farfli | 9cc18169e9f6d3a6c973fe7c8ffa95728242ff18b27603ffae174ee45d166704

Analysis

max time kernel
150s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/07/2026, 16:15

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General

Target
2026-07-12_b821d74926e91dacd2088cfadc3ab84e_elex_wannacry.exe
Size 94KB
Sample260712-tqflsaez2x
SHA256 9cc18169e9f6d3a6c973fe7c8ffa95728242ff18b27603ffae174ee45d166704
MD5 b821d74926e91dacd2088cfadc3ab84e
SHA1 7cff4fff5493979cc9bfaf96b3da4135343814c7
SHA512 dedcfc308a262abc8782033e2c60530d872522d9a9e7e803be0ccf5a5650b9192bda537532a9fa875bb3c841a62f89da6eac94296e2a5f09b13b46a1c0acba1e
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6g:uLRrO10TiJD9yjqrilyxOuPp6g
TLSH
T1A593CF1DBD93886ED0058B3147579715E6B2AC59F9314F334350FA2DAF3290BEEDA288
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 3 IoCs

resource	yara_rule
behavioral2/memory/3704-11-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/3704-13-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/3704-14-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/3704-11-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3704-13-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3704-14-0x0000000010000000-0x0000000010023000-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
2	3704	rundll32.exe
3	3704	rundll32.exe
4	3704	rundll32.exe
6	3704	rundll32.exe
7	3704	rundll32.exe
8	3704	rundll32.exe
10	3704	rundll32.exe
11	3704	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5556	nguze.exe

Executes dropped EXE 1 IoCs

pid	Process
5556	nguze.exe

Loads dropped DLL 1 IoCs

pid	Process
3704	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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\pdtisopss\\chnoxoyh.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)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	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)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\q:	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	2026-07-12_b821d74926e91dacd2088cfadc3ab84e_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	nguze.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
3472	cmd.exe
6080	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
6080	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3704	rundll32.exe
3704	rundll32.exe
3704	rundll32.exe
3704	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3704	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4380	2026-07-12_b821d74926e91dacd2088cfadc3ab84e_elex_wannacry.exe
5556	nguze.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4380 wrote to memory of 3472	4380	2026-07-12_b821d74926e91dacd2088cfadc3ab84e_elex_wannacry.exe	87
PID 3472 wrote to memory of 6080	3472	cmd.exe	89
PID 3472 wrote to memory of 5556	3472	cmd.exe	90
PID 5556 wrote to memory of 3704	5556	nguze.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-12_b821d74926e91dacd2088cfadc3ab84e_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-12_b821d74926e91dacd2088cfadc3ab84e_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nguze.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-12_b821d74926e91dacd2088cfadc3ab84e_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3472
- - 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:6080
- - C:\Users\Admin\AppData\Local\Temp\nguze.exe
    C:\Users\Admin\AppData\Local\Temp\\nguze.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-12_b821d74926e91dacd2088cfadc3ab84e_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5556
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\pdtisopss\chnoxoyh.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\nguze.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:3704

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

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Downloads

nguze.exe

Path C:\Users\Admin\AppData\Local\Temp\nguze.exe
Size 94KB
SHA256 f47731fcc143224cd67610c5359caea7c68418b8823777dc1da0ef5e19dad237
MD5 30250956fe81f907c7f4b3fcdaf53f10
SHA1 32ecbbfd6da12e769790c1cfafd1221a3a572c73
SHA512 e3d2624c25feade1b547c941368b32feec456e363592b9c52786b70a57f293464bb2a90720f4a2a417db755bbd3ea19ff1a960c21111b255cdff596a0735e61a
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6y:uLRrO10TiJD9yjqrilyxOuPp6y
TLSH
T19693CF1DBD5389AEE0058B3147579715E6B2AC19F9314F334350FA1DAF3290BEEDA288
MD5 SHA1 SHA512 SSDEEP TLSH

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chnoxoyh.dll

Path \??\c:\pdtisopss\chnoxoyh.dll
Size 44KB
SHA256 9111c1eb1f0b59dcd49cfd5a0abc0ba100ac59a3bcae8623ff091dfdc46fed3c
MD5 0f12a7d509b2c9bb9b4cd6d8a0325e86
SHA1 f5fb59ad4f0633d115b06f35a2dc161dc4367157
SHA512 e3c84a643ff0a2627daba8a056221985a472aaf07bade61b3e9459db4bfc8792c1347606911e3fcc01581508004b18b5435bcccd5e7617cc6d091f37a5f42e7f
SSDEEP 768:DICzePjle2367kjhrXLdCuYMW8QVnwrLDGe/brbtJyOTuXfADVjeJ2i/MVJWAE:DDePjA23Ukjh37YMonwrvGybrbbRCf4E
TLSH
T1FD23F1A7B94E8D4FC0AE41F7078FC8D422B5589A97A7CB4626008F216CC4FB07E52376
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3704-9-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3704-10-0x0000000002DA0000-0x0000000002DA2000-memory.dmp

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memory/3704-11-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3704-13-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3704-14-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/4380-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4380-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5556-6-0x0000000000400000-0x0000000000417000-memory.dmp

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