farfli | 49af04b47f656da5ef04c62f96bd1df753f7daa4fdd7db8ae46785b5ff97a8ac

General

Target
2026-07-04_444ae835494842afbe97d493a657ffb2_elex_wannacry.exe
Size 126KB
Sample260704-e1fl7sa14t
SHA256 49af04b47f656da5ef04c62f96bd1df753f7daa4fdd7db8ae46785b5ff97a8ac
MD5 444ae835494842afbe97d493a657ffb2
SHA1 fe17b76fa13ae9d09804916b64fb3fe27898de18
SHA512 782b50b0b2271354e4371f539356e7991b38cb264b29b8d7ee367ce8b072716f93d366ec2c5b08b784c00fbff16cee90eb16633c908596ffb379405797736a85
SSDEEP 1536:f/6EkrKHqgGFs5N6s7H3dPT+X/O3DX6HZ9am1AEgHZ5bdpDvkDBlxZP1n:fSKP3Pe/Oz67aKVgbbdpDcljZ9n
TLSH
T151C3BF527A6085F0E01645335357AB3187B1EC1E3A1813EE93C8FE0FBD65625ECBB299
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer upx

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/5168-9-0x0000000010000000-0x0000000010030000-memory.dmp	family_farfli
behavioral2/memory/5168-10-0x0000000010000000-0x0000000010030000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/5168-9-0x0000000010000000-0x0000000010030000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5168-10-0x0000000010000000-0x0000000010030000-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	5168	rundll32.exe
3	5168	rundll32.exe
4	5168	rundll32.exe
5	5168	rundll32.exe
7	5168	rundll32.exe
8	5168	rundll32.exe
10	5168	rundll32.exe
11	5168	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2412	tcaae.exe

Executes dropped EXE 1 IoCs

pid	Process
2412	tcaae.exe

Loads dropped DLL 1 IoCs

pid	Process
5168	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-1-5-21-2132828192-1552876075-2324613956-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\vgmyc\\izrwri.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)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/920-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/memory/920-2-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/files/0x000c000000019cb6-3.dat	upx
behavioral2/memory/2412-6-0x0000000000400000-0x000000000041E000-memory.dmp	upx

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	2026-07-04_444ae835494842afbe97d493a657ffb2_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	tcaae.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
2284	cmd.exe
980	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
980	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5168	rundll32.exe
5168	rundll32.exe
5168	rundll32.exe
5168	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5168	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
920	2026-07-04_444ae835494842afbe97d493a657ffb2_elex_wannacry.exe
2412	tcaae.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 2284	920	2026-07-04_444ae835494842afbe97d493a657ffb2_elex_wannacry.exe	88
PID 2284 wrote to memory of 980	2284	cmd.exe	90
PID 2284 wrote to memory of 2412	2284	cmd.exe	91
PID 2412 wrote to memory of 5168	2412	tcaae.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-07-04_444ae835494842afbe97d493a657ffb2_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-04_444ae835494842afbe97d493a657ffb2_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:920
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tcaae.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-04_444ae835494842afbe97d493a657ffb2_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2284
- - 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:980
- - C:\Users\Admin\AppData\Local\Temp\tcaae.exe
    C:\Users\Admin\AppData\Local\Temp\\tcaae.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-04_444ae835494842afbe97d493a657ffb2_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2412
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\vgmyc\izrwri.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\tcaae.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:5168

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

tcaae.exe

Path C:\Users\Admin\AppData\Local\Temp\tcaae.exe
Size 127KB
SHA256 3b0705591ef2b707f0aaf0625ffc17d535df71ec5e4bd588abdeb41fb9c43202
MD5 32fcf0a7263d806bd9089bd8f2323971
SHA1 2f3724893be27d5f2338ca97888b42466044c2ed
SHA512 7dbd788100372755bfee8df51a0994c967bdfa10eed2225e5985195a13a9f0022fe3bb2bda9d0ccd101aeaba5d0f66f06d40006e586cfb3f3b4fa57f7b62138c
SSDEEP 1536:f/6EkrKHqgGFs5N6s7H3dPT+X/O3DX6HZ9am1AEgHZ5bdpDvkDBlxZP1nD:fSKP3Pe/Oz67aKVgbbdpDcljZ9nD
TLSH
T100D3BF527A6085F0E01645335357AB3187B1EC1E3A1813EE93C8FE0FBD65625EDBB298
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

izrwri.dll

Path \??\c:\vgmyc\izrwri.dll
Size 59KB
SHA256 12264670242948b129acc4d9cd80cdf83fac88e662c09a57ce5ac6b39510618d
MD5 8552951ec6ab253e038ffc809235b08c
SHA1 c59e347bfebd96c0e4b60a0d33b5923fb137af55
SHA512 17864dfff89f397c647ec02926cfd639e33a05061cb6164756afd3d8c4e24281cba9c4770d16927ba56e1e02a139faf970748bfe07454f4528eab9f87e2c0cd9
SSDEEP 1536:x0u5H+DyujZ2uoHzCf/IYmRGMJnc7Z4ch:x04eDyY/oH8SIMJncNnh
TLSH
T12843F21CE351855BDAAB0672678F6F407A238A7F5B32485A914C2454BF3BE77C937380
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/920-0-0x0000000000400000-0x000000000041E000-memory.dmp

Download

memory/920-2-0x0000000000400000-0x000000000041E000-memory.dmp

Download

memory/2412-6-0x0000000000400000-0x000000000041E000-memory.dmp

Download

memory/5168-9-0x0000000010000000-0x0000000010030000-memory.dmp

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memory/5168-10-0x0000000010000000-0x0000000010030000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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