farfli | 8b1bd323b726f808512e7fc2a69ee068232d09f041a090711228098712407cd5

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
27/07/2026, 22:40

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General

Target
2026-07-27_f7a9633dda974d8afb0c80d2800438cd_elex_wannacry.exe
Size 96KB
Sample260727-2lwffaserd
SHA256 8b1bd323b726f808512e7fc2a69ee068232d09f041a090711228098712407cd5
MD5 f7a9633dda974d8afb0c80d2800438cd
SHA1 f8a1095b3a2cbb989baa6a096e5c2c35f7f2b6fb
SHA512 f00f101ff817b8699d3ca2517450a5de6ed35b9059a609309b256e13570568ef6c9f6ad66c65e66ae3e575a38feb776e170faa70960b16cc8f568ca9937c1886
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6:el69Ml0TE
TLSH
T17AA3AE13ABA589C9F1217C70566D373187BED86E3F1457679348EE4EA433D80EC3628A
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 4 IoCs

resource	yara_rule
behavioral1/memory/5768-10-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral1/memory/5768-11-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral1/memory/5768-12-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral1/memory/5768-13-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/5768-10-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5768-12-0x0000000010000000-0x0000000010032000-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
4	5768	rundll32.exe
5	5768	rundll32.exe
6	5768	rundll32.exe
16	5768	rundll32.exe
31	5768	rundll32.exe
39	5768	rundll32.exe
49	5768	rundll32.exe
51	5768	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0008000000024657-8.dat	acprotect

Deletes itself 1 IoCs

pid	Process
3768	gdxuysmed.exe

Executes dropped EXE 1 IoCs

pid	Process
3768	gdxuysmed.exe

Loads dropped DLL 1 IoCs

pid	Process
5768	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-1-5-21-3053180483-1881419501-3594244048-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\vtejw\\njumbxrs.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)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\u:	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)	\??\o:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	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
416	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	2026-07-27_f7a9633dda974d8afb0c80d2800438cd_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	gdxuysmed.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
416	cmd.exe
6032	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
6032	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5768	rundll32.exe
5768	rundll32.exe
5768	rundll32.exe
5768	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5768	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2992	2026-07-27_f7a9633dda974d8afb0c80d2800438cd_elex_wannacry.exe
3768	gdxuysmed.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 416	2992	2026-07-27_f7a9633dda974d8afb0c80d2800438cd_elex_wannacry.exe	87
PID 416 wrote to memory of 6032	416	cmd.exe	89
PID 416 wrote to memory of 3768	416	cmd.exe	90
PID 3768 wrote to memory of 5768	3768	gdxuysmed.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-27_f7a9633dda974d8afb0c80d2800438cd_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-27_f7a9633dda974d8afb0c80d2800438cd_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\gdxuysmed.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-27_f7a9633dda974d8afb0c80d2800438cd_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:416
- - 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:6032
- - \??\c:\gdxuysmed.exe
    c:\gdxuysmed.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-27_f7a9633dda974d8afb0c80d2800438cd_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3768
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\vtejw\njumbxrs.dll",DoVirusScan c:\gdxuysmed.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:5768

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

gdxuysmed.exe

Path C:\gdxuysmed.exe
Size 96KB
SHA256 17b0d79a2f88c46fc2c7b59d89573405bc4b0d50b88b70c4d1b6f9d7875e826a
MD5 c68525280fee462d49b825629ccc85dd
SHA1 255e50f9e3106be748685bec08bbd9c93d0801b7
SHA512 7cd983ac21e83b633bff556950549496d0e4acf6f7afd5e83b193609090d1b0bca79626e99e4fb9b86e82f38160ca19dee6ea94966475c0bb87368db0b97ba76
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6t:el69Ml0TEK
TLSH
T1CEA39D03ABA589D9F1217C70566D373187BEDC5E3B1457679348EE4EA433E80EC3628A
MD5 SHA1 SHA512 SSDEEP TLSH

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njumbxrs.dll

Path \??\c:\vtejw\njumbxrs.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

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memory/2992-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2992-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3768-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5768-10-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/5768-11-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/5768-12-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/5768-13-0x0000000010001000-0x0000000010021000-memory.dmp

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