farfli | b1e4054a6816b917479b9c041828d8238766623bb1be73231fd6e16e6cc8f382

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
05/08/2026, 18:58

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General

Target
2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_elex_wannacry.exe
Size 582KB
Sample260805-xmmsgade57
SHA256 b1e4054a6816b917479b9c041828d8238766623bb1be73231fd6e16e6cc8f382
MD5 2d3d52d4a9563e6be097a32e2f7f2b9f
SHA1 bef1410521506facbd0081cb4083d1a6a00b55ff
SHA512 8929546bf195bd0041eccf87d92d09fd570ce8d3643da70ddf85421d8f8d76e9cb54eb676ae8bdd519d0f1ef4a63070918efd449553644227852ce73068686d2
SSDEEP 6144:WAMejnmtYZnAmGJ/8uADNFlbF/joovD6fkjOmfPWq6da0npNu:HMimtuAmGJ/85BbFb976s3Wq6d7npU
TLSH
T1E1C41242F592887BC43CDB34D75B8B35E3E259707A065262838DAC9EADB9F0787053D8
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 2 IoCs

resource	yara_rule
behavioral1/memory/3484-11-0x0000000010000000-0x0000000010090000-memory.dmp	family_farfli
behavioral1/memory/3484-13-0x0000000010000000-0x0000000010090000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/3484-11-0x0000000010000000-0x0000000010090000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3484-13-0x0000000010000000-0x0000000010090000-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	3484	rundll32.exe
10	3484	rundll32.exe
13	3484	rundll32.exe
14	3484	rundll32.exe
30	3484	rundll32.exe
35	3484	rundll32.exe
48	3484	rundll32.exe
69	3484	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4968	ialkq.exe

Executes dropped EXE 1 IoCs

pid	Process
4968	ialkq.exe

Loads dropped DLL 1 IoCs

pid	Process
3484	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-1-5-21-1074038928-2032447174-945360078-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Meture = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\buhatojju\\swpuyohu.dll\",Decompress"	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)	\??\u:	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)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3484	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\buhatojju	ialkq.exe
File created	\??\c:\Program Files\buhatojju\swpuyohu.dll	ialkq.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
4524	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	ialkq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_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
4524	cmd.exe
3976	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
3976	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe
3484	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3484	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3004	2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_elex_wannacry.exe
4968	ialkq.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 4524	3004	2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_elex_wannacry.exe	85
PID 4524 wrote to memory of 3976	4524	cmd.exe	87
PID 4524 wrote to memory of 4968	4524	cmd.exe	88
PID 4968 wrote to memory of 3484	4968	ialkq.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ialkq.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_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:4524
- - 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:3976
- - C:\Users\Admin\AppData\Local\Temp\ialkq.exe
    C:\Users\Admin\AppData\Local\Temp\\ialkq.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-05_2d3d52d4a9563e6be097a32e2f7f2b9f_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:4968
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\buhatojju\swpuyohu.dll",Decompress C:\Users\Admin\AppData\Local\Temp\ialkq.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)
      Suspicious use of NtSetInformationThreadHideFromDebugger
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3484

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

ialkq.exe

Path C:\Users\Admin\AppData\Local\Temp\ialkq.exe
Size 582KB
SHA256 f1283f0bf4f3eb5702367a9df53f14b73d97c1903507cb6a23ceb83e92a4b028
MD5 4ae41058f64c823dcbd0947c38cf32ba
SHA1 00198ae15383b77e75b11d7eec167fed47cd2019
SHA512 69e97634dc7af3bf94e1dbdf575413c93cbcc651d9a141c7d1ffcfface0339a52d95cf4d91e7c9ac0aa88e4062272a087469f0bd509704a7d33df96f5aa2eed5
SSDEEP 6144:WAMejnmtYZnAmGJ/8uADNFlbF/joovD6fkjOmfPWq6da0npNu7:HMimtuAmGJ/85BbFb976s3Wq6d7npU7
TLSH
T1B2C41242F592887AC43CDB34D75B8B35A3E259707A065262838CAC9FADB9F0787053D8
MD5 SHA1 SHA512 SSDEEP TLSH

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swpuyohu.dll

Path \??\c:\Program Files\buhatojju\swpuyohu.dll
Size 266KB
SHA256 241c2209a4e522d5b051da24f97c16349af2651ef250f5ff534eae2713c116b1
MD5 aedfbc0cb3aa4ca70ddae9642fe34f60
SHA1 e4450c92f640eacc9771e858fc74b4aeb71c3a7e
SHA512 ddee5905365c6323281c6775305a9a81674db5cc1daf00dd8ef36b5fea456993cbf4906e4845ec592b08b117ac8f63cf52f05d4d6922a3cdf1901908a98bb9d0
SSDEEP 6144:/hJkmMlGAzciA4nhT5ai7Ohk/0BFen/xmL:/hJEQloHOXM4L
TLSH
T1464423911B3E34B3FC5F2B327A77E56FFB7462342862899FC78F422165A36501019792
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3004-0-0x0000000000400000-0x0000000000494000-memory.dmp

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memory/3004-2-0x0000000000400000-0x0000000000494000-memory.dmp

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memory/3484-10-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/3484-11-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/3484-13-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/4968-7-0x0000000000400000-0x0000000000494000-memory.dmp

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