farfli | 6507fb5e7c5c6948286698b4202769e14d5d7ebfa06dec865e391e65d900d5f2

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
09/08/2026, 07:05

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General

Target
2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe
Size 402KB
Sample260809-hwqhdssgrf
SHA256 6507fb5e7c5c6948286698b4202769e14d5d7ebfa06dec865e391e65d900d5f2
MD5 07993dcf8f61cba42c70f674677be084
SHA1 8f457bb9c6b2c11736bf5f582fad7274e005e196
SHA512 d89e00fba8067bd44b1a85e6d991a8d7001f83dd66aa256246b054b99d6be7225f6e07b55b3a68d87fa419981e90e3ffcbed45c7983bd6cff6fd2af319d0930b
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T13994AF01E78351D6DE8225B081FA7377B3789A4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer

Malware Config

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli

Detects Farfli Backdoor 4 IoCs

resource	yara_rule
behavioral1/memory/1164-14-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/1164-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/1164-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/1164-20-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral1/memory/1164-14-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1164-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1164-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1164-20-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/3476-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/3476-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x000b0000000240d6-4.dat	UPX
behavioral1/memory/4656-10-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x00080000000244b6-13.dat	UPX
behavioral1/memory/1164-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/1164-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/1164-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/1164-20-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4656	njvhv.exe

Executes dropped EXE 2 IoCs

pid	Process
4656	njvhv.exe
1164	kgh.exe

Loads dropped DLL 1 IoCs

pid	Process
1164	kgh.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-1-5-21-889581200-2041691093-2048517887-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\isxfg\\kgh.exe \"c:\\Program Files\\isxfg\\kghct.dll\",Viewer"	kgh.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:	kgh.exe
File opened (read-only)	\??\a:	kgh.exe
File opened (read-only)	\??\g:	kgh.exe
File opened (read-only)	\??\j:	kgh.exe
File opened (read-only)	\??\o:	kgh.exe
File opened (read-only)	\??\z:	kgh.exe
File opened (read-only)	\??\p:	kgh.exe
File opened (read-only)	\??\q:	kgh.exe
File opened (read-only)	\??\e:	kgh.exe
File opened (read-only)	\??\l:	kgh.exe
File opened (read-only)	\??\n:	kgh.exe
File opened (read-only)	\??\s:	kgh.exe
File opened (read-only)	\??\v:	kgh.exe
File opened (read-only)	\??\x:	kgh.exe
File opened (read-only)	\??\r:	kgh.exe
File opened (read-only)	\??\t:	kgh.exe
File opened (read-only)	\??\u:	kgh.exe
File opened (read-only)	\??\w:	kgh.exe
File opened (read-only)	\??\y:	kgh.exe
File opened (read-only)	\??\b:	kgh.exe
File opened (read-only)	\??\h:	kgh.exe
File opened (read-only)	\??\i:	kgh.exe
File opened (read-only)	\??\k:	kgh.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	kgh.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\isxfg\kgh.exe	njvhv.exe
File opened for modification	\??\c:\Program Files\isxfg\kgh.exe	njvhv.exe
File opened for modification	\??\c:\Program Files\isxfg	njvhv.exe
File created	\??\c:\Program Files\isxfg\kghct.dll	njvhv.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
4856	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	2026-08-09_07993dcf8f61cba42c70f674677be084_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	njvhv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kgh.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
4856	cmd.exe
2924	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	kgh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kgh.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2924	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1164	kgh.exe
1164	kgh.exe
1164	kgh.exe
1164	kgh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1164	kgh.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3476	2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe
4656	njvhv.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3476 wrote to memory of 4856	3476	2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe	86
PID 4856 wrote to memory of 2924	4856	cmd.exe	88
PID 4856 wrote to memory of 4656	4856	cmd.exe	89
PID 4656 wrote to memory of 1164	4656	njvhv.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3476
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\njvhv.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_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:4856
- - 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:2924
- - C:\Users\Admin\AppData\Local\Temp\njvhv.exe
    C:\Users\Admin\AppData\Local\Temp\\njvhv.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_07993dcf8f61cba42c70f674677be084_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:4656
  - - \??\c:\Program Files\isxfg\kgh.exe
      "c:\Program Files\isxfg\kgh.exe" "c:\Program Files\isxfg\kghct.dll",Viewer C:\Users\Admin\AppData\Local\Temp\njvhv.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:1164

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

Replay Monitor

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Downloads

kgh.exe

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

Submit Download

kghct.dll

Path C:\Program Files\isxfg\kghct.dll
Size 89KB
SHA256 196bb88a00d25f1632a1362203d82e95aa84da506157ce3c3bae7cd56170e23c
MD5 c10c53b03a096faeb754b1676ba41e3c
SHA1 843adceeb8998f67fe768f6171e55c4848254ecd
SHA512 e2d03ce038bd49f11fe5be9f79bfa658682298e97cba9975434d19cd7e9cebd4ea9a4b9854984042d06b0773ae4e35512f36479bbc135185d35303a8814972ec
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGo:M1uF6Feu2NlQOBcGo
TLSH
T1FC9302C45665CD8BCCD87072327FAA4EE631C4CCB941ACB34A5E13A31A36AE3D41A705
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

njvhv.exe

Path C:\Users\Admin\AppData\Local\Temp\njvhv.exe
Size 402KB
SHA256 4edab1eea54c6fae4b587f8aae4dcc0640461aeb2061e7a16de86d514f94e757
MD5 f8bf9df67cd6655b1f8f477398b41a76
SHA1 18c90b668f8cbf2e73e7dc6ecb88d2fd23a346ad
SHA512 853d77bceece3b2bfdce7a461612940c6605fb91e2a83a020a09f4445d2f56a0b839c5bc2eee65b3b1bb88d8c045c4fb72a725eed35af3e3fbf8aab3ca1b7e8b
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH2:zdE3sJd1fm/+yb3OYs84/JH62
TLSH
T13994AF01E78351D6DE8225B081FA7377B3789A4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1164-14-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1164-15-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1164-17-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1164-20-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/3476-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3476-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/4656-10-0x0000000000400000-0x0000000000471000-memory.dmp

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