farfli | a757e5d219747839948d2b7977e0025941b86fc06ab7748ac7f6300b9f11d030

Analysis

max time kernel
150s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
05/07/2026, 05:02

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General

Target
2026-07-05_874736558206dcd50b0e535a439986a6_elex_wannacry.exe
Size 112KB
Sample260705-fpaggsdt8r
SHA256 a757e5d219747839948d2b7977e0025941b86fc06ab7748ac7f6300b9f11d030
MD5 874736558206dcd50b0e535a439986a6
SHA1 95605aa58f52e519df10a6d2eb0755e6a06a2ebf
SHA512 bacdce9da38b832c01532ca0f321ac90bd81131f5d989d2425f92f97b1d28d21f85bee8e4e73126be9bf06cc99703a265c27a9f470bfbe6fb43b8b0d848d0f22
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmyyF:ELRrO10TiJD9yjqrilyxOWPy
TLSH
T146B39D5D6D62C59EE4014B7043579725A2A2AC5DFA304F334380BA4EFF36E0BEDE9198
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 2 IoCs

resource	yara_rule
behavioral2/memory/6248-11-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/6248-13-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/6248-11-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/6248-13-0x0000000010000000-0x0000000010023000-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	6248	rundll32.exe
3	6248	rundll32.exe
4	6248	rundll32.exe
5	6248	rundll32.exe
7	6248	rundll32.exe
9	6248	rundll32.exe
10	6248	rundll32.exe
11	6248	rundll32.exe

Deletes itself 1 IoCs

pid	Process
6960	dvole.exe

Executes dropped EXE 1 IoCs

pid	Process
6960	dvole.exe

Loads dropped DLL 1 IoCs

pid	Process
6248	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-1-5-21-1935666426-3801330415-1166019131-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ubuxz\\zhijy.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)	\??\x:	rundll32.exe
File opened (read-only)	\??\l:	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)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	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	2026-07-05_874736558206dcd50b0e535a439986a6_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	dvole.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
6724	cmd.exe
4484	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
4484	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6248	rundll32.exe
6248	rundll32.exe
6248	rundll32.exe
6248	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6248	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
6908	2026-07-05_874736558206dcd50b0e535a439986a6_elex_wannacry.exe
6960	dvole.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 6908 wrote to memory of 6724	6908	2026-07-05_874736558206dcd50b0e535a439986a6_elex_wannacry.exe	88
PID 6724 wrote to memory of 4484	6724	cmd.exe	90
PID 6724 wrote to memory of 6960	6724	cmd.exe	91
PID 6960 wrote to memory of 6248	6960	dvole.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-07-05_874736558206dcd50b0e535a439986a6_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-05_874736558206dcd50b0e535a439986a6_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:6908
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dvole.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-05_874736558206dcd50b0e535a439986a6_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:6724
- - 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:4484
- - C:\Users\Admin\AppData\Local\Temp\dvole.exe
    C:\Users\Admin\AppData\Local\Temp\\dvole.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-05_874736558206dcd50b0e535a439986a6_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:6960
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ubuxz\zhijy.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\dvole.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:6248

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

dvole.exe

Path C:\Users\Admin\AppData\Local\Temp\dvole.exe
Size 112KB
SHA256 6cd9644bacc3032c42456015173e935359faa755714f8847e90848af8fc54e2a
MD5 44a0b5562555952a1c38ae2a2d1cd317
SHA1 6da2235a72f0f6eadf4113c301ab8780e0f1d0ef
SHA512 681ccaa77d0abf2dfece852c3e33cc2c655b17f3a430a4a011f5a01fad8ea13573234f38ed3b137d8d1c10212d6f7e1f352159981d9fd38b9f92a4cfda52db20
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmyyF1:ELRrO10TiJD9yjqrilyxOWPy3
TLSH
T1EBB39D5D6D62C59EE4015B7043579721A2A2AC5DFA304F334380BA4EFF36E0BEDE9198
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

zhijy.dll

Path \??\c:\ubuxz\zhijy.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/6248-9-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/6248-10-0x0000000002530000-0x0000000002532000-memory.dmp

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memory/6248-11-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/6248-13-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/6908-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/6908-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/6960-6-0x0000000000400000-0x0000000000417000-memory.dmp

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