farfli | 37911a8dd83ba70bfd5186bddb7d3be2944f849205e79de5a1103d474be738df

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/10/2026, 16:09

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General

Target
2026-10-14_99fc8db5f111bbb096c34ecb0988d939_coinminer_elex_wannacry.exe
Size 288KB
Sample261014-tl1fdsfv71
SHA256 37911a8dd83ba70bfd5186bddb7d3be2944f849205e79de5a1103d474be738df
MD5 99fc8db5f111bbb096c34ecb0988d939
SHA1 2701004f305cd83dc576add73b1aa46fa2af2019
SHA512 2f65a088a9b27d5bf6d6f3d590403722f1dda05715624024f68b705290436927c4e34c28e41997afea5a82a75a7cf340ca0037ccd5cd33698168a07ba584dbfb
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycz:qtatPE5Txvev1zQBgexOdw6rpI9Fs29H
TLSH
T1D6547C1233E44869E4EA3E72CE76A630D7F9E875AC33D67B03D4430E5A36A04CB55366
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli persistence spyware stealer upx

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/5144-10-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/5144-11-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/5144-13-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/5144-16-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/5144-10-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5144-11-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5144-13-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5144-16-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/memory/4156-2-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x000a00000001b302-3.dat	UPX
behavioral2/memory/5928-7-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x000d00000001c5b2-8.dat	UPX
behavioral2/memory/5144-10-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/5144-11-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/5144-13-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/5144-16-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5928	nnbws.exe

Executes dropped EXE 2 IoCs

pid	Process
5928	nnbws.exe
5144	lhwupl.exe

Loads dropped DLL 1 IoCs

pid	Process
5144	lhwupl.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-1-5-21-696679853-3915825385-3233721679-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\iguubfo\\lhwupl.exe \"c:\\Program Files\\iguubfo\\lhwupl.dll\",Group"	lhwupl.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:	lhwupl.exe
File opened (read-only)	\??\g:	lhwupl.exe
File opened (read-only)	\??\h:	lhwupl.exe
File opened (read-only)	\??\l:	lhwupl.exe
File opened (read-only)	\??\p:	lhwupl.exe
File opened (read-only)	\??\q:	lhwupl.exe
File opened (read-only)	\??\r:	lhwupl.exe
File opened (read-only)	\??\w:	lhwupl.exe
File opened (read-only)	\??\d:	lhwupl.exe
File opened (read-only)	\??\m:	lhwupl.exe
File opened (read-only)	\??\s:	lhwupl.exe
File opened (read-only)	\??\y:	lhwupl.exe
File opened (read-only)	\??\z:	lhwupl.exe
File opened (read-only)	\??\i:	lhwupl.exe
File opened (read-only)	\??\j:	lhwupl.exe
File opened (read-only)	\??\k:	lhwupl.exe
File opened (read-only)	\??\t:	lhwupl.exe
File opened (read-only)	\??\v:	lhwupl.exe
File opened (read-only)	\??\x:	lhwupl.exe
File opened (read-only)	\??\b:	lhwupl.exe
File opened (read-only)	\??\n:	lhwupl.exe
File opened (read-only)	\??\o:	lhwupl.exe
File opened (read-only)	\??\u:	lhwupl.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	lhwupl.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000d00000001c5b2-8.dat	upx
behavioral2/memory/5144-10-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/5144-11-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/5144-13-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/5144-16-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\iguubfo	nnbws.exe
File created	\??\c:\Program Files\iguubfo\lhwupl.dll	nnbws.exe
File created	\??\c:\Program Files\iguubfo\lhwupl.exe	nnbws.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
5924	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 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	lhwupl.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	lhwupl.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	nnbws.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lhwupl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-14_99fc8db5f111bbb096c34ecb0988d939_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
5924	cmd.exe
2540	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	lhwupl.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	lhwupl.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2540	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5144	lhwupl.exe
5144	lhwupl.exe
5144	lhwupl.exe
5144	lhwupl.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5144	lhwupl.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4156	2026-10-14_99fc8db5f111bbb096c34ecb0988d939_coinminer_elex_wannacry.exe
5928	nnbws.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4156 wrote to memory of 5924	4156	2026-10-14_99fc8db5f111bbb096c34ecb0988d939_coinminer_elex_wannacry.exe	89
PID 5924 wrote to memory of 2540	5924	cmd.exe	91
PID 5924 wrote to memory of 5928	5924	cmd.exe	92
PID 5928 wrote to memory of 5144	5928	nnbws.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-10-14_99fc8db5f111bbb096c34ecb0988d939_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-14_99fc8db5f111bbb096c34ecb0988d939_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4156
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nnbws.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-14_99fc8db5f111bbb096c34ecb0988d939_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:5924
- - 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:2540
- - C:\Users\Admin\AppData\Local\Temp\nnbws.exe
    C:\Users\Admin\AppData\Local\Temp\\nnbws.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-14_99fc8db5f111bbb096c34ecb0988d939_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:5928
  - - \??\c:\Program Files\iguubfo\lhwupl.exe
      "c:\Program Files\iguubfo\lhwupl.exe" "c:\Program Files\iguubfo\lhwupl.dll",Group C:\Users\Admin\AppData\Local\Temp\nnbws.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:5144

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

lhwupl.exe

Path C:\Program Files\iguubfo\lhwupl.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

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nnbws.exe

Path C:\Users\Admin\AppData\Local\Temp\nnbws.exe
Size 288KB
SHA256 b11c423cf3a3f9a31fa222f62df96d984751b9c0909644b9d5d351f23dcccf1f
MD5 d65bc83f9be2e978e13501d8005e6018
SHA1 0b5153b01ae9fe8b3cc3c731ec2394ce82055e3e
SHA512 9c958ff20614932b088b00ef0e9b7285a48c3f95feb44ffd051c5edb5576e68c6c5bad72f1f669d9b9bb5e26c20fb045ad44d52fcf940cc33b7d34e4add0267a
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycP:qtatPE5Txvev1zQBgexOdw6rpI9Fs29
TLSH
T1DA547C1233E44869E4EA3E72CE76A630D7F9E875AC33D67B03D4430E5A36A04CB55366
MD5 SHA1 SHA512 SSDEEP TLSH

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lhwupl.dll

Path \??\c:\Program Files\iguubfo\lhwupl.dll
Size 97KB
SHA256 c7af54ae4aebb700b953801927935e8deb25513022fe995be924528a20e1ee4f
MD5 cb4399007f7d660f5ed65d264606e1ff
SHA1 4bca703212e6df13998229003119bdc52521fd96
SHA512 07bdbaad8199372b13971d299c60e7a54d0eec3fbd194a0c445ef8e9bd944cbf2105de868927bc7fd6a393c8b75cce0d701e189902a0ed48c9b9e75c13259d8f
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbG7:5pG6Sg9txRk/SS6bG7
TLSH
T13EA301FA290D7DD6CB354839D6528E25FA29EE348C589F887ECE7C13ACB8510E1641B1
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4156-0-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/4156-2-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/5144-10-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5144-11-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5144-13-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5144-16-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/5928-7-0x0000000000400000-0x000000000043F000-memory.dmp

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