farfli | c8e1afc85f0cf155124e98019870923ace5a8363451a3c44d213aaefdb444f66

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
16/08/2026, 04:34

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General

Target
2026-08-16_5573e123bd450101ae0520cd33b2e787_coinminer_elex_wannacry.exe
Size 402KB
Sample260816-e6931adj7s
SHA256 c8e1afc85f0cf155124e98019870923ace5a8363451a3c44d213aaefdb444f66
MD5 5573e123bd450101ae0520cd33b2e787
SHA1 bd0b3db80e8594451e3a891fa11d9044d4e2ddad
SHA512 e8d5011055293afe93dc98c48f78d64f97a60d007fb98f94398f2b7b45b3b4f42150524daa76e770520449f30d229b7ab66ad611fed70ea94d71a9c07a6d3f60
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH+:zdE3sJd1fm/+yb3OYs84/JH6+
TLSH
T11394AF01E68741D6DE8225B081FA7377B378DA4D0F12C7E3BB68EE2E6E211D1953B119
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 4 IoCs

resource	yara_rule
behavioral1/memory/572-14-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/572-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/572-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/572-20-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral1/memory/572-14-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/572-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/572-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/572-20-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/3052-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/3052-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x0006000000023216-4.dat	UPX
behavioral1/memory/1796-11-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x000a000000024559-10.dat	UPX
behavioral1/memory/572-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/572-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/572-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/572-20-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
1796	cccaglvh.exe

Executes dropped EXE 2 IoCs

pid	Process
1796	cccaglvh.exe
572	zcgtknao.exe

Loads dropped DLL 1 IoCs

pid	Process
572	zcgtknao.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-1-5-21-2937465464-4167303362-2236413517-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\hxstm\\zcgtknao.exe \"c:\\Program Files\\hxstm\\zcgtknao.dll\",Viewer"	zcgtknao.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)	\??\k:	zcgtknao.exe
File opened (read-only)	\??\m:	zcgtknao.exe
File opened (read-only)	\??\r:	zcgtknao.exe
File opened (read-only)	\??\e:	zcgtknao.exe
File opened (read-only)	\??\n:	zcgtknao.exe
File opened (read-only)	\??\q:	zcgtknao.exe
File opened (read-only)	\??\s:	zcgtknao.exe
File opened (read-only)	\??\t:	zcgtknao.exe
File opened (read-only)	\??\v:	zcgtknao.exe
File opened (read-only)	\??\w:	zcgtknao.exe
File opened (read-only)	\??\x:	zcgtknao.exe
File opened (read-only)	\??\j:	zcgtknao.exe
File opened (read-only)	\??\l:	zcgtknao.exe
File opened (read-only)	\??\u:	zcgtknao.exe
File opened (read-only)	\??\i:	zcgtknao.exe
File opened (read-only)	\??\o:	zcgtknao.exe
File opened (read-only)	\??\y:	zcgtknao.exe
File opened (read-only)	\??\z:	zcgtknao.exe
File opened (read-only)	\??\p:	zcgtknao.exe
File opened (read-only)	\??\a:	zcgtknao.exe
File opened (read-only)	\??\b:	zcgtknao.exe
File opened (read-only)	\??\g:	zcgtknao.exe
File opened (read-only)	\??\h:	zcgtknao.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	zcgtknao.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\hxstm	cccaglvh.exe
File created	\??\c:\Program Files\hxstm\zcgtknao.dll	cccaglvh.exe
File created	\??\c:\Program Files\hxstm\zcgtknao.exe	cccaglvh.exe
File opened for modification	\??\c:\Program Files\hxstm\zcgtknao.exe	cccaglvh.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
4052	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	cccaglvh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zcgtknao.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-16_5573e123bd450101ae0520cd33b2e787_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

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
4052	cmd.exe
4544	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	zcgtknao.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	zcgtknao.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4544	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
572	zcgtknao.exe
572	zcgtknao.exe
572	zcgtknao.exe
572	zcgtknao.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	572	zcgtknao.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3052	2026-08-16_5573e123bd450101ae0520cd33b2e787_coinminer_elex_wannacry.exe
1796	cccaglvh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 4052	3052	2026-08-16_5573e123bd450101ae0520cd33b2e787_coinminer_elex_wannacry.exe	85
PID 4052 wrote to memory of 4544	4052	cmd.exe	87
PID 4052 wrote to memory of 1796	4052	cmd.exe	88
PID 1796 wrote to memory of 572	1796	cccaglvh.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-16_5573e123bd450101ae0520cd33b2e787_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-16_5573e123bd450101ae0520cd33b2e787_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\cccaglvh.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-16_5573e123bd450101ae0520cd33b2e787_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:4052
- - 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:4544
- - C:\Users\Admin\AppData\Local\Temp\cccaglvh.exe
    C:\Users\Admin\AppData\Local\Temp\\cccaglvh.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-16_5573e123bd450101ae0520cd33b2e787_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:1796
  - - \??\c:\Program Files\hxstm\zcgtknao.exe
      "c:\Program Files\hxstm\zcgtknao.exe" "c:\Program Files\hxstm\zcgtknao.dll",Viewer C:\Users\Admin\AppData\Local\Temp\cccaglvh.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:572

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

zcgtknao.exe

Path C:\Program Files\hxstm\zcgtknao.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

cccaglvh.exe

Path C:\Users\Admin\AppData\Local\Temp\cccaglvh.exe
Size 402KB
SHA256 8002f50de3511382b2d06ef7c903ce4014baf498856c9770e581a56f94d2b916
MD5 b81b5e0cbee2594cd8ebe137dc086450
SHA1 f447510971a70b7cb46005d8cb6413ee8ac1826c
SHA512 d6b0bc1def6024b229be300306bd7e55a1f3e41558ebade79dd3ac9afcb52ae1c06c2c12ad5481b57ab2ff9d12a7655b766584d8b5da32ceee479df23bf6939c
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumHj:zdE3sJd1fm/+yb3OYs84/JH6j
TLSH
T1DE94AF01E68741D6DE8225B081FA7377B378DA4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

zcgtknao.dll

Path \??\c:\Program Files\hxstm\zcgtknao.dll
Size 89KB
SHA256 efca1670e976931bd6006713d7ec52d9f751af6f7f615ac5e9c0f4f2fa4e3d91
MD5 a43467af98369e121568fcf296a991c6
SHA1 c78af6084f44b8dae1692c3d762762c35073d4bd
SHA512 07804178747d84162a1b6357b096abed400ae91f5a0c58448b7b49a0a368eb853c2f1da9b8c0b22c08a1f9b6f24534ee079e6aee5566852edcfc0e325b72b396
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGs:M1uF6Feu2NlQOBcGs
TLSH
T10C9302C41665CD8BCCD87072727FAA4EE631C4CCB941ACB34B5E13A31A36AE3D41AB05
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/572-14-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/572-15-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/572-17-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/572-20-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/1796-11-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3052-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3052-2-0x0000000000400000-0x0000000000471000-memory.dmp

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