farfli | a2146d5c28d8ddb03c5f9cf57b15779bc2c1edfa02b5ba956d5a2c60a6e269c5

Analysis

max time kernel
150s
max time network
146s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
07/05/2026, 02:58

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-05-07_fcc808db421de2f1d5fdf19706dd379e_elex_wannacry.exe
Size 92KB
Sample260507-dgltfaet8s
SHA256 a2146d5c28d8ddb03c5f9cf57b15779bc2c1edfa02b5ba956d5a2c60a6e269c5
MD5 fcc808db421de2f1d5fdf19706dd379e
SHA1 2476ba4aacc45fae3800b4517a0e90b08f95e164
SHA512 45f3864141414454a974c074139637c156f2a5450b6d38672af811ab876fa4fd8c4e857af700b16ef8d2bffbb69808e6a57df8a974214e0efb6bddf0c3225371
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzlu:eSABNx6vb4RoI4pyjHYLhal01UoPX+hv
TLSH
T11C93BE07ABA989C9F1217C30556E373487BF985D3F1457979348EE4E9833D80EC3628A
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/3184-10-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/3184-11-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/3184-12-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/3184-13-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/3184-10-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3184-12-0x0000000010000000-0x0000000010032000-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	3184	rundll32.exe
3	3184	rundll32.exe
4	3184	rundll32.exe
5	3184	rundll32.exe
6	3184	rundll32.exe
7	3184	rundll32.exe
9	3184	rundll32.exe
10	3184	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x001a00000002b493-8.dat	acprotect

Deletes itself 1 IoCs

pid	Process
3552	attxw.exe

Executes dropped EXE 1 IoCs

pid	Process
3552	attxw.exe

Loads dropped DLL 1 IoCs

pid	Process
3184	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-1-5-21-2397528088-2630719772-1129911217-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\wyimt\\orimg.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)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\t:	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	2026-05-07_fcc808db421de2f1d5fdf19706dd379e_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	attxw.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
4728	cmd.exe
3668	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
3668	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3184	rundll32.exe
3184	rundll32.exe
3184	rundll32.exe
3184	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3184	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4792	2026-05-07_fcc808db421de2f1d5fdf19706dd379e_elex_wannacry.exe
3552	attxw.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 4728	4792	2026-05-07_fcc808db421de2f1d5fdf19706dd379e_elex_wannacry.exe	79
PID 4728 wrote to memory of 3668	4728	cmd.exe	81
PID 4728 wrote to memory of 3552	4728	cmd.exe	82
PID 3552 wrote to memory of 3184	3552	attxw.exe	83

C:\Users\Admin\AppData\Local\Temp\2026-05-07_fcc808db421de2f1d5fdf19706dd379e_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-07_fcc808db421de2f1d5fdf19706dd379e_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\attxw.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-07_fcc808db421de2f1d5fdf19706dd379e_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4728
- - 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:3668
- - \??\c:\attxw.exe
    c:\attxw.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-07_fcc808db421de2f1d5fdf19706dd379e_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3552
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\wyimt\orimg.dll",DoVirusScan c:\attxw.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:3184

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

attxw.exe

Path C:\attxw.exe
Size 92KB
SHA256 d0826a72b8ed82e6ce6449960ba570bc8b7d221fa8b6a7b804d043e0aece7a5e
MD5 66d2d828fa14e634654f0992ab9e82ed
SHA1 cef382836e9f620c43c5477dbe189dd0c0a624c4
SHA512 2edc6438e7f4ae80793f421d4d505024e8711082998609178405b74ec2a6a5afc1bee3628d7f5d0c3d639eb6e7893e4eb91253cec81af9f0c24c6ac1e6fc0dd1
SSDEEP 1536:TSSABNx6vb4RoI47zzzzzzzzzvfxzVzNrzzzgzzzzzzzzzzzzzzzz6zzzdzzzzl2:eSABNx6vb4RoI4pyjHYLhal01UoPX+hb
TLSH
T1DE93AE17ABA989C9F1217C30566E373187BF985D3F1457579348EE4EA833D80EC3628A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

orimg.dll

Path \??\c:\wyimt\orimg.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

memory/3184-10-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/3184-11-0x0000000010001000-0x0000000010021000-memory.dmp

Download

memory/3184-12-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/3184-13-0x0000000010001000-0x0000000010021000-memory.dmp

Download

memory/3552-7-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/4792-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/4792-2-0x0000000000400000-0x0000000000417000-memory.dmp

Download