farfli | 01319d5fbbc62a5250e3f65a3a9c1159a30ea72d5f6bb7b868c400ad72e89e98

Analysis

max time kernel
148s
max time network
150s
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, 10:05

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General

Target
2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_elex_wannacry.exe
Size 153KB
Sample260808-l4rl7sysh1
SHA256 01319d5fbbc62a5250e3f65a3a9c1159a30ea72d5f6bb7b868c400ad72e89e98
MD5 2e6cb7573bdddecc6bf453da30d7e34d
SHA1 23bfa6ff2a32c8edd88091c405e2806af21b9ff1
SHA512 b0ab0779097eac769ad2e30570fefb27451e81acc431b7d3b27b12dca82d2b413e7a7f2af1e13b3a32c214ee5a2ea73ac0b0b71ae7a7421cef49fdb041d61121
SSDEEP 3072:mK4RNx65b4RoIwZpx10ZENfrGSQ7sDU/ySkNAq:ml65xiZuKoDkySkNA
TLSH
T128F3D0CE1F7ACFDBE1202C75D1A416F742529C99EB2457978385FD8EB832C81AC36126
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
behavioral2/memory/4728-10-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral2/memory/4728-12-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4728-10-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4728-12-0x0000000010000000-0x000000001002E000-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
7	4728	rundll32.exe
8	4728	rundll32.exe
9	4728	rundll32.exe
11	4728	rundll32.exe
12	4728	rundll32.exe
14	4728	rundll32.exe
15	4728	rundll32.exe
17	4728	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1184	xabzss.exe

Executes dropped EXE 1 IoCs

pid	Process
1184	xabzss.exe

Loads dropped DLL 1 IoCs

pid	Process
4728	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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\snliy\\phsss.dll\",init"	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	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)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	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

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
4836	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xabzss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_elex_wannacry.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
2676	PING.EXE
4836	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
2676	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4728	rundll32.exe
4728	rundll32.exe
4728	rundll32.exe
4728	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4728	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2560	2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_elex_wannacry.exe
1184	xabzss.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2560 wrote to memory of 4836	2560	2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_elex_wannacry.exe	89
PID 4836 wrote to memory of 2676	4836	cmd.exe	91
PID 4836 wrote to memory of 1184	4836	cmd.exe	92
PID 1184 wrote to memory of 4728	1184	xabzss.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2560
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\xabzss.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_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:4836
- - 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:2676
- - \??\c:\xabzss.exe
    c:\xabzss.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_2e6cb7573bdddecc6bf453da30d7e34d_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1184
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\snliy\phsss.dll",init c:\xabzss.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:4728

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

phsss.dll

Path \??\c:\snliy\phsss.dll
Size 42KB
SHA256 c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7
MD5 36e3fb5964d663272cf1169e1e1ca478
SHA1 58115e08b49505bcbbb5c88a28a86222ba18d5d4
SHA512 daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442
SSDEEP 768:t0inj1jJ5OeUMhBNSqHvMjjAipMkuG30sv2xEZkWldADAKPIp:t0ipV5uMhBt0jjAiusv22ZkWTOAKP8
TLSH
T1D813E19B6BEC7029FDD22BB4F4F66815EEB63F388CB2C70E114941AB1C3A9D51251706
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

xabzss.exe

Path \??\c:\xabzss.exe
Size 154KB
SHA256 40502eb32ed40d914a8834c4576a3a131ae2787aae0524645e473708fa6bc7be
MD5 dbecac3ee32afdc5705be5b140f3b86a
SHA1 a94bdf7dbe9f203a4475d2189c24191e68dd63d8
SHA512 7c0bbb4c8bda44480481e0ffb36ae0f0838f590f3f43436b6f6fd946794f62efcf3ca87a75cdb94dd2ef976747dee50c2af0a31cb3e966a29ecda382597eb2ac
SSDEEP 3072:mK4RNx65b4RoIwZpx10ZENfrGSQ7sDU/ySkNAqs:ml65xiZuKoDkySkNA9
TLSH
T101F3D0CE1F7ACFDBE1202C75D1A416F782529C98EB1457978385FD8EB832D81AC36126
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1184-6-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/2560-0-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/2560-2-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/4728-9-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4728-11-0x0000000002D40000-0x0000000002E40000-memory.dmp

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memory/4728-10-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4728-12-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4728-13-0x0000000002D40000-0x0000000002E40000-memory.dmp

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