farfli | d730a7e8fc45771727cff69889f5b54b25f309005ca0f53a15030632cc0354e1

Analysis

max time kernel
148s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
17/07/2026, 07:48

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General

Target
2026-07-17_883104c70a36a0df45942ed17024a2fa_elex_wannacry.exe
Size 94KB
Sample260717-jm6cxsas21
SHA256 d730a7e8fc45771727cff69889f5b54b25f309005ca0f53a15030632cc0354e1
MD5 883104c70a36a0df45942ed17024a2fa
SHA1 64b58d383a3a7f748caea94866f160fa53456d9c
SHA512 fe532b614aee3350e63dc0171283af7f5d556690612b129ec8b8b04087db2378de3536419289807f6bb5fca2600916ba747bece5d7537422d814988d3e49919b
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6O:uLRrO10TiJD9yjqrilyxOuPp6O
TLSH
T1F193CF1DAD93896ED0018B3147579715E6B2AC19F9714F334350FA1DAF3290BEEDA288
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/1612-11-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/1612-13-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/1612-14-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/1612-11-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1612-13-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1612-14-0x0000000010000000-0x0000000010023000-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	1612	rundll32.exe
3	1612	rundll32.exe
4	1612	rundll32.exe
6	1612	rundll32.exe
7	1612	rundll32.exe
9	1612	rundll32.exe
10	1612	rundll32.exe
11	1612	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4348	xtxoh.exe

Executes dropped EXE 1 IoCs

pid	Process
4348	xtxoh.exe

Loads dropped DLL 1 IoCs

pid	Process
1612	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-1-5-21-189034102-168398478-1159367937-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\xdgypzp\\ggyss.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)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	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	2026-07-17_883104c70a36a0df45942ed17024a2fa_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	xtxoh.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
3176	cmd.exe
4892	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
4892	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe
1612	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1612	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4172	2026-07-17_883104c70a36a0df45942ed17024a2fa_elex_wannacry.exe
4348	xtxoh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4172 wrote to memory of 3176	4172	2026-07-17_883104c70a36a0df45942ed17024a2fa_elex_wannacry.exe	89
PID 3176 wrote to memory of 4892	3176	cmd.exe	91
PID 3176 wrote to memory of 4348	3176	cmd.exe	92
PID 4348 wrote to memory of 1612	4348	xtxoh.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-07-17_883104c70a36a0df45942ed17024a2fa_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-17_883104c70a36a0df45942ed17024a2fa_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4172
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xtxoh.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-17_883104c70a36a0df45942ed17024a2fa_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3176
- - 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:4892
- - C:\Users\Admin\AppData\Local\Temp\xtxoh.exe
    C:\Users\Admin\AppData\Local\Temp\\xtxoh.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-17_883104c70a36a0df45942ed17024a2fa_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4348
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\xdgypzp\ggyss.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\xtxoh.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:1612

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

xtxoh.exe

Path C:\Users\Admin\AppData\Local\Temp\xtxoh.exe
Size 95KB
SHA256 52f45b01cf984a4012cc174624b453d92de71b595983df3a2a7e40abb6d3584c
MD5 b70b29704c5d2983d6fbf56f757bdf71
SHA1 6ea1375943e7b5ee1e8c09a2ea8a5a6168400e52
SHA512 8cf9308e91de1498c08c6ce41ce093caf6fbe86ece2e33bf5c601a259a1b877cb22b42e8782f4c51a4b8dd93cc0c5dc23d606a1df85392794d8ebace855dabf1
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6+:uLRrO10TiJD9yjqrilyxOuPp6+
TLSH
T19093BF1DAD5389AEE0058B3147579715E6B2AC19F9314F334350FA1DAF3290BEEDA288
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ggyss.dll

Path \??\c:\xdgypzp\ggyss.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/1612-9-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/1612-10-0x0000000002D50000-0x0000000002D52000-memory.dmp

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memory/1612-11-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/1612-13-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/1612-14-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/4172-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4172-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4348-6-0x0000000000400000-0x0000000000417000-memory.dmp

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