0E3A7C4B6C269573183937DF3162CF5346B18072EFD62A32769394C44B9DA1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1096-21-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1096-18-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1096-16-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/1096-15-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/3288-5-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3288-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3288-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/3288-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5836-12-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5836-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/5836-8-0x0000000000400000-0x000000000044901D-memory.dmp

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