farfli | 88d78bea61aced4735bb6ecc0f20be77a64dd0da5477dbc72a373c67fc874263

Analysis

max time kernel
148s
max time network
155s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
08/08/2026, 17:25

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General

Target
2026-08-08_acb683ef590aaf9b0663179a61dccd01_elex_wannacry.exe
Size 97KB
Sample260808-vzp29aef38
SHA256 88d78bea61aced4735bb6ecc0f20be77a64dd0da5477dbc72a373c67fc874263
MD5 acb683ef590aaf9b0663179a61dccd01
SHA1 e9fb5b71038910c3a220a73b5d52d94457047524
SHA512 129482a33ddb97341b4b7dd4a0a49777138d2a1d889a9f834d88fb760333854bb2f61729023bfa5e6127d987e3b0143351b6aeaf3d06843262d83aa9b8b6c428
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcE:ELRrO10TiJD9yjqrilyxO
TLSH
T120A3BF5D7C83885EE5048B704B539626B6726C59FA304F378340BA2DBB37847EED928D
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/6100-12-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/6100-14-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/6100-15-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/6100-12-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/6100-14-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/6100-15-0x0000000010000000-0x0000000010023000-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	6100	rundll32.exe
3	6100	rundll32.exe
4	6100	rundll32.exe
6	6100	rundll32.exe
7	6100	rundll32.exe
9	6100	rundll32.exe
11	6100	rundll32.exe
12	6100	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4440	rmina.exe

Executes dropped EXE 1 IoCs

pid	Process
4440	rmina.exe

Loads dropped DLL 1 IoCs

pid	Process
6100	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-1-5-21-3986082593-3624157295-3514260330-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ozjpfboz\\svwwl.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)	\??\d:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\z:	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
4100	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	2026-08-08_acb683ef590aaf9b0663179a61dccd01_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	rmina.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
2236	PING.EXE
4100	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
2236	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6100	rundll32.exe
6100	rundll32.exe
6100	rundll32.exe
6100	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6100	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1352	2026-08-08_acb683ef590aaf9b0663179a61dccd01_elex_wannacry.exe
4440	rmina.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 4100	1352	2026-08-08_acb683ef590aaf9b0663179a61dccd01_elex_wannacry.exe	89
PID 4100 wrote to memory of 2236	4100	cmd.exe	91
PID 4100 wrote to memory of 4440	4100	cmd.exe	92
PID 4440 wrote to memory of 6100	4440	rmina.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-08_acb683ef590aaf9b0663179a61dccd01_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_acb683ef590aaf9b0663179a61dccd01_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1352
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rmina.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_acb683ef590aaf9b0663179a61dccd01_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:4100
- - 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:2236
- - C:\Users\Admin\AppData\Local\Temp\rmina.exe
    C:\Users\Admin\AppData\Local\Temp\\rmina.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_acb683ef590aaf9b0663179a61dccd01_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4440
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ozjpfboz\svwwl.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\rmina.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:6100

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

rmina.exe

Path C:\Users\Admin\AppData\Local\Temp\rmina.exe
Size 97KB
SHA256 c893fa8adf54199cce90e1c78d6324565cb214a18c94fbda74ede1e03084c1bd
MD5 cbf86024c9d8950664a00bde00de2726
SHA1 2362872ab534b38134b9090a75fd572ee52ad73b
SHA512 8a0c54fdf9ae1375245b393b78949462968c18d6da0688eec58ebafbd4baf485061ab4be58c1c5e9d8f4ecb00645c6dc8b7bea4c4d406c18e41cb101933087de
SSDEEP 1536:agDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIcE7:ELRrO10TiJD9yjqrilyxOZ
TLSH
T1F8A3BF5C7C83885EE5048B7047539626B6726C59FA304F378340BA2DBB37847DED928D
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

svwwl.dll

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

Submit Download

memory/1352-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1352-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4440-5-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4440-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/6100-10-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/6100-11-0x00000000007F0000-0x00000000007F2000-memory.dmp

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memory/6100-12-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/6100-14-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/6100-15-0x0000000010000000-0x0000000010023000-memory.dmp

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