farfli | 88cfb58c9a3cad13d3bb79b9a3c5d0764b136d263892b02c47308bc3fcf56994

Analysis

max time kernel
148s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/08/2026, 03:46

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General

Target
2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_coinminer_elex_wannacry.exe
Size 398KB
Sample260807-ebr9pszvht
SHA256 88cfb58c9a3cad13d3bb79b9a3c5d0764b136d263892b02c47308bc3fcf56994
MD5 b6b9e2e84afff847ace00f0b57549e8a
SHA1 d0770d67dacbfffdbabedae488c74dbbe9636c5d
SHA512 9aa29ffb422f016bc30503caff4bd441676ff896974bdc51860c4544d7212bc54ec784298d770ad88388c8b7891d98a2e898efbb345fe87a02e0ac6c70e6f9e0
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumHp:zdE3sJd1fm/+yb3OYs84/JH6p
TLSH
T14E94AF01E7C741D6DE82257081FA7377B3789A490F12CBE3BB68EE2E6E211D1953B119
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
behavioral2/memory/2104-10-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2104-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2104-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2104-16-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/2104-10-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2104-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2104-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2104-16-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/4936-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/4936-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000f00000001b1d0-3.dat	UPX
behavioral2/memory/4760-7-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000d00000001c5e1-8.dat	UPX
behavioral2/memory/2104-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2104-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2104-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2104-16-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4760	mklfl.exe

Executes dropped EXE 2 IoCs

pid	Process
4760	mklfl.exe
2104	amwjfxv.exe

Loads dropped DLL 1 IoCs

pid	Process
2104	amwjfxv.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-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\bgqazxzee\\amwjfxv.exe \"c:\\Program Files\\bgqazxzee\\amwjfxv.dll\",Viewer"	amwjfxv.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)	\??\g:	amwjfxv.exe
File opened (read-only)	\??\i:	amwjfxv.exe
File opened (read-only)	\??\j:	amwjfxv.exe
File opened (read-only)	\??\l:	amwjfxv.exe
File opened (read-only)	\??\m:	amwjfxv.exe
File opened (read-only)	\??\d:	amwjfxv.exe
File opened (read-only)	\??\k:	amwjfxv.exe
File opened (read-only)	\??\n:	amwjfxv.exe
File opened (read-only)	\??\p:	amwjfxv.exe
File opened (read-only)	\??\q:	amwjfxv.exe
File opened (read-only)	\??\u:	amwjfxv.exe
File opened (read-only)	\??\v:	amwjfxv.exe
File opened (read-only)	\??\z:	amwjfxv.exe
File opened (read-only)	\??\b:	amwjfxv.exe
File opened (read-only)	\??\h:	amwjfxv.exe
File opened (read-only)	\??\o:	amwjfxv.exe
File opened (read-only)	\??\r:	amwjfxv.exe
File opened (read-only)	\??\s:	amwjfxv.exe
File opened (read-only)	\??\t:	amwjfxv.exe
File opened (read-only)	\??\x:	amwjfxv.exe
File opened (read-only)	\??\y:	amwjfxv.exe
File opened (read-only)	\??\a:	amwjfxv.exe
File opened (read-only)	\??\w:	amwjfxv.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	amwjfxv.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\bgqazxzee	mklfl.exe
File created	\??\c:\Program Files\bgqazxzee\amwjfxv.dll	mklfl.exe
File created	\??\c:\Program Files\bgqazxzee\amwjfxv.exe	mklfl.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
6108	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mklfl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	amwjfxv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_coinminer_elex_wannacry.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
6108	cmd.exe
4388	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	amwjfxv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	amwjfxv.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4388	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2104	amwjfxv.exe
2104	amwjfxv.exe
2104	amwjfxv.exe
2104	amwjfxv.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2104	amwjfxv.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4936	2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_coinminer_elex_wannacry.exe
4760	mklfl.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 6108	4936	2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_coinminer_elex_wannacry.exe	89
PID 6108 wrote to memory of 4388	6108	cmd.exe	91
PID 6108 wrote to memory of 4760	6108	cmd.exe	92
PID 4760 wrote to memory of 2104	4760	mklfl.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mklfl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_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:6108
- - 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:4388
- - C:\Users\Admin\AppData\Local\Temp\mklfl.exe
    C:\Users\Admin\AppData\Local\Temp\\mklfl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_b6b9e2e84afff847ace00f0b57549e8a_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:4760
  - - \??\c:\Program Files\bgqazxzee\amwjfxv.exe
      "c:\Program Files\bgqazxzee\amwjfxv.exe" "c:\Program Files\bgqazxzee\amwjfxv.dll",Viewer C:\Users\Admin\AppData\Local\Temp\mklfl.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:2104

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

amwjfxv.exe

Path C:\Program Files\bgqazxzee\amwjfxv.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

mklfl.exe

Path C:\Users\Admin\AppData\Local\Temp\mklfl.exe
Size 398KB
SHA256 060c9c07a70d55a1c79909363d47caaa7d962bb0a978625fc3795d749ce02e4a
MD5 336239c5a02dff08d5840c457a54dfcf
SHA1 165588699debb19a0b903ae3ea54c448c656256a
SHA512 02de83f1ccfe520341f1a88bc6d6cb54b5276bd1c270772d83b9b58cf260a06f5271a71a1acfc3fdd8493a3fc7706cac77923566d0f1201430ec79206a6901de
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T17394AF01E7C741D6DE82257081FA7377B3789A490F12CBE3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

amwjfxv.dll

Path \??\c:\Program Files\bgqazxzee\amwjfxv.dll
Size 89KB
SHA256 1b243cf3050fa150ee97193c914feb2913515b86e207bf7b6ccc6cd3b9c1a420
MD5 27ee72941e7dbabfa9e2a9aeb2eace32
SHA1 c5d0bcb59febe9fb473b31f410e6a815e47f6f5e
SHA512 b00e3719c17a68e27afc1153bfd0a3b46c5c4bdac068a56efad4d95ae630c9bf5b9ed7d67fa39076f8c63e74775c14e830268b813f1657563fb1b05f2e85fd21
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGm:M1uF6Feu2NlQOBcGm
TLSH
T19B9302C45665CD8BCCD87072327FAA4EE631C48CB941ACB34B5E12A31A36AF3D41AB45
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2104-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2104-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2104-13-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2104-16-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/4760-7-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/4936-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/4936-2-0x0000000000400000-0x0000000000471000-memory.dmp

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