farfli | d6f16eaf629d0a1c4e267131cf170bd1a59ec8a70110b274794ec6e66eeee8b2

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
09/08/2026, 09:52

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General

Target
2026-08-09_bab863bc986109cfec6e800096ad5aee_elex_wannacry.exe
Size 157KB
Sample260809-lv8t5avfmb
SHA256 d6f16eaf629d0a1c4e267131cf170bd1a59ec8a70110b274794ec6e66eeee8b2
MD5 bab863bc986109cfec6e800096ad5aee
SHA1 9bddff4a08edfbb1021e02f92d5d796c0414df5c
SHA512 e99f2700a6072377eee0797c51532b1f80cef779d1a34ec089295a6b92ac1bf5ff601768229479af766b40b66dbb2a86a0e3c1f53bb8f2f0b11867c22f8275eb
SSDEEP 3072:xK4RNx65b4RoIwZpx10ZENfrGSQ7sDU/ySkNAq:xl65xiZuKoDkySkNA
TLSH
T154F3CFCE2F6ACFDBD2205C75D0B416F792569C99DA2147978385FC9EB432CC19C3222A
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 2 IoCs

resource	yara_rule
behavioral2/memory/3856-11-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral2/memory/3856-12-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/3856-11-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3856-12-0x0000000010000000-0x000000001002E000-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
4	3856	rundll32.exe
5	3856	rundll32.exe
6	3856	rundll32.exe
12	3856	rundll32.exe
13	3856	rundll32.exe
15	3856	rundll32.exe
18	3856	rundll32.exe
19	3856	rundll32.exe

Deletes itself 1 IoCs

pid	Process
120	isnythe.exe

Executes dropped EXE 1 IoCs

pid	Process
120	isnythe.exe

Loads dropped DLL 1 IoCs

pid	Process
3856	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-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\apvqie\\yoqqe.dll\",init"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	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)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	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
3992	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-09_bab863bc986109cfec6e800096ad5aee_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	isnythe.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
3992	cmd.exe
3312	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3312	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3856	rundll32.exe
3856	rundll32.exe
3856	rundll32.exe
3856	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3856	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5712	2026-08-09_bab863bc986109cfec6e800096ad5aee_elex_wannacry.exe
120	isnythe.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5712 wrote to memory of 3992	5712	2026-08-09_bab863bc986109cfec6e800096ad5aee_elex_wannacry.exe	88
PID 3992 wrote to memory of 3312	3992	cmd.exe	90
PID 3992 wrote to memory of 120	3992	cmd.exe	91
PID 120 wrote to memory of 3856	120	isnythe.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-08-09_bab863bc986109cfec6e800096ad5aee_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_bab863bc986109cfec6e800096ad5aee_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5712
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\isnythe.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_bab863bc986109cfec6e800096ad5aee_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:3992
- - 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:3312
- - \??\c:\isnythe.exe
    c:\isnythe.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_bab863bc986109cfec6e800096ad5aee_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:120
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\apvqie\yoqqe.dll",init c:\isnythe.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:3856

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

yoqqe.dll

Path \??\c:\apvqie\yoqqe.dll
Size 42KB
SHA256 c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7
MD5 36e3fb5964d663272cf1169e1e1ca478
SHA1 58115e08b49505bcbbb5c88a28a86222ba18d5d4
SHA512 daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442
SSDEEP 768:t0inj1jJ5OeUMhBNSqHvMjjAipMkuG30sv2xEZkWldADAKPIp:t0ipV5uMhBt0jjAiusv22ZkWTOAKP8
TLSH
T1D813E19B6BEC7029FDD22BB4F4F66815EEB63F388CB2C70E114941AB1C3A9D51251706
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

isnythe.exe

Path \??\c:\isnythe.exe
Size 157KB
SHA256 72fde7f6060a1b0e08faa8926b4918353f29d983b2581fa6b69c3beafd4946cf
MD5 423ba4d51f571395fa460a4b1203646b
SHA1 dbad71c2904c94fd603229ea9a8ab75451e71dc5
SHA512 eb710ca58f92144aa68c5341d8da746ccefc699f7b22a5e3b63486a04d7ea8e77326036d5f44331f26aa638548f1ad267c4a90213fefb3653f9f53f7baaee030
SSDEEP 3072:xK4RNx65b4RoIwZpx10ZENfrGSQ7sDU/ySkNAqA:xl65xiZuKoDkySkNAT
TLSH
T10EF3D0CE2F6ACFDBE2201C75D0A416F752569C99DB2147978385FC9EB432CC19C3222A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/120-6-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/3856-9-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/3856-10-0x0000000000D40000-0x0000000000D41000-memory.dmp

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memory/3856-11-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/3856-12-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/5712-0-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/5712-2-0x0000000000400000-0x0000000000426000-memory.dmp

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