farfli | dc2f17cfac303d8ef132b412fb92076717d70d6eacfe8c60202b748927768712

Analysis

max time kernel
150s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/08/2026, 09:46

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General

Target
2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_elex_wannacry.exe
Size 87KB
Sample260810-lrwemawcmc
SHA256 dc2f17cfac303d8ef132b412fb92076717d70d6eacfe8c60202b748927768712
MD5 ae776c06d7a5297871d4b9f54b256e5f
SHA1 63e2d42d0ea832a8a149349e5dadda9ab74f3f65
SHA512 dda02ba0c3241e30279e7d021c939eb1e8ce69abe91598cce35f272afc7fc662c33d18acc883c30961648409d4ae9f543314593c67257126291e3fabe0d0c6af
SSDEEP 1536:m/14ZaKO/myxZmAijMcCwVVydoM1bKAQAH9M53e+iWtnSdG:a14ZaKOTZSMcJVgDKxAH9MhtfSdG
TLSH
T1DB93BF232BBB4175DD44AFB11F6B6665E6F2BC36212082728B5C9D8DAA3CF45DB0131C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution 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/4864-11-0x0000000010000000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/4864-14-0x0000000010000000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/4864-15-0x0000000010000000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/4864-11-0x0000000010000000-0x0000000010021000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4864-14-0x0000000010000000-0x0000000010021000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4864-15-0x0000000010000000-0x0000000010021000-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
3	4864	rundll32.exe
4	4864	rundll32.exe
5	4864	rundll32.exe
10	4864	rundll32.exe
11	4864	rundll32.exe
15	4864	rundll32.exe
16	4864	rundll32.exe
18	4864	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3308	mibdl.exe

Executes dropped EXE 1 IoCs

pid	Process
3308	mibdl.exe

Loads dropped DLL 1 IoCs

pid	Process
4864	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-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\hvarc\\jfztrp.dll\",GetWindowClass"	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)	\??\n:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
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)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	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)	\??\p:	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	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

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
4396	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	2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_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	mibdl.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
4396	cmd.exe
2544	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
2544	PING.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe
4864	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4864	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5168	2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_elex_wannacry.exe
3308	mibdl.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5168 wrote to memory of 4396	5168	2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_elex_wannacry.exe	91
PID 4396 wrote to memory of 2544	4396	cmd.exe	93
PID 4396 wrote to memory of 3308	4396	cmd.exe	94
PID 3308 wrote to memory of 4864	3308	mibdl.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5168
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\mibdl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_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:4396
- - 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:2544
- - \??\c:\mibdl.exe
    c:\mibdl.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-10_ae776c06d7a5297871d4b9f54b256e5f_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3308
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\hvarc\jfztrp.dll",GetWindowClass c:\mibdl.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:4864

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

jfztrp.dll

Path \??\c:\hvarc\jfztrp.dll
Size 43KB
SHA256 0b747c32730f2ad29b44299054bc22f8075702b081e91edaaead528abca227d2
MD5 0164aeb78f4d2181e817a9a6b0ad22f1
SHA1 c56c6a743e48e8652707a34e4cddc1f645f140ea
SHA512 e69ad90790d8062a903954f7ea85cacd241113afaf0eb16098f473835cffcda6e1f9fa9844a8618cc297fffa2e6ff7d458f9ebb2ce3febf7ffd683ffd6ad44f5
SSDEEP 768:2DdBa8mqIOiSUZrBGhvQLq6UYiaKRsRMwwY2BjkTrXW/VJZ581swUqHhiQREQoJs:kwqnPUb+v0q6UY+sRMwwY2Jkal+1ZUqJ
TLSH
T19613F133EACCDFDFF8A05271C576D0FCD337AC2849669A0395A0219D9D60948B878F66
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

mibdl.exe

Path \??\c:\mibdl.exe
Size 87KB
SHA256 e65ffcfb0b234d3dcdae7a6fda7691b4c35a75e31a5d32e2983303455b85fc9e
MD5 2117231ddf11d4a176aeeda2e987f832
SHA1 8a77cdd2fddc61f0cb512be4715068ad56d59b8a
SHA512 712e46a5fbeb5ef21cc9b8af1cff1d5ada62308b61da530ea3496d6d90a9e6145770879b24366db3d3a6a8e73d7f168fd289b0aadd2774d9c658b0013cf1c610
SSDEEP 1536:m/14ZaKO/myxZmAijMcCwVVydoM1bKAQAH9M53e+iWtnSdW:a14ZaKOTZSMcJVgDKxAH9MhtfSdW
TLSH
T1FA93BF232BBB4175ED44AFB11F6B5665E6F2BC36212082728B5C9A8DE93CF05DB0531C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3308-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4864-9-0x0000000010000000-0x0000000010021000-memory.dmp

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memory/4864-10-0x0000000002850000-0x0000000002852000-memory.dmp

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memory/4864-12-0x0000000002850000-0x0000000002852000-memory.dmp

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memory/4864-11-0x0000000010000000-0x0000000010021000-memory.dmp

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memory/4864-14-0x0000000010000000-0x0000000010021000-memory.dmp

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memory/4864-15-0x0000000010000000-0x0000000010021000-memory.dmp

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memory/5168-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5168-2-0x0000000000400000-0x0000000000417000-memory.dmp

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