farfli | 9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
09/05/2026, 09:53

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General

Target
9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.exe
Size 235KB
Sample260509-lwt3cset7w
SHA256 9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362
MD5 9bc86aa250e34ca0d84934b23d14acae
SHA1 2030bb8867f2c0e2d93f64365f10de92d57f0d6c
SHA512 cbbc6f2a2996f015f63fd84f4c51914c1490af156b232ea36fb06b091ae7d0d81631275f794d83aa9ba61b3f7c489b99576b12be64c8b46837a553424b814bed
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T15B340200D7B2E5E8D44824BA0787D310EAE1DCDE7B736B7143D5E31FAB41F0AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery 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 2 IoCs

resource	yara_rule
behavioral1/memory/4356-22-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral1/memory/4356-27-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
2360	hdbor.exe

Executes dropped EXE 2 IoCs

pid	Process
2360	hdbor.exe
4356	mqc.exe

Loads dropped DLL 1 IoCs

pid	Process
4356	mqc.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-1-5-21-721190819-434563495-2007910846-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\zzirbuc\\mqc.exe \"c:\\Program Files\\zzirbuc\\mqcae.dll\",Compliance"	mqc.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)	\??\a:	mqc.exe
File opened (read-only)	\??\e:	mqc.exe
File opened (read-only)	\??\g:	mqc.exe
File opened (read-only)	\??\j:	mqc.exe
File opened (read-only)	\??\m:	mqc.exe
File opened (read-only)	\??\o:	mqc.exe
File opened (read-only)	\??\r:	mqc.exe
File opened (read-only)	\??\s:	mqc.exe
File opened (read-only)	\??\k:	mqc.exe
File opened (read-only)	\??\l:	mqc.exe
File opened (read-only)	\??\q:	mqc.exe
File opened (read-only)	\??\t:	mqc.exe
File opened (read-only)	\??\u:	mqc.exe
File opened (read-only)	\??\y:	mqc.exe
File opened (read-only)	\??\b:	mqc.exe
File opened (read-only)	\??\h:	mqc.exe
File opened (read-only)	\??\p:	mqc.exe
File opened (read-only)	\??\w:	mqc.exe
File opened (read-only)	\??\z:	mqc.exe
File opened (read-only)	\??\i:	mqc.exe
File opened (read-only)	\??\n:	mqc.exe
File opened (read-only)	\??\v:	mqc.exe
File opened (read-only)	\??\x:	mqc.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	mqc.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\zzirbuc	hdbor.exe
File created	\??\c:\Program Files\zzirbuc\mqcae.dll	hdbor.exe
File created	\??\c:\Program Files\zzirbuc\mqc.exe	hdbor.exe
File opened for modification	\??\c:\Program Files\zzirbuc\mqc.exe	hdbor.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hdbor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mqc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2644	cmd.exe
6100	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	mqc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mqc.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
6100	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4356	mqc.exe
4356	mqc.exe
4356	mqc.exe
4356	mqc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	mqc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4372	9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.exe
2360	hdbor.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4372 wrote to memory of 2644	4372	9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.exe	86
PID 2644 wrote to memory of 6100	2644	cmd.exe	88
PID 2644 wrote to memory of 2360	2644	cmd.exe	89
PID 2360 wrote to memory of 4356	2360	hdbor.exe	90

C:\Users\Admin\AppData\Local\Temp\9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.exe
"C:\Users\Admin\AppData\Local\Temp\9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4372
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hdbor.exe "C:\Users\Admin\AppData\Local\Temp\9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2644
- - 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:6100
- - C:\Users\Admin\AppData\Local\Temp\hdbor.exe
    C:\Users\Admin\AppData\Local\Temp\\hdbor.exe "C:\Users\Admin\AppData\Local\Temp\9721b6cb0810815c6eb49a5ae3223d84a8644c773c0cd8d1162abaf4270cb362.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:2360
  - - \??\c:\Program Files\zzirbuc\mqc.exe
      "c:\Program Files\zzirbuc\mqc.exe" "c:\Program Files\zzirbuc\mqcae.dll",Compliance C:\Users\Admin\AppData\Local\Temp\hdbor.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:4356

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

mqcae.dll

Path C:\Program Files\zzirbuc\mqcae.dll
Size 141KB
SHA256 f555ce1aa44db8dda01084a24622b27c7422796157fb4ecf6841cb7f1addb61c
MD5 758d3a8b107d8df4f443b27575aab563
SHA1 59884ac121fffc062538704ad44b3625bca976f9
SHA512 5fa65ddf79bdda074605ba00bd4962e33ca6c828b162b836028d1ef8258cda045fda3deb2c8a227daae37ab55ece9a56fc0601b5539e667edff263bc75cf5f5f
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4lQ9:RGMmfToTJY6zpSyvkGSn1tlg
TLSH
T100E312E0E3A7C4B6C269573183937DF3161CF5346B18072EED62A32769394C44B9DB1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

hdbor.exe

Path C:\Users\Admin\AppData\Local\Temp\hdbor.exe
Size 235KB
SHA256 2f86764077f84616e3954ac25f75aaec4420570c8e37eeceaf4bd1570c9adcbb
MD5 eb91dc5152bd15b3e159c4457de395ca
SHA1 a09f06338cd6137153872a159a4e36c2097cce83
SHA512 11f53eb009756950c92ca0aed5bcfce1536450985e93274c113f58db14a7c8b7a73bdf2e6451e65ed53ba1c7d06d3929d126ca6b6cd1aefe354cc4ab932f7b8e
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFKg:X2vnSwjaOcADw9cUeCOfJ
TLSH
T11D340200D7B2E5E8D44824BA0787D310EAE1DCDE7B736B7143D5E31FAB41F1AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

mqc.exe

Path \??\c:\Program Files\zzirbuc\mqc.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/2360-18-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2360-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2360-10-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2360-16-0x0000000002110000-0x0000000002185000-memory.dmp

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memory/4356-21-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4356-22-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4356-23-0x00000000031F0000-0x00000000032C3000-memory.dmp

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memory/4356-27-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4372-5-0x0000000000940000-0x00000000009B5000-memory.dmp

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memory/4372-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4372-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4372-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4372-0-0x0000000000400000-0x000000000044901D-memory.dmp

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