farfli | 8c26d6adbb9a43494c2b95e2d21ee4e06f53c4c295d094381ad513983db85e05

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
08/08/2026, 09:58

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General

Target
2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_coinminer_elex_wannacry.exe
Size 311KB
Sample260808-lzm38avanh
SHA256 8c26d6adbb9a43494c2b95e2d21ee4e06f53c4c295d094381ad513983db85e05
MD5 6a6b6709a2b8d2eed2bf5874fa7600fa
SHA1 73f47058daf914b0db986d704d1afe1e31aff080
SHA512 8fe8d2aa760ba6e18e1939a28e047c227efad7294188e07e1dc627d9da4aa85583742565f74fa44969998679c6ca3e748e3198cb346b1fb3726469aa21b538e9
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOC:ywLcCmuErglr73aAD+x
TLSH
T1A864F141D511CF47FC2FCAB6823E5E355317AE153B205693D3C8BA1FA5B2B42A63A0D8
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit 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 7 IoCs

resource	yara_rule
behavioral2/memory/3244-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3244-10-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3244-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3244-17-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3244-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3244-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/3244-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/3244-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3244-10-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3244-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3244-17-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3244-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3244-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3244-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/5016-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/5016-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x0011000000019a98-3.dat	UPX
behavioral2/memory/4332-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
5	3244	rundll32.exe
8	3244	rundll32.exe
9	3244	rundll32.exe
10	3244	rundll32.exe
12	3244	rundll32.exe
13	3244	rundll32.exe
15	3244	rundll32.exe
16	3244	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4332	pttjx.exe

Executes dropped EXE 1 IoCs

pid	Process
4332	pttjx.exe

Loads dropped DLL 1 IoCs

pid	Process
3244	rundll32.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-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\vjnzjlh\\lnpayh.dll\",GetProc"	rundll32.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)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.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	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5016-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/5016-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x0011000000019a98-3.dat	upx
behavioral2/memory/4332-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vjnzjlh	pttjx.exe
File created	\??\c:\Program Files\vjnzjlh\lnpayh.dll	pttjx.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
4516	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	pttjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_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
4516	cmd.exe
3440	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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3440	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3244	rundll32.exe
3244	rundll32.exe
3244	rundll32.exe
3244	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3244	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5016	2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_coinminer_elex_wannacry.exe
4332	pttjx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5016 wrote to memory of 4516	5016	2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_coinminer_elex_wannacry.exe	89
PID 4516 wrote to memory of 3440	4516	cmd.exe	91
PID 4516 wrote to memory of 4332	4516	cmd.exe	92
PID 4332 wrote to memory of 3244	4332	pttjx.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\pttjx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_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:4516
- - 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:3440
- - C:\Users\Admin\AppData\Local\Temp\pttjx.exe
    C:\Users\Admin\AppData\Local\Temp\\pttjx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_6a6b6709a2b8d2eed2bf5874fa7600fa_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:4332
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\vjnzjlh\lnpayh.dll",GetProc C:\Users\Admin\AppData\Local\Temp\pttjx.exe
      4⤵
      Badlisted process makes network request
      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:3244

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

pttjx.exe

Path C:\Users\Admin\AppData\Local\Temp\pttjx.exe
Size 312KB
SHA256 f0350dbfe6512269e71956c197576ae568619f9f48f00a74bf08dbca6b189522
MD5 340a74f4c684ec64a9fd43d9c60cf5e2
SHA1 910ea55e44818a2e160abb4ec788e2c4873894b2
SHA512 1ea46cad399d154fad67a4a517011c05ed1305f812b24e2b7e3cc048a3260707fb3dddcadcce7db5bea03a57ef37556224031a9d90c3edfda3c1e48d0144e70e
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO:ywLcCmuErglr73aAD+
TLSH
T17364F141D511CF47FC2FCAB6823E5E355317AE153B205693D3C8BA1FA5B2B42A63A0D8
MD5 SHA1 SHA512 SSDEEP TLSH

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lnpayh.dll

Path \??\c:\Program Files\vjnzjlh\lnpayh.dll
Size 218KB
SHA256 f70f18d3a18979b9a38dd5919b9bbacd5134fbc5b43e26c40922bf69e049ba35
MD5 fee97db70f385a099f01c9527262858c
SHA1 c3ee10601eb2fafc8a765f90713586268c75affa
SHA512 7d4392dfbb4e5ecf5387e80a72b09960e184b84b67c48d9fc73000748495c832315efb8ec2ec947aa8c20192731e0f69f9a6c2c0a54c69539212a2ccc4de7c92
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauytq:pnNwDTi3swddDiROXIw
TLSH
T12324128BCF983873C5223379597951A0B9325290AFA1534DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3244-15-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3244-9-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3244-12-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3244-14-0x00000000011C0000-0x00000000011C1000-memory.dmp

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memory/3244-10-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3244-17-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3244-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3244-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/3244-20-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4332-6-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/5016-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/5016-0-0x0000000000400000-0x0000000000483000-memory.dmp

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