farfli | 45abbf7bffc27e8d635c741ad3f51d43e3f69a6682fc04f771f3a179b521307a

Analysis

max time kernel
150s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
20/07/2026, 11:43

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General

Target
2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_wannacry.exe
Size 150KB
Sample260720-nvvcvaa17t
SHA256 45abbf7bffc27e8d635c741ad3f51d43e3f69a6682fc04f771f3a179b521307a
MD5 66916d1e39cd30451f0ef388f56984cc
SHA1 7b72c47c77550fef7501594ff8417f622a1ba4a7
SHA512 1691dd8333d71fbc5ef5282cade899cc5161e1e454d28efa0b98d44e8a91b2b58e48a02a0c8ca6e393a17dafdc38dcfc2fe9a5bb61f8d603f86bde661540e2d6
SSDEEP 3072:x7qLZmhWAc+eB1zQavj53G2pPH+knVojoA8HBoJgTWVh:xQAPevzQav122xjVAZ8mGTy
TLSH
T185E3AE11A7D3897AE5765F764E771A63963DBC11CB3091C7A38C5C1F8E31FA0AA20306
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

aspackv2 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 8 IoCs

resource	yara_rule
behavioral2/memory/3880-9-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli
behavioral2/memory/3880-8-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli
behavioral2/memory/3880-7-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli
behavioral2/memory/3880-10-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli
behavioral2/memory/3880-12-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli
behavioral2/memory/3880-13-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli
behavioral2/memory/3880-14-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli
behavioral2/memory/3880-15-0x0000000010000000-0x0000000010027000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 8 IoCs

resource	yara_rule
behavioral2/memory/3880-9-0x0000000010000000-0x0000000010027000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3880-8-0x0000000010000000-0x0000000010027000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3880-7-0x0000000010000000-0x0000000010027000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3880-10-0x0000000010000000-0x0000000010027000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3880-12-0x0000000010000000-0x0000000010027000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3880-13-0x0000000010000000-0x0000000010027000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3880-14-0x0000000010000000-0x0000000010027000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3880-15-0x0000000010000000-0x0000000010027000-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
7	3880	rundll32.exe
9	3880	rundll32.exe
11	3880	rundll32.exe
10	3880	rundll32.exe
12	3880	rundll32.exe
13	3880	rundll32.exe
15	3880	rundll32.exe
17	3880	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000e00000001c545-4.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
3656	dmrmcu.exe

Executes dropped EXE 1 IoCs

pid	Process
3656	dmrmcu.exe

Loads dropped DLL 1 IoCs

pid	Process
3880	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-1-5-21-2301830172-776172150-2531349243-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rcvjg\\nffwp.fwn\",SHA1"	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	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)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\t:	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
3240	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	2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_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	dmrmcu.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
3240	cmd.exe
2716	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
2716	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe
3880	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3880	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4716	2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_wannacry.exe
3656	dmrmcu.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 3240	4716	2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_wannacry.exe	89
PID 3240 wrote to memory of 2716	3240	cmd.exe	91
PID 3240 wrote to memory of 3656	3240	cmd.exe	92
PID 3656 wrote to memory of 3880	3656	dmrmcu.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dmrmcu.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_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:3240
- - 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:2716
- - C:\Users\Admin\AppData\Local\Temp\dmrmcu.exe
    C:\Users\Admin\AppData\Local\Temp\\dmrmcu.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-20_66916d1e39cd30451f0ef388f56984cc_elex_strictor_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3656
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\rcvjg\nffwp.fwn",SHA1 C:\Users\Admin\AppData\Local\Temp\dmrmcu.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:3880

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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dmrmcu.exe

Path C:\Users\Admin\AppData\Local\Temp\dmrmcu.exe
Size 150KB
SHA256 1555ac8e9f94de79ffbbe13f20cc0f37220408cb23d58e065914a09d42f680af
MD5 1a3165f670c3270e2e9e180f1fcb3d56
SHA1 2285a0d41def17b32008a866c6d7bd45e8796923
SHA512 7d0b9ae214a34e1386d372df94ac25f7e9e024329d9b7aa9f434b47247f1284947cef28f669184e337e0a66ccc7365f528240e7463cb591b4972746074531c13
SSDEEP 3072:x7qLZmhWAc+eB1zQavj53G2pPH+knVojoA8HBoJgTWVs:xQAPevzQav122xjVAZ8mGTz
TLSH
T133E3AE11A7D3897AE9765F764E771A63963DBC11CB34A1C7A38C5C1F8E31FA0AA20305
MD5 SHA1 SHA512 SSDEEP TLSH

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nffwp.fwn

Path \??\c:\rcvjg\nffwp.fwn
Size 83KB
SHA256 489855558b5a997477f7c95a05e7adcbf6001e06bd80e29b01fdabdb006cdbbb
MD5 4993bd7ca91574843d5a608c532151a4
SHA1 72ff0d8e4ccee88738b3ab8bdb52b9474e0ef55e
SHA512 13418193723dace324d5b91a8162a09521640bc6e401c841bb0644de8ec9a762912f2afd588be8845a30b2f59ac10ab2eaa0b356068d1503792a30a826ed075c
SSDEEP 1536:gsK+5Zq1Wcd2M8D2BIvpEAqKfWD+3KtlAusG:lKgcd23D2BIRdwvvW
TLSH
T11983BE42BA950BBED0B912B604A2DB7543763C00EA2D978B31DD0DAF3E9419D4F753A8
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3880-6-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-9-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-8-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-7-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-10-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-12-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-13-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-14-0x0000000010000000-0x0000000010027000-memory.dmp

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memory/3880-15-0x0000000010000000-0x0000000010027000-memory.dmp

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