farfli | 8f5e4f1f7a7985bf2bd487731a11deb10ab3420cf6f3ada33ed6dc7c6f1339f4

Analysis

max time kernel
150s
max time network
138s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
08/11/2026, 15:17

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General

Target
2026-11-07_548c3d5cf6be92c81b80a38745562648_coinminer_elex_wannacry.exe
Size 402KB
Sample261108-spfdysdw9j
SHA256 8f5e4f1f7a7985bf2bd487731a11deb10ab3420cf6f3ada33ed6dc7c6f1339f4
MD5 548c3d5cf6be92c81b80a38745562648
SHA1 afe8dc65e3efd30b9913cece49ef1aeacf1d0101
SHA512 0a424435b79e760f9c5bdef0a10d85a615fe6717ae81bf11190b377545288fe1984b6288ef9027a85c247f6dd5922d6e96739ca0be25eda07afe8abf4ec7917e
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumHC:zdE3sJd1fm/+yb3OYs84/JH6C
TLSH
T1B494AF01E78351D6DE8225B081FA7376B378DA4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 3 IoCs

resource	yara_rule
behavioral2/memory/6068-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/6068-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/6068-16-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/6068-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/6068-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/6068-16-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/3668-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/3668-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000600000001b85c-3.dat	UPX
behavioral2/memory/1200-7-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000e00000001c512-8.dat	UPX
behavioral2/memory/6068-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/6068-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/6068-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/6068-16-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
1200	dfwto.exe

Executes dropped EXE 2 IoCs

pid	Process
1200	dfwto.exe
6068	awx.exe

Loads dropped DLL 1 IoCs

pid	Process
6068	awx.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-1-5-21-1262770251-41185387-1005173349-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\ycviv\\awx.exe \"c:\\Program Files\\ycviv\\awxlg.dll\",Viewer"	awx.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)	\??\p:	awx.exe
File opened (read-only)	\??\u:	awx.exe
File opened (read-only)	\??\z:	awx.exe
File opened (read-only)	\??\b:	awx.exe
File opened (read-only)	\??\i:	awx.exe
File opened (read-only)	\??\l:	awx.exe
File opened (read-only)	\??\n:	awx.exe
File opened (read-only)	\??\o:	awx.exe
File opened (read-only)	\??\w:	awx.exe
File opened (read-only)	\??\d:	awx.exe
File opened (read-only)	\??\g:	awx.exe
File opened (read-only)	\??\h:	awx.exe
File opened (read-only)	\??\k:	awx.exe
File opened (read-only)	\??\m:	awx.exe
File opened (read-only)	\??\r:	awx.exe
File opened (read-only)	\??\v:	awx.exe
File opened (read-only)	\??\x:	awx.exe
File opened (read-only)	\??\q:	awx.exe
File opened (read-only)	\??\s:	awx.exe
File opened (read-only)	\??\t:	awx.exe
File opened (read-only)	\??\y:	awx.exe
File opened (read-only)	\??\a:	awx.exe
File opened (read-only)	\??\j:	awx.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	awx.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\ycviv	dfwto.exe
File created	\??\c:\Program Files\ycviv\awxlg.dll	dfwto.exe
File created	\??\c:\Program Files\ycviv\awx.exe	dfwto.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
3388	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 1 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	awx.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	2026-11-07_548c3d5cf6be92c81b80a38745562648_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	dfwto.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	awx.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
3388	cmd.exe
2220	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	awx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	awx.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2220	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6068	awx.exe
6068	awx.exe
6068	awx.exe
6068	awx.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6068	awx.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3668	2026-11-07_548c3d5cf6be92c81b80a38745562648_coinminer_elex_wannacry.exe
1200	dfwto.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 3388	3668	2026-11-07_548c3d5cf6be92c81b80a38745562648_coinminer_elex_wannacry.exe	90
PID 3388 wrote to memory of 2220	3388	cmd.exe	92
PID 3388 wrote to memory of 1200	3388	cmd.exe	93
PID 1200 wrote to memory of 6068	1200	dfwto.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-11-07_548c3d5cf6be92c81b80a38745562648_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-07_548c3d5cf6be92c81b80a38745562648_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dfwto.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-07_548c3d5cf6be92c81b80a38745562648_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:3388
- - 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:2220
- - C:\Users\Admin\AppData\Local\Temp\dfwto.exe
    C:\Users\Admin\AppData\Local\Temp\\dfwto.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-07_548c3d5cf6be92c81b80a38745562648_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:1200
  - - \??\c:\Program Files\ycviv\awx.exe
      "c:\Program Files\ycviv\awx.exe" "c:\Program Files\ycviv\awxlg.dll",Viewer C:\Users\Admin\AppData\Local\Temp\dfwto.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:6068

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

Indicator Removal

T1070

File Deletion

T1070.004

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

awx.exe

Path C:\Program Files\ycviv\awx.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

dfwto.exe

Path C:\Users\Admin\AppData\Local\Temp\dfwto.exe
Size 402KB
SHA256 66860411a00abe4c3226b133e8ac04d90332cc2f543b8ff8cc210319118ea31d
MD5 9317a89f1c2eb33e01e0e05a09c4b92f
SHA1 c0f095a9f8cc372376405ebd02f91a2af2df2afd
SHA512 12e8ae7551ef8af446c3322d89775f1000f361dc8cffaf34504273c2ed178791d58198dbc0a07b29f4e5d9f7e3a1ae8343b2c0fb1e3df82a9f6cfa64f71ac061
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T16E94AF01E78351D6DE8225B081FA7376B378DA4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

awxlg.dll

Path \??\c:\Program Files\ycviv\awxlg.dll
Size 89KB
SHA256 6bf01052f1b37e16d1ba8fd8c3acd3f90a85ab493dbb0e8ee61ef313ea37239d
MD5 1bc7703f219575b0e93e50b8294b6653
SHA1 2763043379249781dfb75df3eb3bd8e5b350e567
SHA512 124e075f35856f3895ee2f9cd5366ccffd013a1cbd60e7f54f0d13ae57bcbb7686685644b8eba5e73b05f6cacdeb268b91d418fb2ef0c85404645f8d96dcb892
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGg:M1uF6Feu2NlQOBcGg
TLSH
T1A89302C45665CD8BCCD87072727FAA4EE631D48CB941ACB34B5E13A31A36AF3D41AB05
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1200-7-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3668-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3668-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/6068-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/6068-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/6068-13-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/6068-16-0x0000000010000000-0x0000000010033000-memory.dmp

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