farfli | 9caf3410e1a657e5f038ae96e2c7f99f5793b9fccbfc983d9f3b05b7213a4e54

General

Target
2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_elex_wannacry.exe
Size 363KB
Sample260523-ttwr6sf14s
SHA256 9caf3410e1a657e5f038ae96e2c7f99f5793b9fccbfc983d9f3b05b7213a4e54
MD5 7c88a9dba6bf1647d390ba6738c5d4f5
SHA1 51b746726120578e95d0ddba8551f657c4e66b09
SHA512 5fe2b5c0f55f5b115f4b90a5df2d7ab70525bcefceb3f9f4284c38d765da1356e2e3e4bdf5f26e64fc34bcad128e98d60ac1f2a304f1fe87631e84dea0fd45b5
SSDEEP 6144:XO1ehJTKCz6udyYsf8Be8k/7g/Qnqj2aZQLdkm51bfWY627bCK64Nrr:GeHTp+o7Ve57g/VDZ6km51bfWYhC
TLSH
T14F84DF6275D7C8A2C6C67532CDA6E6B0E3E9CF58C871A97B07BC3ACC3E355009306265
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 3 IoCs

resource	yara_rule
behavioral2/memory/2784-10-0x0000000010000000-0x0000000010086000-memory.dmp	family_farfli
behavioral2/memory/2784-9-0x0000000010000000-0x0000000010086000-memory.dmp	family_farfli
behavioral2/memory/2784-12-0x0000000010000000-0x0000000010086000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/2784-10-0x0000000010000000-0x0000000010086000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2784-9-0x0000000010000000-0x0000000010086000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2784-12-0x0000000010000000-0x0000000010086000-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
1	2784	rundll32.exe
2	2784	rundll32.exe
3	2784	rundll32.exe
4	2784	rundll32.exe
5	2784	rundll32.exe
6	2784	rundll32.exe
7	2784	rundll32.exe
8	2784	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2404	vonpehor.exe

Executes dropped EXE 1 IoCs

pid	Process
2404	vonpehor.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	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-1-5-21-2043432456-1617298091-2772621413-1000\Software\Microsoft\Windows\CurrentVersion\Run\Micro = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\qpcoes\\dabos.dll\",method"	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)	\??\l:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\q:	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)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\qpcoes	vonpehor.exe
File created	\??\c:\Program Files\qpcoes\dabos.dll	vonpehor.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	vonpehor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_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

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
4956	cmd.exe
3968	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
3968	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2784	rundll32.exe
2784	rundll32.exe
2784	rundll32.exe
2784	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2784	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5036	2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_elex_wannacry.exe
2404	vonpehor.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 4956	5036	2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_elex_wannacry.exe	80
PID 4956 wrote to memory of 3968	4956	cmd.exe	82
PID 4956 wrote to memory of 2404	4956	cmd.exe	83
PID 2404 wrote to memory of 2784	2404	vonpehor.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vonpehor.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4956
- - 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:3968
- - C:\Users\Admin\AppData\Local\Temp\vonpehor.exe
    C:\Users\Admin\AppData\Local\Temp\\vonpehor.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-23_7c88a9dba6bf1647d390ba6738c5d4f5_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2404
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\qpcoes\dabos.dll",method C:\Users\Admin\AppData\Local\Temp\vonpehor.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:2784

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

vonpehor.exe

Path C:\Users\Admin\AppData\Local\Temp\vonpehor.exe
Size 363KB
SHA256 c7f836d877becad9eee7ddbbd180de8485b7ad4a14f1f267bf29b3eef4b4c920
MD5 412058ab8b0b98a3cdb14020b33dcbfe
SHA1 912379fddc92f5f3a97bebe9dbd9c6c7cbb3b4a4
SHA512 579cfc082bfd08de9d423d6895a47e3eb541e910a65f9ab81ca71cdcb7e4b2c6e289a413aec37786003d11f91036f906cce216c13556d04a1f2568786e40ba7d
SSDEEP 6144:XO1ehJTKCz6udyYsf8Be8k/7g/Qnqj2aZQLdkm51bfWY627bCK64Nrr7:GeHTp+o7Ve57g/VDZ6km51bfWYhC+
TLSH
T1A884DF6275D7C8A2C6C67532CDA6E6B0E3E9CF58C871A97B07BC3ACC3E355009306265
MD5 SHA1 SHA512 SSDEEP TLSH

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dabos.dll

Path \??\c:\Program Files\qpcoes\dabos.dll
Size 236KB
SHA256 0243ceebb352c53fa37d5a4501e0e9349c435beaaa5c7003504e0e3bbdf0b669
MD5 29e546b2561a5921fb07c69ae1d61925
SHA1 e88e04ae04dcf341caef85154c40af59dc1981f2
SHA512 8d5ac71edbfcfa4a72afcae82ec65b4b75d728e55cee522828e3ac6014e07df44377f48f047cf7745449c0ac9d08acb50a357d17de6246307a3d73dd6431402f
SSDEEP 6144:5AR605YiF3+ZSip01kUQ0dUxYPDTYlMYjHWUCH:52m83Fm01kbqPDU3j2UCH
TLSH
T1FD3412511EFC0CFAF4A29BB91C51944DB3304C113BAC5E9E998DAF0DA997848723E727
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2784-10-0x0000000010000000-0x0000000010086000-memory.dmp

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memory/2784-9-0x0000000010000000-0x0000000010086000-memory.dmp

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memory/2784-12-0x0000000010000000-0x0000000010086000-memory.dmp

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memory/5036-0-0x0000000000400000-0x000000000045A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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