farfli | f4d57718fa05c9978ddc6ccd9d34ba2d30c07bb95de7bd20360f23a8492b3923

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 05:36

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General

Target
2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_coinminer_elex_wannacry.exe
Size 234KB
Sample260804-gank8sdf96
SHA256 f4d57718fa05c9978ddc6ccd9d34ba2d30c07bb95de7bd20360f23a8492b3923
MD5 bf408ad0748a6066ed5507f3c0f2ca07
SHA1 2c75d8cc32886136055a6783d3aa4f8aa4d961a6
SHA512 6ec573c431c1642b4d4803a7ed3a1c963daaf173a3b6359c07671e3dcfb031a293ed4bb3533e794729455b1b70d816311d772e2baa9f7fb0001bafa95d2a9b87
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc5:tgmYA/nsYf8QdsINkZ6CQetFr
TLSH
T17534F18136A5CD77F0621B7E4D7B163A8537BE691B00709BD3C4AD4FB431AE46E2E209
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
behavioral2/memory/6060-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/6060-14-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/6060-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/6060-14-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4632-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/4632-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x0008000000016b4d-3.dat	UPX
behavioral2/memory/4540-7-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4540	dafme.exe

Executes dropped EXE 2 IoCs

pid	Process
4540	dafme.exe
6060	uwdz.exe

Loads dropped DLL 1 IoCs

pid	Process
6060	uwdz.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\it = "c:\\Program Files\\gbfltwtg\\uwdz.exe \"c:\\Program Files\\gbfltwtg\\uwdzy.dll\",Interface"	uwdz.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:	uwdz.exe
File opened (read-only)	\??\n:	uwdz.exe
File opened (read-only)	\??\p:	uwdz.exe
File opened (read-only)	\??\q:	uwdz.exe
File opened (read-only)	\??\r:	uwdz.exe
File opened (read-only)	\??\s:	uwdz.exe
File opened (read-only)	\??\t:	uwdz.exe
File opened (read-only)	\??\v:	uwdz.exe
File opened (read-only)	\??\b:	uwdz.exe
File opened (read-only)	\??\h:	uwdz.exe
File opened (read-only)	\??\k:	uwdz.exe
File opened (read-only)	\??\g:	uwdz.exe
File opened (read-only)	\??\o:	uwdz.exe
File opened (read-only)	\??\u:	uwdz.exe
File opened (read-only)	\??\w:	uwdz.exe
File opened (read-only)	\??\x:	uwdz.exe
File opened (read-only)	\??\z:	uwdz.exe
File opened (read-only)	\??\d:	uwdz.exe
File opened (read-only)	\??\i:	uwdz.exe
File opened (read-only)	\??\j:	uwdz.exe
File opened (read-only)	\??\l:	uwdz.exe
File opened (read-only)	\??\m:	uwdz.exe
File opened (read-only)	\??\y:	uwdz.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	uwdz.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\gbfltwtg	dafme.exe
File created	\??\c:\Program Files\gbfltwtg\uwdzy.dll	dafme.exe
File created	\??\c:\Program Files\gbfltwtg\uwdz.exe	dafme.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
1076	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dafme.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uwdz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_coinminer_elex_wannacry.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
1076	cmd.exe
1388	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	uwdz.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	uwdz.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1388	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6060	uwdz.exe
6060	uwdz.exe
6060	uwdz.exe
6060	uwdz.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6060	uwdz.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4632	2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_coinminer_elex_wannacry.exe
4540	dafme.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4632 wrote to memory of 1076	4632	2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_coinminer_elex_wannacry.exe	89
PID 1076 wrote to memory of 1388	1076	cmd.exe	91
PID 1076 wrote to memory of 4540	1076	cmd.exe	92
PID 4540 wrote to memory of 6060	4540	dafme.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dafme.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_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:1076
- - 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:1388
- - C:\Users\Admin\AppData\Local\Temp\dafme.exe
    C:\Users\Admin\AppData\Local\Temp\\dafme.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_bf408ad0748a6066ed5507f3c0f2ca07_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:4540
  - - \??\c:\Program Files\gbfltwtg\uwdz.exe
      "c:\Program Files\gbfltwtg\uwdz.exe" "c:\Program Files\gbfltwtg\uwdzy.dll",Interface C:\Users\Admin\AppData\Local\Temp\dafme.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:6060

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

uwdz.exe

Path C:\Program Files\gbfltwtg\uwdz.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

dafme.exe

Path C:\Users\Admin\AppData\Local\Temp\dafme.exe
Size 235KB
SHA256 69fca3a481b4772e39ee1e171ae69c6d1d370a739fc1bc880e5690a05b09c1f5
MD5 8a3107777d17b86071231b6cf933b904
SHA1 517d8312a6433b6691b9989790b24494793befd0
SHA512 e9948e2d6a97b97bd383016aa1955c5cc96c1f9408d3869f3ace081a0805b2252e3107b9947e62806515f17146a19344d9176a2057c531d33eb2f4fa8c2afdd9
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc0:tgmYA/nsYf8QdsINkZ6CQetFy
TLSH
T1CD34F18136A5CD77F0621B7E4D7B163A8536BE691B00709BD3C4AD4FB431AE47E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

uwdzy.dll

Path \??\c:\Program Files\gbfltwtg\uwdzy.dll
Size 168KB
SHA256 f839adbf757d695b8c496199785f14f7383bea080430bb02c4aa924e4d4b4c45
MD5 c62a2fdc9391f37f94042166f0f5b622
SHA1 cbc773854b85a95cb2adb0a2b686452be1d307c8
SHA512 2c1ab7c6114b832f61a223b61aae8cd0a290bb4ca88565b640fee844b778a49acdf0f0cce127f88550d2ce37001d64c355d4a7333122e0e9f6b3d42ac2a4a050
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMB:SJ8T1xE3ocg9f2nfLnwYsxf2ZC
TLSH
T14BF312D3EFB649E0C0361BB06C53C10FB8620CA498725B5553D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4540-7-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4632-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4632-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/6060-11-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/6060-10-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/6060-14-0x0000000010000000-0x000000001006D000-memory.dmp

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