farfli | f6fa39ec6a4afa564f312fb63bc5dd5e0371ccac60d714715c2a7b9b0cdc7b67

General

Target
2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_elex_wannacry.exe
Size 125KB
Sample260802-nyl6msyxew
SHA256 f6fa39ec6a4afa564f312fb63bc5dd5e0371ccac60d714715c2a7b9b0cdc7b67
MD5 428c15c163f8c9b4a54fc24df7cc179b
SHA1 1810f4172d4595db96bf6a4c720e040ced3900c3
SHA512 1c54d6e725de864a2a04a558dcaf46ee30f79f9df7400e7cc0f37ea567fd0a96f2ac899f281b8528e03745e92fcf06439836dbc8d613711abfbce0d815aa4fee
SSDEEP 1536:f/6EkrKHqgGFs5N6s7H3dPT+X/O3DX6HZ9am1AEgHZ5bdpDvkDBlxZP1nC:fSKP3Pe/Oz67aKVgbbdpDcljZ9nC
TLSH
T15AC3AF527A6085F0E01645335397AB3187B1EC1E3A1813EE93C8FE0FBD65625EDBB198
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution 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
behavioral1/memory/3080-10-0x0000000010000000-0x0000000010030000-memory.dmp	family_farfli
behavioral1/memory/3080-11-0x0000000010000000-0x0000000010030000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/3080-10-0x0000000010000000-0x0000000010030000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3080-11-0x0000000010000000-0x0000000010030000-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
8	3080	rundll32.exe
9	3080	rundll32.exe
10	3080	rundll32.exe
24	3080	rundll32.exe
39	3080	rundll32.exe
47	3080	rundll32.exe
63	3080	rundll32.exe
65	3080	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1176	fhuntlorn.exe

Executes dropped EXE 1 IoCs

pid	Process
1176	fhuntlorn.exe

Loads dropped DLL 1 IoCs

pid	Process
3080	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-1-5-21-2370214745-1838013427-2987045292-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\zutwg\\eanql.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)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	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)	\??\e:	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\x:	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
behavioral1/memory/4552-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/memory/4552-2-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/files/0x000f00000002445c-4.dat	upx
behavioral1/memory/1176-7-0x0000000000400000-0x000000000041E000-memory.dmp	upx

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
4888	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	2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_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	fhuntlorn.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
4888	cmd.exe
1684	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
1684	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3080	rundll32.exe
3080	rundll32.exe
3080	rundll32.exe
3080	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3080	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4552	2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_elex_wannacry.exe
1176	fhuntlorn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 4888	4552	2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_elex_wannacry.exe	85
PID 4888 wrote to memory of 1684	4888	cmd.exe	87
PID 4888 wrote to memory of 1176	4888	cmd.exe	88
PID 1176 wrote to memory of 3080	1176	fhuntlorn.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fhuntlorn.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_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:4888
- - 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:1684
- - C:\Users\Admin\AppData\Local\Temp\fhuntlorn.exe
    C:\Users\Admin\AppData\Local\Temp\\fhuntlorn.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-02_428c15c163f8c9b4a54fc24df7cc179b_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1176
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\zutwg\eanql.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\fhuntlorn.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:3080

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

fhuntlorn.exe

Path C:\Users\Admin\AppData\Local\Temp\fhuntlorn.exe
Size 125KB
SHA256 8a86de0489d7142105a8a6a1a67978a894cb44857fd239699d518711eb454046
MD5 50486cb1fa70e3568e3a7d70570db97d
SHA1 d6f100b144efb987851e32ff908a4f7a6813004e
SHA512 90cc6cf6d211777bcfdb656cf462396a49d1a378064381e8618acad322219ef8bb45ed9e9b8464fafce0f5e3e3df28d2ed29f5b258315a22e7c0924d34ef1238
SSDEEP 1536:f/6EkrKHqgGFs5N6s7H3dPT+X/O3DX6HZ9am1AEgHZ5bdpDvkDBlxZP1nE:fSKP3Pe/Oz67aKVgbbdpDcljZ9nE
TLSH
T1DCC3AE527A6085F0E01645335397AB3187B1EC1E3A1813EE93C8FE0FBD65625EDBB198
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

eanql.dll

Path \??\c:\zutwg\eanql.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/1176-7-0x0000000000400000-0x000000000041E000-memory.dmp

Download

memory/3080-10-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/3080-11-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/4552-0-0x0000000000400000-0x000000000041E000-memory.dmp

Download

memory/4552-2-0x0000000000400000-0x000000000041E000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads