farfli | 9b84c87df9dace7e103d05310c82062f39bc14f94dfdc5f0c8607b9bc86e7144

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
29/07/2026, 11:16

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General

Target
2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.exe
Size 234KB
Sample260729-ndfhcssfjd
SHA256 9b84c87df9dace7e103d05310c82062f39bc14f94dfdc5f0c8607b9bc86e7144
MD5 24ce22d900797d7255653aee207dfb70
SHA1 1b4399a675a19b34ed004cf50a6352d027a67285
SHA512 35db7fe71650cb73290a883deb1efe911d420ff29258e8e03b35d6e7af90c9458d90aeb82bdbd0fbf4cdf2922067d355e718da33939b4365a6648259fc46ae3e
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T15F34F18136A5CD77F0621B7E4D7B163A8537BE691B00B48BD3C4AD4FB4319E46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

98.126.40.18:3204
http://98.126.40.19:805/index.php
http://98.126.40.20:803/

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/4188-15-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral1/memory/4188-18-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/4188-15-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4188-18-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1632-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/memory/1632-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/files/0x000b0000000242ee-4.dat	UPX
behavioral1/memory/1008-13-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
1008	hzrmlyxvb.exe

Executes dropped EXE 2 IoCs

pid	Process
1008	hzrmlyxvb.exe
4188	fsq.exe

Loads dropped DLL 1 IoCs

pid	Process
4188	fsq.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-1-5-21-1788976790-1541110888-1636651838-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\wqkux\\fsq.exe \"c:\\Program Files\\wqkux\\fsqgy.dll\",Interface"	fsq.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)	\??\k:	fsq.exe
File opened (read-only)	\??\o:	fsq.exe
File opened (read-only)	\??\r:	fsq.exe
File opened (read-only)	\??\u:	fsq.exe
File opened (read-only)	\??\w:	fsq.exe
File opened (read-only)	\??\y:	fsq.exe
File opened (read-only)	\??\l:	fsq.exe
File opened (read-only)	\??\m:	fsq.exe
File opened (read-only)	\??\x:	fsq.exe
File opened (read-only)	\??\q:	fsq.exe
File opened (read-only)	\??\t:	fsq.exe
File opened (read-only)	\??\v:	fsq.exe
File opened (read-only)	\??\z:	fsq.exe
File opened (read-only)	\??\b:	fsq.exe
File opened (read-only)	\??\e:	fsq.exe
File opened (read-only)	\??\g:	fsq.exe
File opened (read-only)	\??\h:	fsq.exe
File opened (read-only)	\??\j:	fsq.exe
File opened (read-only)	\??\n:	fsq.exe
File opened (read-only)	\??\p:	fsq.exe
File opened (read-only)	\??\s:	fsq.exe
File opened (read-only)	\??\a:	fsq.exe
File opened (read-only)	\??\i:	fsq.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	fsq.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\wqkux\fsqgy.dll	hzrmlyxvb.exe
File created	\??\c:\Program Files\wqkux\fsq.exe	hzrmlyxvb.exe
File opened for modification	\??\c:\Program Files\wqkux\fsq.exe	hzrmlyxvb.exe
File opened for modification	\??\c:\Program Files\wqkux	hzrmlyxvb.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
4852	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	hzrmlyxvb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fsq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.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
4852	cmd.exe
3040	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	fsq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fsq.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3040	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4188	fsq.exe
4188	fsq.exe
4188	fsq.exe
4188	fsq.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4188	fsq.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1632	2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.exe
1008	hzrmlyxvb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 4852	1632	2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.exe	84
PID 4852 wrote to memory of 3040	4852	cmd.exe	86
PID 4852 wrote to memory of 1008	4852	cmd.exe	87
PID 1008 wrote to memory of 4188	1008	hzrmlyxvb.exe	88

C:\Users\Admin\AppData\Local\Temp\2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hzrmlyxvb.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.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:4852
- - 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:3040
- - C:\Users\Admin\AppData\Local\Temp\hzrmlyxvb.exe
    C:\Users\Admin\AppData\Local\Temp\\hzrmlyxvb.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-29_24ce22d900797d7255653aee207dfb70_coinminer_elex_wannacry.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:1008
  - - \??\c:\Program Files\wqkux\fsq.exe
      "c:\Program Files\wqkux\fsq.exe" "c:\Program Files\wqkux\fsqgy.dll",Interface C:\Users\Admin\AppData\Local\Temp\hzrmlyxvb.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:4188

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

fsq.exe

Path C:\Program Files\wqkux\fsq.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

hzrmlyxvb.exe

Path C:\Users\Admin\AppData\Local\Temp\hzrmlyxvb.exe
Size 234KB
SHA256 d69e3fb92c034fce36fa3ed21ea67861e58dccb3f7f86c02a2382502b522b521
MD5 3670ddf41c50ead911e64a1056a0a7ef
SHA1 872b41418ebb8a3b4d04a74b3aceed8f0b5ef465
SHA512 18d7de7bb34160f0d5e75f650cde59ab3fab3d8117c98fb255462772cb8deb26ef6268f9c873f1dfe2ab6d5933bcc53f95bd481d4a01aef2e7d76fdbac020138
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocB:tgmYA/nsYf8QdsINkZ6CQetFH
TLSH
T1F734F18136A5CD77F0221B7E4D7B163B8536BE691B00749BD3C4AD4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

fsqgy.dll

Path \??\c:\Program Files\wqkux\fsqgy.dll
Size 168KB
SHA256 6628f40126e215d285a017c1aa2a44b072fd5fbb0ddee5e86968e90b19afe6a8
MD5 44b3f84aa382f1972bbf85f6916fcc1c
SHA1 e19651c13b305b6b649d8c05c4288f622ff0b4aa
SHA512 042ea6d864847b1090af9dc2a2c8c19ff82a33a61dda0292bc4cb97587ab15df1f3ba80424fe2aeac6af4593e0e53ded3d39d723372d2df6b66d4e23a3512734
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMQ:SJ8T1xE3ocg9f2nfLnwYsxf2Zj
TLSH
T17FF312D3EFA649E0C0361BB07C53C10FB8620C6498725B5543D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1008-13-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1632-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1632-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4188-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4188-15-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4188-18-0x0000000010000000-0x000000001006D000-memory.dmp

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