farfli | 26b0e0a097f62ed98ba027252331389382c16dd1de14024647784ca72500dae7

Analysis

max time kernel
148s
max time network
139s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
08/09/2026, 01:02

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General

Target
2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_elex_wannacry.exe
Size 406KB
Sample260908-beamaaar2w
SHA256 26b0e0a097f62ed98ba027252331389382c16dd1de14024647784ca72500dae7
MD5 f66639a5900ee6fd1a9d26caa1058e0c
SHA1 0e06ef44ab485d294cfded52f26792d319be3a68
SHA512 2443e15d55b3b4ad70b16e66f1cc2a89a4f761ff33eb6887da90456fcdd143e3738abf9829e16836a2ec16f16f01866add082b96833c45260b2fa9c17b1f5751
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum4X:zdE3sJd1fm/+yb3OYs84/JHdX
TLSH
T12A94AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
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/2004-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2004-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2004-16-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/2004-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2004-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2004-16-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/4456-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/4456-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000e00000001b1d0-3.dat	UPX
behavioral2/memory/5644-7-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000e00000001c4bf-8.dat	UPX
behavioral2/memory/2004-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2004-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2004-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2004-16-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
5644	rfvebzknx.exe

Executes dropped EXE 2 IoCs

pid	Process
5644	rfvebzknx.exe
2004	tzcozic.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	tzcozic.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-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\hwkbv\\tzcozic.exe \"c:\\Program Files\\hwkbv\\tzcozic.dll\",Viewer"	tzcozic.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)	\??\m:	tzcozic.exe
File opened (read-only)	\??\n:	tzcozic.exe
File opened (read-only)	\??\o:	tzcozic.exe
File opened (read-only)	\??\u:	tzcozic.exe
File opened (read-only)	\??\w:	tzcozic.exe
File opened (read-only)	\??\x:	tzcozic.exe
File opened (read-only)	\??\a:	tzcozic.exe
File opened (read-only)	\??\d:	tzcozic.exe
File opened (read-only)	\??\g:	tzcozic.exe
File opened (read-only)	\??\j:	tzcozic.exe
File opened (read-only)	\??\p:	tzcozic.exe
File opened (read-only)	\??\r:	tzcozic.exe
File opened (read-only)	\??\t:	tzcozic.exe
File opened (read-only)	\??\y:	tzcozic.exe
File opened (read-only)	\??\s:	tzcozic.exe
File opened (read-only)	\??\q:	tzcozic.exe
File opened (read-only)	\??\b:	tzcozic.exe
File opened (read-only)	\??\h:	tzcozic.exe
File opened (read-only)	\??\k:	tzcozic.exe
File opened (read-only)	\??\v:	tzcozic.exe
File opened (read-only)	\??\z:	tzcozic.exe
File opened (read-only)	\??\i:	tzcozic.exe
File opened (read-only)	\??\l:	tzcozic.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	tzcozic.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\hwkbv	rfvebzknx.exe
File created	\??\c:\Program Files\hwkbv\tzcozic.dll	rfvebzknx.exe
File created	\??\c:\Program Files\hwkbv\tzcozic.exe	rfvebzknx.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
5996	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	2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_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	rfvebzknx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tzcozic.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
5996	cmd.exe
756	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	tzcozic.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	tzcozic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
756	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2004	tzcozic.exe
2004	tzcozic.exe
2004	tzcozic.exe
2004	tzcozic.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	tzcozic.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4456	2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_elex_wannacry.exe
5644	rfvebzknx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4456 wrote to memory of 5996	4456	2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_elex_wannacry.exe	89
PID 5996 wrote to memory of 756	5996	cmd.exe	91
PID 5996 wrote to memory of 5644	5996	cmd.exe	92
PID 5644 wrote to memory of 2004	5644	rfvebzknx.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rfvebzknx.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_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:5996
- - 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:756
- - C:\Users\Admin\AppData\Local\Temp\rfvebzknx.exe
    C:\Users\Admin\AppData\Local\Temp\\rfvebzknx.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-07_f66639a5900ee6fd1a9d26caa1058e0c_coinminer_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:5644
  - - \??\c:\Program Files\hwkbv\tzcozic.exe
      "c:\Program Files\hwkbv\tzcozic.exe" "c:\Program Files\hwkbv\tzcozic.dll",Viewer C:\Users\Admin\AppData\Local\Temp\rfvebzknx.exe
      4⤵
      Executes dropped EXE
      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:2004

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

Replay Monitor

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Downloads

tzcozic.exe

Path C:\Program Files\hwkbv\tzcozic.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

rfvebzknx.exe

Path C:\Users\Admin\AppData\Local\Temp\rfvebzknx.exe
Size 406KB
SHA256 84417a5025f91e0d012026609482c2c463946b7d8c4e861465d088277cd34eeb
MD5 9cd5c6271b135afe375b8cd1c3300424
SHA1 3fa31100c8718356c5dfb10c6fb4c955ecdce918
SHA512 3856e13d74a80514b76a33edda5ef8c77b1fc30e5481d11856eef7d5f9c7b2fd1dd1983f538365370cfdb0c1b73c64a0c3b372f5ae2db943d9575faa3d405ac2
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum40:zdE3sJd1fm/+yb3OYs84/JHd0
TLSH
T1A294AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tzcozic.dll

Path \??\c:\Program Files\hwkbv\tzcozic.dll
Size 89KB
SHA256 18e9301c6702f1bfc7658ee3c7c44d51c135e9773a2114d7de578e8f19b52cde
MD5 33da18baa0a532631490ee064eb9d767
SHA1 6fbdb3dd4ea79200fe1eade86d30353bfd07cb88
SHA512 59aee8a5efedb9b8cc98b84a2a368ec9dff956bbd505855046994dc4669187839d5d6634e4d2d1f53a3189a789629043f9042c42e7705dd381e3b8ec7c7e0462
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGQ:M1uF6Feu2NlQOBcGQ
TLSH
T1A89302C45665CD8BCCD87072327FAA4EE631C48CB941ACB34B5E13A31A36AF3D41AB05
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2004-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2004-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2004-13-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2004-16-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/4456-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/4456-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/5644-7-0x0000000000400000-0x0000000000471000-memory.dmp

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