farfli | 043c6e9e2cccbdebe993f571a440966469db9f18c7ad9ac1854f0724ff34359d

Analysis

max time kernel
148s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/07/2026, 16:32

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General

Target
2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_elex_wannacry.exe
Size 95KB
Sample260727-t2e5dsca75
SHA256 043c6e9e2cccbdebe993f571a440966469db9f18c7ad9ac1854f0724ff34359d
MD5 3b77ebca4c795bea72dfb6b9fe0c920a
SHA1 93be89e28eccf79b1ce39f5dfb8cb62a9aa3ddd5
SHA512 70769574d183b4e3b31bcfec1628b03aaf75e539d60d8cdbd80f2e152feff546faf85ffa665ef55c4a2097f4a533e06cefa4eeb60ddf156fa1b911ff970a542b
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6u:uLRrO10TiJD9yjqrilyxOuPp6u
TLSH
T1ACA3BF1DAD5388AED0014B3147579715E6B2AC1AF9714F334350FA1DEF3290BEEDA288
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
behavioral2/memory/2176-11-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/2176-13-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/2176-14-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/2176-11-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2176-13-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2176-14-0x0000000010000000-0x0000000010023000-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
7	2176	rundll32.exe
8	2176	rundll32.exe
9	2176	rundll32.exe
11	2176	rundll32.exe
12	2176	rundll32.exe
16	2176	rundll32.exe
19	2176	rundll32.exe
20	2176	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4840	rckcc.exe

Executes dropped EXE 1 IoCs

pid	Process
4840	rckcc.exe

Loads dropped DLL 1 IoCs

pid	Process
2176	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-1-5-21-3989226554-2204910950-1522900112-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\htzlh\\joxwuvnlh.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)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	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
5872	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rckcc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
5872	cmd.exe
2804	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
2804	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe
2176	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5844	2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_elex_wannacry.exe
4840	rckcc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5844 wrote to memory of 5872	5844	2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_elex_wannacry.exe	89
PID 5872 wrote to memory of 2804	5872	cmd.exe	91
PID 5872 wrote to memory of 4840	5872	cmd.exe	92
PID 4840 wrote to memory of 2176	4840	rckcc.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5844
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rckcc.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_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:5872
- - 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:2804
- - C:\Users\Admin\AppData\Local\Temp\rckcc.exe
    C:\Users\Admin\AppData\Local\Temp\\rckcc.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-27_3b77ebca4c795bea72dfb6b9fe0c920a_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4840
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\htzlh\joxwuvnlh.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\rckcc.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:2176

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

rckcc.exe

Path C:\Users\Admin\AppData\Local\Temp\rckcc.exe
Size 96KB
SHA256 f7dcbeae2df43cbbafcc84e2607fe33a718e74b020760259ff3829e1fec60172
MD5 e22b3115f3596755eb8a6a07c536c89d
SHA1 acd3e99deb8e8a6b6664ef8cff32791f6477da3b
SHA512 b5ef0b8b44d15b2cd7b3c69ffdbde391c9a4125f3fe5ca3b9846147a75ea63a4ecd1d0535be2376cb0faf2476c11b53a33c15b3033bb9fe7cbbea5054d96cf9a
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp63:uLRrO10TiJD9yjqrilyxOuPp63
TLSH
T109A3BF1DAD52C9AEE0054B7143579715E6B2AC19F9704F334350FA1DEF3290BEEDA288
MD5 SHA1 SHA512 SSDEEP TLSH

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joxwuvnlh.dll

Path \??\c:\htzlh\joxwuvnlh.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/2176-9-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2176-10-0x0000000000F00000-0x0000000000F02000-memory.dmp

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memory/2176-11-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2176-13-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2176-14-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/4840-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5844-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5844-2-0x0000000000400000-0x0000000000417000-memory.dmp

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