farfli | 8e982ea1fd86b394e50e38764746a5505f6f3dc3acf098ee8cc2d234db7f0804

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
25/08/2026, 07:45

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General

Target
2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_elex_wannacry.exe
Size 96KB
Sample260825-jlsensvsf1
SHA256 8e982ea1fd86b394e50e38764746a5505f6f3dc3acf098ee8cc2d234db7f0804
MD5 8f2b2b3059caa9db9df0571a09de28f6
SHA1 454d2019f67c709a828e50e471e285c0959cae43
SHA512 14a900796a2e4afb7d5c8730a3723ff4a033f1a214a4a483776a7f4ec747a8e93dd54ad3e0dbda9e10efaf7a91fe9717342435e936be2ac2ff6e0198a2cf3f24
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6:uLRrO10TiJD9yjqrilyxOuPp6
TLSH
T185A3BF1DAD52C8AEE0014B7147579715E6B2AC5AF9714F334340FA1DEF32A0BEED9288
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 3 IoCs

resource	yara_rule
behavioral1/memory/3468-12-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/3468-15-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/3468-16-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/3468-12-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3468-15-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3468-16-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
4	3468	rundll32.exe
5	3468	rundll32.exe
6	3468	rundll32.exe
15	3468	rundll32.exe
34	3468	rundll32.exe
47	3468	rundll32.exe
57	3468	rundll32.exe
81	3468	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3608	vreiw.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	vreiw.exe

Loads dropped DLL 1 IoCs

pid	Process
3468	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-1-5-21-2370214745-1838013427-2987045292-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\lwondxqa\\apvvt.dll\",QueryPluginInterface"	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)	\??\w:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	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

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
2472	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	vreiw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_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

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
2472	cmd.exe
3108	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
3108	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe
3468	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3468	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3840	2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_elex_wannacry.exe
3608	vreiw.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3840 wrote to memory of 2472	3840	2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_elex_wannacry.exe	87
PID 2472 wrote to memory of 3108	2472	cmd.exe	89
PID 2472 wrote to memory of 3608	2472	cmd.exe	90
PID 3608 wrote to memory of 3468	3608	vreiw.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3840
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vreiw.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_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:2472
- - 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:3108
- - C:\Users\Admin\AppData\Local\Temp\vreiw.exe
    C:\Users\Admin\AppData\Local\Temp\\vreiw.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-24_8f2b2b3059caa9db9df0571a09de28f6_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3608
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\lwondxqa\apvvt.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\vreiw.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:3468

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

vreiw.exe

Path C:\Users\Admin\AppData\Local\Temp\vreiw.exe
Size 96KB
SHA256 14db833223dc90cfec4387561d64222cad36006e4e4e1be70d488ae0148cf086
MD5 cedb0b14163079305528d2ca037ea24a
SHA1 89931c33c882beb7112918de6420758bb6ab270a
SHA512 446ffef33171cff411f05245d83ee9fb7848e47a7fe65df9aaffaa42449e7016af7d4c471e858194ce9bd5720418c342cc1d76d89c6477c78f5e6edc2a0fe277
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6Q:uLRrO10TiJD9yjqrilyxOuPp6Q
TLSH
T186A3BF1DAD52C8AEE0014B7143579715E6B2AC5AF9714F334340FA1DEF32A0BEED9288
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

apvvt.dll

Path \??\c:\lwondxqa\apvvt.dll
Size 44KB
SHA256 9111c1eb1f0b59dcd49cfd5a0abc0ba100ac59a3bcae8623ff091dfdc46fed3c
MD5 0f12a7d509b2c9bb9b4cd6d8a0325e86
SHA1 f5fb59ad4f0633d115b06f35a2dc161dc4367157
SHA512 e3c84a643ff0a2627daba8a056221985a472aaf07bade61b3e9459db4bfc8792c1347606911e3fcc01581508004b18b5435bcccd5e7617cc6d091f37a5f42e7f
SSDEEP 768:DICzePjle2367kjhrXLdCuYMW8QVnwrLDGe/brbtJyOTuXfADVjeJ2i/MVJWAE:DDePjA23Ukjh37YMonwrvGybrbbRCf4E
TLSH
T1FD23F1A7B94E8D4FC0AE41F7078FC8D422B5589A97A7CB4626008F216CC4FB07E52376
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3468-10-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3468-11-0x0000000002810000-0x0000000002812000-memory.dmp

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memory/3468-12-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3468-13-0x0000000002810000-0x0000000002812000-memory.dmp

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memory/3468-15-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3468-16-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3608-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3840-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3840-2-0x0000000000400000-0x0000000000417000-memory.dmp

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