farfli | 561e89205465e7ae1f564fcf5eb88034f3578d5703f31207f0634b8560b2f474

Analysis

max time kernel
150s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/11/2026, 06:52

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-11-11_bd985747f7221a4bacceb21e5d664057_elex_wannacry.exe
Size 90KB
Sample261112-hnd5dsde93
SHA256 561e89205465e7ae1f564fcf5eb88034f3578d5703f31207f0634b8560b2f474
MD5 bd985747f7221a4bacceb21e5d664057
SHA1 14dfc935e73f9a4966ba2f49881e7dc7afeb5f59
SHA512 95c3731a9c4593dd292c63e6a82426060d7ccbaac67b98aaff2fcb5a8199a4f12e15a01f4129b93788cea8fe89fded1427d6ea74ad61b59131c4bb222ff39f39
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyo:uLRrO10TiJD9yjqrilyxOuPo
TLSH
T1A7939D1C6D52C99EE0058B7043479721A6A2AC59FA304F334380BA5EFF36D1BEDE9198
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution 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/3740-11-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/3740-15-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/3740-11-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3740-15-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 3 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
2	3740	rundll32.exe
3	3740	rundll32.exe
13	3740	rundll32.exe

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5084	jogsaqn.exe

Executes dropped EXE 1 IoCs

pid	Process
5084	jogsaqn.exe

Loads dropped DLL 1 IoCs

pid	Process
3740	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-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\fdqwe\\vyhpbxr.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)	\??\o:	rundll32.exe
File opened (read-only)	\??\v:	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)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	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)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	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)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\a:	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)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	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
5880	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jogsaqn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-11-11_bd985747f7221a4bacceb21e5d664057_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
5880	cmd.exe
6136	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
6136	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3740	rundll32.exe
3740	rundll32.exe
3740	rundll32.exe
3740	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3740	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3648	2026-11-11_bd985747f7221a4bacceb21e5d664057_elex_wannacry.exe
5084	jogsaqn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 5880	3648	2026-11-11_bd985747f7221a4bacceb21e5d664057_elex_wannacry.exe	91
PID 5880 wrote to memory of 6136	5880	cmd.exe	93
PID 5880 wrote to memory of 5084	5880	cmd.exe	94
PID 5084 wrote to memory of 3740	5084	jogsaqn.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-11-11_bd985747f7221a4bacceb21e5d664057_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-11_bd985747f7221a4bacceb21e5d664057_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\jogsaqn.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-11_bd985747f7221a4bacceb21e5d664057_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:5880
- - 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:6136
- - C:\Users\Admin\AppData\Local\Temp\jogsaqn.exe
    C:\Users\Admin\AppData\Local\Temp\\jogsaqn.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-11_bd985747f7221a4bacceb21e5d664057_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5084
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\fdqwe\vyhpbxr.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\jogsaqn.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)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3740

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:1348

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

Indicator Removal

T1070

File Deletion

T1070.004

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

Replay Monitor

Loading Replay Monitor...

Downloads

jogsaqn.exe

Path C:\Users\Admin\AppData\Local\Temp\jogsaqn.exe
Size 91KB
SHA256 2fcedc9e54b5e1dde05dcb0317dfe5a31f7f0e325848406cfb4da22c27ffcf9d
MD5 8bfd5e933c78fe187922e9e1e7190a70
SHA1 f8732518c77c6dedfc585aed9205e60e9f493c8c
SHA512 b2295f58f3d698c95a75b0f3a60110e79203cf04f5eb02ca5d973c6107124b6f5ac020ff1f8facf2373bf64c39b9b2fac1a566dae845cb46be88e8f12cc369ff
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp:uLRrO10TiJD9yjqrilyxOuPp
TLSH
T1A8939D1D6D52C99EE4054B7043479621A6A2AC59FA304F334380BB4EEF36E1BEDE91D8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

vyhpbxr.dll

Path \??\c:\fdqwe\vyhpbxr.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/3648-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/3648-2-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/3740-9-0x0000000010000000-0x0000000010023000-memory.dmp

Download

memory/3740-10-0x0000000002F70000-0x0000000002F72000-memory.dmp

Download

memory/3740-12-0x0000000002F70000-0x0000000002F72000-memory.dmp

Download

memory/3740-11-0x0000000010000000-0x0000000010023000-memory.dmp

Download

memory/3740-15-0x0000000010000000-0x0000000010023000-memory.dmp

Download

memory/5084-6-0x0000000000400000-0x0000000000417000-memory.dmp

Download