farfli | 9b615a730e3dcfd1698acce24ca07063c51747ca2fd61a436b918f6559e8878d

Analysis

max time kernel
150s
max time network
146s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
15/04/2026, 10:19

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General

Target
2026-04-15_4dd8031eda804ff8483acb517b231261_elex_wannacry.exe
Size 102KB
Sample260415-mcx6caew8w
SHA256 9b615a730e3dcfd1698acce24ca07063c51747ca2fd61a436b918f6559e8878d
MD5 4dd8031eda804ff8483acb517b231261
SHA1 fac2cec6a1721f261d94dcad6b50924fa35ab9e0
SHA512 3bdb1ed95cba747c7c5969673380a2db2cf388ad770ebe3bc767e6c3b6e5107fb1979f72833496ca362eb8e35b9c61a7a75767d849d5a5745b757937d8c973e9
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmy:ELRrO10TiJD9yjqrilyxOWP
TLSH
T1FDA3BE1C7D52C89FE0058B7047579625A6A2AC19FA304F334380BA5EFF36D1BEDE9198
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 2 IoCs

resource	yara_rule
behavioral2/memory/2004-12-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/2004-18-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2004-12-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2004-18-0x0000000010000000-0x0000000010023000-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	2004	rundll32.exe
3	2004	rundll32.exe
4	2004	rundll32.exe
5	2004	rundll32.exe
6	2004	rundll32.exe
8	2004	rundll32.exe
10	2004	rundll32.exe
12	2004	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2156	jlked.exe

Executes dropped EXE 1 IoCs

pid	Process
2156	jlked.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	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-1-5-21-1456842261-3464001825-2855069093-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\mhhcg\\dikaj.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)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\u:	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	2026-04-15_4dd8031eda804ff8483acb517b231261_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	jlked.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
5428	cmd.exe
5400	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
5400	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2004	rundll32.exe
2004	rundll32.exe
2004	rundll32.exe
2004	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5332	2026-04-15_4dd8031eda804ff8483acb517b231261_elex_wannacry.exe
2156	jlked.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5332 wrote to memory of 5428	5332	2026-04-15_4dd8031eda804ff8483acb517b231261_elex_wannacry.exe	79
PID 5428 wrote to memory of 5400	5428	cmd.exe	81
PID 5428 wrote to memory of 2156	5428	cmd.exe	82
PID 2156 wrote to memory of 2004	2156	jlked.exe	83

C:\Users\Admin\AppData\Local\Temp\2026-04-15_4dd8031eda804ff8483acb517b231261_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-15_4dd8031eda804ff8483acb517b231261_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5332
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\jlked.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_4dd8031eda804ff8483acb517b231261_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5428
- - 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:5400
- - C:\Users\Admin\AppData\Local\Temp\jlked.exe
    C:\Users\Admin\AppData\Local\Temp\\jlked.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_4dd8031eda804ff8483acb517b231261_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2156
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\mhhcg\dikaj.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\jlked.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:2004

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

jlked.exe

Path C:\Users\Admin\AppData\Local\Temp\jlked.exe
Size 102KB
SHA256 c2177c87ff720715b957555e1503946d696d424029443278f3c6f9a344055b71
MD5 e51d6b2ae9c38852e6dad3ca09ce0186
SHA1 7cae4357e9e1dc10f3dc25607f78aa3e6e7b295a
SHA512 5bf46b01dbfbca381f55a6012cc5c191f624a3eab57d1eba98d2371f5bad6e9e844bd470b2529e9b4f31c2421c93c15a4292922763ec179e6d2506fa278b19c0
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcIWlmy9:ELRrO10TiJD9yjqrilyxOWP9
TLSH
T18FA3AD1C7D52C99FE0058B7047479625A6A2AC19FA304F334380BA5EFF36D1BEDE9198
MD5 SHA1 SHA512 SSDEEP TLSH

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dikaj.dll

Path \??\c:\mhhcg\dikaj.dll
Size 44KB
SHA256 9111c1eb1f0b59dcd49cfd5a0abc0ba100ac59a3bcae8623ff091dfdc46fed3c
MD5 0f12a7d509b2c9bb9b4cd6d8a0325e86
SHA1 f5fb59ad4f0633d115b06f35a2dc161dc4367157
SHA512 e3c84a643ff0a2627daba8a056221985a472aaf07bade61b3e9459db4bfc8792c1347606911e3fcc01581508004b18b5435bcccd5e7617cc6d091f37a5f42e7f
SSDEEP 768:DICzePjle2367kjhrXLdCuYMW8QVnwrLDGe/brbtJyOTuXfADVjeJ2i/MVJWAE:DDePjA23Ukjh37YMonwrvGybrbbRCf4E
TLSH
T1FD23F1A7B94E8D4FC0AE41F7078FC8D422B5589A97A7CB4626008F216CC4FB07E52376
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2004-10-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2004-11-0x0000000000DD0000-0x0000000000DD2000-memory.dmp

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memory/2004-13-0x0000000000DE0000-0x0000000000DE6000-memory.dmp

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memory/2004-12-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2004-14-0x0000000000DD0000-0x0000000000DD2000-memory.dmp

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memory/2004-18-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2156-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5332-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5332-2-0x0000000000400000-0x0000000000417000-memory.dmp

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