farfli | 672ee45122b7e34756e10fa3b049bdfd4bf3beb9d592e2ecc55c14c9ecd79417

Analysis

max time kernel
148s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
29/06/2026, 04:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-06-27_9f87795a1ec967ed4739a111c2992053_elex_wannacry.exe
Size 96KB
Sample260629-e6grfsc17y
SHA256 672ee45122b7e34756e10fa3b049bdfd4bf3beb9d592e2ecc55c14c9ecd79417
MD5 9f87795a1ec967ed4739a111c2992053
SHA1 7c2d2f65b3daac4183ce001d8ed336d0b6a08778
SHA512 e8b09ef57d427d9fcf8cb01ad675e060c308306e5ca56a4e04be8c2cf75c9d9a8a228797bcb2d148ddb00ba00205124fc4720a065342b007e362580e33802d6a
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6:el69Ml0TE
TLSH
T1EBA3BE179BA589C9F1216C30562E773087BFA85D3F1457639348EE4EE437D81EC3628A
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 4 IoCs

resource	yara_rule
behavioral2/memory/2032-10-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/2032-9-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/2032-11-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/2032-12-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2032-9-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2032-11-0x0000000010000000-0x0000000010032000-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
2	2032	rundll32.exe
3	2032	rundll32.exe
4	2032	rundll32.exe
5	2032	rundll32.exe
7	2032	rundll32.exe
9	2032	rundll32.exe
10	2032	rundll32.exe
11	2032	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000d00000001c5e0-7.dat	acprotect

Deletes itself 1 IoCs

pid	Process
3144	yuzdal.exe

Executes dropped EXE 1 IoCs

pid	Process
3144	yuzdal.exe

Loads dropped DLL 1 IoCs

pid	Process
2032	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-1-5-21-2289519114-2956110270-1748446682-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\wumhc\\swyba.dll\",DoVirusScan"	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	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

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-27_9f87795a1ec967ed4739a111c2992053_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	yuzdal.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
5984	cmd.exe
3240	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
3240	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2032	rundll32.exe
2032	rundll32.exe
2032	rundll32.exe
2032	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2032	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1160	2026-06-27_9f87795a1ec967ed4739a111c2992053_elex_wannacry.exe
3144	yuzdal.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1160 wrote to memory of 5984	1160	2026-06-27_9f87795a1ec967ed4739a111c2992053_elex_wannacry.exe	89
PID 5984 wrote to memory of 3240	5984	cmd.exe	91
PID 5984 wrote to memory of 3144	5984	cmd.exe	92
PID 3144 wrote to memory of 2032	3144	yuzdal.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-06-27_9f87795a1ec967ed4739a111c2992053_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-27_9f87795a1ec967ed4739a111c2992053_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\yuzdal.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-27_9f87795a1ec967ed4739a111c2992053_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5984
- - 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:3240
- - \??\c:\yuzdal.exe
    c:\yuzdal.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-27_9f87795a1ec967ed4739a111c2992053_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3144
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\wumhc\swyba.dll",DoVirusScan c:\yuzdal.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:2032

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

Replay Monitor

Loading Replay Monitor...

Downloads

swyba.dll

Path \??\c:\wumhc\swyba.dll
Size 50KB
SHA256 b2d21c40c5bfc0f7695945946fa1cdd4eaf2f66a8391ddde6307c5f765fbf525
MD5 cbfc06794d16ace6adf42210183fc1b9
SHA1 74fc68a2af225b0aca954b3684940747511013c5
SHA512 181dbe8b63e28a81cb8e0b7240df8745da350e1ab433b157b8b4fd36aa10f0782e807c09563bcffe37cfe64aa1b514b2cc1f179fbcba422d96867179d88e13c9
SSDEEP 768:Z+arYIR3u5v4bGwCl56LNQQe5JBtGf1oTYtx/qQvorLOpqPJ/UP2Gy+OIudD05:ZPrG57TzDxJS6Etx/Zv2OwSy+OIOD05
TLSH
T15733F1ACE2F064F5D0AF6B345952225CF5C26F238D3190DB4A8214BF3C32A5B5B5E721
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

yuzdal.exe

Path \??\c:\yuzdal.exe
Size 97KB
SHA256 b9d8b2c48e2891edf59bf0399787fb4b34e6316e6052f1d6c6cdbdb7031b679e
MD5 0a7da93e5fb5b2fa146d5170adbd133a
SHA1 c335f2207fa40a9ff5265d5fe5ca5d7012ced324
SHA512 acbf32670ccd63d5ad2e9b432664c9d58d5d5537f60a36f712fa39c1f75a11e4a9feba4d33e6be846b101cd1c1e61368b142210aee0cd2257d1f2dc550c0e976
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6G:el69Ml0TEZ
TLSH
T157A3AE179BA589C9F1216C30566E373087BEA85D3F1457639348EE4EE837D81EC3628A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1160-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/1160-2-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/2032-10-0x0000000010001000-0x0000000010021000-memory.dmp

Download

memory/2032-9-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/2032-11-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/2032-12-0x0000000010001000-0x0000000010021000-memory.dmp

Download

memory/3144-6-0x0000000000400000-0x0000000000417000-memory.dmp

Download