farfli | 6d56a7fb124b8d8ffb9be6ca115cbaac76085d00c2c6057155c2d9b472b98b37

General

Target
2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_elex_wannacry.exe
Size 96KB
Sample260707-mn68dsf13t
SHA256 6d56a7fb124b8d8ffb9be6ca115cbaac76085d00c2c6057155c2d9b472b98b37
MD5 4198de2c20dbc30a49afdf8d50eb7e32
SHA1 abc14e1ea0a6e18b6a628c94ffe0b93d1b4d6d0c
SHA512 0e8085ceae9c6458d363e3ae5c245e84afb58bfe46698939542a901f8aae29987850a95d18ff777080a6fca04fc227f87697134647994b0d41da8bbb527347f9
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6:el69Ml0TE
TLSH
T16CA3AE07ABA589C9F1217C30566D373187BFA85E3F1457679348EE4EA433D80EC3628A
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 1 IoCs

resource	yara_rule
behavioral2/memory/6064-10-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 1 IoCs

resource	yara_rule
behavioral2/memory/6064-10-0x0000000010000000-0x0000000010032000-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	6064	rundll32.exe
3	6064	rundll32.exe
4	6064	rundll32.exe
6	6064	rundll32.exe
7	6064	rundll32.exe
9	6064	rundll32.exe
10	6064	rundll32.exe
11	6064	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000e00000001c4c3-7.dat	acprotect

Deletes itself 1 IoCs

pid	Process
4232	ewpqd.exe

Executes dropped EXE 1 IoCs

pid	Process
4232	ewpqd.exe

Loads dropped DLL 1 IoCs

pid	Process
6064	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-1-5-21-2626306573-1585762579-411806764-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\krefjakp\\zwusx.dll\",DoVirusScan"	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)	\??\d:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	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

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	2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_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	ewpqd.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
4468	PING.EXE
952	cmd.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
4468	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6064	rundll32.exe
6064	rundll32.exe
6064	rundll32.exe
6064	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6064	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3664	2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_elex_wannacry.exe
4232	ewpqd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3664 wrote to memory of 952	3664	2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_elex_wannacry.exe	88
PID 952 wrote to memory of 4468	952	cmd.exe	90
PID 952 wrote to memory of 4232	952	cmd.exe	91
PID 4232 wrote to memory of 6064	4232	ewpqd.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3664
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\ewpqd.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:952
- - 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:4468
- - \??\c:\ewpqd.exe
    c:\ewpqd.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-07_4198de2c20dbc30a49afdf8d50eb7e32_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4232
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\krefjakp\zwusx.dll",DoVirusScan c:\ewpqd.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:6064

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

ewpqd.exe

Path \??\c:\ewpqd.exe
Size 97KB
SHA256 821f49b0d40cfc75e41e4140f24a87c6b23e2966f8aa4e7a949eeae9aea500fc
MD5 f2e16ae6e5d71ad73ee03436d5f5dbf5
SHA1 dfe8416f28c092b1074b6cbb44cb99a95b65a353
SHA512 9b2a700d1ac70553b8db0e9079c608423b12e025629c87f282b4df39e1a56a8ef636b5441f8be5fb0b64aafc40ad9b19ba69062020953cc9ca9f1b813df5a4d3
SSDEEP 3072:eSABNx6vb4RoI4pyjHYLhal01UoPX+hwo6B:el69Ml0TE+
TLSH
T1C7A3AE07ABA589C9F1217C70566E373187BED85E3F1457679348EE4EA433D80EC3628A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

zwusx.dll

Path \??\c:\krefjakp\zwusx.dll
Size 50KB
SHA256 b2d21c40c5bfc0f7695945946fa1cdd4eaf2f66a8391ddde6307c5f765fbf525
MD5 cbfc06794d16ace6adf42210183fc1b9
SHA1 74fc68a2af225b0aca954b3684940747511013c5
SHA512 181dbe8b63e28a81cb8e0b7240df8745da350e1ab433b157b8b4fd36aa10f0782e807c09563bcffe37cfe64aa1b514b2cc1f179fbcba422d96867179d88e13c9
SSDEEP 768:Z+arYIR3u5v4bGwCl56LNQQe5JBtGf1oTYtx/qQvorLOpqPJ/UP2Gy+OIudD05:ZPrG57TzDxJS6Etx/Zv2OwSy+OIOD05
TLSH
T15733F1ACE2F064F5D0AF6B345952225CF5C26F238D3190DB4A8214BF3C32A5B5B5E721
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3664-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/3664-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4232-6-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/6064-9-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/6064-10-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads