farfli | 4857bbb87f39a688d65ba7e7449bd5336aa89e3c3dd6c870a0cadbe6fca67510

Analysis

max time kernel
148s
max time network
138s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
20/08/2026, 06:02

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General

Target
2026-08-20_39e5b3316374b17e8a924c4118130043_coinminer_elex_wannacry.exe
Size 293KB
Sample260820-grslhs1amb
SHA256 4857bbb87f39a688d65ba7e7449bd5336aa89e3c3dd6c870a0cadbe6fca67510
MD5 39e5b3316374b17e8a924c4118130043
SHA1 7be851ffef0481719848144c3c0c3001b7f62345
SHA512 e470cbb733281681e31a6116eeab25b3910fbcbb5fc8ed837c201a68f72228209b8aed7a97a441bd341059f02c6cfe9499d44c642408936f688ebcc0c5740756
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycD:qtatPE5Txvev1zQBgexOdw6rpI9Fs29
TLSH
T1D5547C1233E44869E4EA3A32CE76A630D7FAE9759C33D67F03D4430E5A36A04CB55366
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer upx

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/3680-11-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/3680-13-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/3680-16-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/3680-11-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3680-13-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3680-16-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/1524-0-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/memory/1524-2-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x000b000000011377-3.dat	UPX
behavioral2/memory/4512-7-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x000e00000001c583-8.dat	UPX
behavioral2/memory/3680-10-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/3680-11-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/3680-13-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/3680-16-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4512	rutsut.exe

Executes dropped EXE 2 IoCs

pid	Process
4512	rutsut.exe
3680	qtp.exe

Loads dropped DLL 1 IoCs

pid	Process
3680	qtp.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-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\yqhyd\\qtp.exe \"c:\\Program Files\\yqhyd\\qtpyv.dll\",Group"	qtp.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)	\??\q:	qtp.exe
File opened (read-only)	\??\u:	qtp.exe
File opened (read-only)	\??\v:	qtp.exe
File opened (read-only)	\??\d:	qtp.exe
File opened (read-only)	\??\i:	qtp.exe
File opened (read-only)	\??\j:	qtp.exe
File opened (read-only)	\??\l:	qtp.exe
File opened (read-only)	\??\o:	qtp.exe
File opened (read-only)	\??\r:	qtp.exe
File opened (read-only)	\??\t:	qtp.exe
File opened (read-only)	\??\a:	qtp.exe
File opened (read-only)	\??\b:	qtp.exe
File opened (read-only)	\??\h:	qtp.exe
File opened (read-only)	\??\m:	qtp.exe
File opened (read-only)	\??\s:	qtp.exe
File opened (read-only)	\??\g:	qtp.exe
File opened (read-only)	\??\w:	qtp.exe
File opened (read-only)	\??\x:	qtp.exe
File opened (read-only)	\??\y:	qtp.exe
File opened (read-only)	\??\z:	qtp.exe
File opened (read-only)	\??\k:	qtp.exe
File opened (read-only)	\??\n:	qtp.exe
File opened (read-only)	\??\p:	qtp.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	qtp.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000e00000001c583-8.dat	upx
behavioral2/memory/3680-10-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/3680-11-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/3680-13-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/3680-16-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\yqhyd	rutsut.exe
File created	\??\c:\Program Files\yqhyd\qtpyv.dll	rutsut.exe
File created	\??\c:\Program Files\yqhyd\qtp.exe	rutsut.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
3356	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	2026-08-20_39e5b3316374b17e8a924c4118130043_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	rutsut.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qtp.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
3356	cmd.exe
2964	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	qtp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	qtp.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2964	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3680	qtp.exe
3680	qtp.exe
3680	qtp.exe
3680	qtp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3680	qtp.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1524	2026-08-20_39e5b3316374b17e8a924c4118130043_coinminer_elex_wannacry.exe
4512	rutsut.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 3356	1524	2026-08-20_39e5b3316374b17e8a924c4118130043_coinminer_elex_wannacry.exe	89
PID 3356 wrote to memory of 2964	3356	cmd.exe	91
PID 3356 wrote to memory of 4512	3356	cmd.exe	92
PID 4512 wrote to memory of 3680	4512	rutsut.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-20_39e5b3316374b17e8a924c4118130043_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-20_39e5b3316374b17e8a924c4118130043_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rutsut.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-20_39e5b3316374b17e8a924c4118130043_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:3356
- - 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:2964
- - C:\Users\Admin\AppData\Local\Temp\rutsut.exe
    C:\Users\Admin\AppData\Local\Temp\\rutsut.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-20_39e5b3316374b17e8a924c4118130043_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:4512
  - - \??\c:\Program Files\yqhyd\qtp.exe
      "c:\Program Files\yqhyd\qtp.exe" "c:\Program Files\yqhyd\qtpyv.dll",Group C:\Users\Admin\AppData\Local\Temp\rutsut.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:3680

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

qtp.exe

Path C:\Program Files\yqhyd\qtp.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

rutsut.exe

Path C:\Users\Admin\AppData\Local\Temp\rutsut.exe
Size 293KB
SHA256 bbd258273ff81911516a33c67f198491ff7ed8839acb0dc677193bdddfd936f1
MD5 99c623981089d1a779e7d49e52f765cb
SHA1 9add830340637636d8c70d64d21ddda9df575524
SHA512 8f43ff4aa55c66ff97310e30d09924bb63b026e18498fa899850efdc10ed91363caaf823a3d813b8ea3b7d30d9107f4bea1463fcbeee1905fb58ac3f990977d6
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycC:qtatPE5Txvev1zQBgexOdw6rpI9Fs29W
TLSH
T122547C1233E44869E4EA3A32CE76A630D7FAE9759C33D67F03D4430E5A36A04CB55366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

qtpyv.dll

Path \??\c:\Program Files\yqhyd\qtpyv.dll
Size 97KB
SHA256 c7efed814b5162cb30aeff1130c495e9c216f2bd19a5ff1fc88c355f2cb1abbe
MD5 771fdd0b3628dd4c4e4b9938c4abc0b9
SHA1 49c8179e05053ea6d3523fef9953a06e521a410f
SHA512 c1bb639eafbb4cd78d7fa07a1d0d27864ca19097efe16f68c1ba4b8d4893bf384af90964f93193835c5b6bd2c9081031f74dd00bce33fdd8e082af365f18e5a8
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbG0:5pG6Sg9txRk/SS6bG0
TLSH
T14BA301F6290D7DD6CB354839D6528E35F629EE348C589F887ECE6C13ACB8510E1641B1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1524-0-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/1524-2-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/3680-10-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/3680-11-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/3680-13-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/3680-16-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4512-7-0x0000000000400000-0x000000000043F000-memory.dmp

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