farfli | 29a149502c0d7e956968584b0e0a9cc85ff02a4b65c12c0da00f9ba806ca60c6

Analysis

max time kernel
149s
max time network
154s
platform
windows11-21h2_x64
resource
win11-20250502-en
resource tags

arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system
submitted
06/05/2026, 12:19

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General

Target
2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_coinminer_elex_wannacry.exe
Size 410KB
Sample260506-pg8traet4k
SHA256 29a149502c0d7e956968584b0e0a9cc85ff02a4b65c12c0da00f9ba806ca60c6
MD5 9ac5b69e84c566310e30b45c58b45f0f
SHA1 715472209d8dbbb5e2cb40c61b72911a0aeb3927
SHA512 d187c66e280f59cffa3fb106639cd9d2d2678261287a8f60d30a109325ca046b206513d13eb2f3cf8f5a40ca6e5276086830d9bde4241f8efebbfb40b40710be
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LS:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T1AF94D02272D08BA3C1856432CD66E67CD3E5CC689C705E3773E9F65EEE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 2 IoCs

resource	yara_rule
behavioral2/memory/5960-11-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/5960-13-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/5960-11-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5960-13-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002ad96-4.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	5960	rundll32.exe
3	5960	rundll32.exe
4	5960	rundll32.exe
5	5960	rundll32.exe

Deletes itself 1 IoCs

pid	Process
6140	hqttps.exe

Executes dropped EXE 1 IoCs

pid	Process
6140	hqttps.exe

Loads dropped DLL 1 IoCs

pid	Process
5960	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-1-5-21-330179853-1108322181-418488014-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\voxvu\\bsfym.dll\",InitEngine"	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\q:	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)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	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)	\??\e:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	\??\c:\Program Files\voxvu\bsfym.dll	hqttps.exe
File opened for modification	\??\c:\Program Files\voxvu	hqttps.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	2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_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	hqttps.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
5420	cmd.exe
5628	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
5628	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5960	rundll32.exe
5960	rundll32.exe
5960	rundll32.exe
5960	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5960	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1896	2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_coinminer_elex_wannacry.exe
6140	hqttps.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 5420	1896	2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_coinminer_elex_wannacry.exe	78
PID 5420 wrote to memory of 5628	5420	cmd.exe	80
PID 5420 wrote to memory of 6140	5420	cmd.exe	81
PID 6140 wrote to memory of 5960	6140	hqttps.exe	82

C:\Users\Admin\AppData\Local\Temp\2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hqttps.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5420
- - 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:5628
- - C:\Users\Admin\AppData\Local\Temp\hqttps.exe
    C:\Users\Admin\AppData\Local\Temp\\hqttps.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-06_9ac5b69e84c566310e30b45c58b45f0f_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:6140
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\voxvu\bsfym.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\hqttps.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:5960

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

hqttps.exe

Path C:\Users\Admin\AppData\Local\Temp\hqttps.exe
Size 410KB
SHA256 d11c82f401ce2c6e718d3dcf36c7176c647f4734058b0dd2adf9af0b78395283
MD5 544060d339f1728d91545f3145005352
SHA1 10f588145d188399427b121b3edbb55528d00281
SHA512 cc2edc2afb04f758d6104c343199859a4f178291cd25cae64f6bd26536dd14cff04e0cae1dfd6312501f82d703d282f8ac68a53424a3163a5670e0de1365668e
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LS+:jGmTju+mMC4ITJE8dfSJ/F6t
TLSH
T16194D02272D08BA3C1866432CD66E67CD3E5CC689C705E3773E9F65EEE36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

bsfym.dll

Path \??\c:\Program Files\voxvu\bsfym.dll
Size 176KB
SHA256 5f498f7e4b58ed97f3443a8f8d733d1691ab9565ee6613d32e6e406fc54363c1
MD5 643d1921664e453aae026a6d08fbfec7
SHA1 70266adbe899ae2ca543088771d2e3c09b6d7caf
SHA512 ad5dada510c178d199f27dbc05d4b17c2fc425aed260df3a9776ecc08f1ec29a87bfe8edda377edb347ec74317ce568a3edae5281c716f902e854f8d07766a46
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocJ:1Jv2tOItshGYdMnYYVjasKbOWSFofJ
TLSH
T118041261862D1C34D087B7717B05920DF6B452A49079CB93F7B8AF2B3C12AEA806E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1896-1-0x0000000000B50000-0x0000000000BEC000-memory.dmp

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memory/5960-11-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/5960-10-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/5960-9-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/5960-13-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/5960-14-0x0000000000E00000-0x0000000000E9C000-memory.dmp

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memory/5960-28-0x0000000000E00000-0x0000000000E9C000-memory.dmp

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memory/6140-6-0x0000000000A10000-0x0000000000AAC000-memory.dmp

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