farfli | a588bdb85236c93bb34f5c34f856743664423ff74ab7da9169dd77cc1a5eb2c3

Analysis

max time kernel
150s
max time network
144s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/08/2026, 05:10

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General

Target
2026-08-03_3bd73aded5385399182fa53e6f21515a_coinminer_elex_wannacry.exe
Size 293KB
Sample260803-ftvcfsce25
SHA256 a588bdb85236c93bb34f5c34f856743664423ff74ab7da9169dd77cc1a5eb2c3
MD5 3bd73aded5385399182fa53e6f21515a
SHA1 870c97a51d82d598d69eb1383ed6b9116b2b4b00
SHA512 ddfa5d41f78d9df174feec7e5e42db697f90b5660dc4cfa2c2f653ddcac7cdd2f2fd243e304542176ad923e5809ddc22be7515d91e5987ad4ee7a03a4868b0a7
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycD:qtatPE5Txvev1zQBgexOdw6rpI9Fs29
TLSH
T14A547C1233E44869E4EA3A32CE76A630D7FAE9759C33D67F03D4430E5A36A04CB55366
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/4328-11-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/4328-13-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/4328-16-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/4328-11-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4328-13-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4328-16-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/4308-0-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/memory/4308-2-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x00120000000118f0-3.dat	UPX
behavioral2/memory/2576-7-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x000d00000001c596-8.dat	UPX
behavioral2/memory/4328-10-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4328-11-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4328-13-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4328-16-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
2576	gmbtz.exe

Executes dropped EXE 2 IoCs

pid	Process
2576	gmbtz.exe
4328	iemqyfl.exe

Loads dropped DLL 1 IoCs

pid	Process
4328	iemqyfl.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-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\mrjmtyke\\iemqyfl.exe \"c:\\Program Files\\mrjmtyke\\iemqyfl.dll\",Group"	iemqyfl.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)	\??\a:	iemqyfl.exe
File opened (read-only)	\??\g:	iemqyfl.exe
File opened (read-only)	\??\n:	iemqyfl.exe
File opened (read-only)	\??\q:	iemqyfl.exe
File opened (read-only)	\??\t:	iemqyfl.exe
File opened (read-only)	\??\w:	iemqyfl.exe
File opened (read-only)	\??\d:	iemqyfl.exe
File opened (read-only)	\??\h:	iemqyfl.exe
File opened (read-only)	\??\i:	iemqyfl.exe
File opened (read-only)	\??\k:	iemqyfl.exe
File opened (read-only)	\??\l:	iemqyfl.exe
File opened (read-only)	\??\o:	iemqyfl.exe
File opened (read-only)	\??\r:	iemqyfl.exe
File opened (read-only)	\??\s:	iemqyfl.exe
File opened (read-only)	\??\j:	iemqyfl.exe
File opened (read-only)	\??\p:	iemqyfl.exe
File opened (read-only)	\??\x:	iemqyfl.exe
File opened (read-only)	\??\y:	iemqyfl.exe
File opened (read-only)	\??\b:	iemqyfl.exe
File opened (read-only)	\??\m:	iemqyfl.exe
File opened (read-only)	\??\u:	iemqyfl.exe
File opened (read-only)	\??\v:	iemqyfl.exe
File opened (read-only)	\??\z:	iemqyfl.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	iemqyfl.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000d00000001c596-8.dat	upx
behavioral2/memory/4328-10-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4328-11-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4328-13-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4328-16-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\mrjmtyke	gmbtz.exe
File created	\??\c:\Program Files\mrjmtyke\iemqyfl.dll	gmbtz.exe
File created	\??\c:\Program Files\mrjmtyke\iemqyfl.exe	gmbtz.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
3732	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	gmbtz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iemqyfl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-03_3bd73aded5385399182fa53e6f21515a_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
3732	cmd.exe
7040	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	iemqyfl.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	iemqyfl.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
7040	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4328	iemqyfl.exe
4328	iemqyfl.exe
4328	iemqyfl.exe
4328	iemqyfl.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4328	iemqyfl.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4308	2026-08-03_3bd73aded5385399182fa53e6f21515a_coinminer_elex_wannacry.exe
2576	gmbtz.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 3732	4308	2026-08-03_3bd73aded5385399182fa53e6f21515a_coinminer_elex_wannacry.exe	90
PID 3732 wrote to memory of 7040	3732	cmd.exe	92
PID 3732 wrote to memory of 2576	3732	cmd.exe	93
PID 2576 wrote to memory of 4328	2576	gmbtz.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-08-03_3bd73aded5385399182fa53e6f21515a_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-03_3bd73aded5385399182fa53e6f21515a_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\gmbtz.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-03_3bd73aded5385399182fa53e6f21515a_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:3732
- - 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:7040
- - C:\Users\Admin\AppData\Local\Temp\gmbtz.exe
    C:\Users\Admin\AppData\Local\Temp\\gmbtz.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-03_3bd73aded5385399182fa53e6f21515a_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:2576
  - - \??\c:\Program Files\mrjmtyke\iemqyfl.exe
      "c:\Program Files\mrjmtyke\iemqyfl.exe" "c:\Program Files\mrjmtyke\iemqyfl.dll",Group C:\Users\Admin\AppData\Local\Temp\gmbtz.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:4328

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

iemqyfl.exe

Path C:\Program Files\mrjmtyke\iemqyfl.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

gmbtz.exe

Path C:\Users\Admin\AppData\Local\Temp\gmbtz.exe
Size 293KB
SHA256 625eaad3492dcbc6a82869af3d88d7707399125febf8367cd6a77e84db9cbbab
MD5 80c5031480388bca923709ead8a6d14a
SHA1 3c3e56d310c348161ad4a2a596123def12ef943a
SHA512 992b94f616cbd305400594c177750c3c94e3983d07c6205c71494b3401bc9b6d1fbdc3d9fbfcb93004946d720333b492565198f131f7a4102fe0f3424b32aad5
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycz:qtatPE5Txvev1zQBgexOdw6rpI9Fs293
TLSH
T17D547C1233E44869E4EA3A32CE76A630D7FAE9759C33D67F03D4430E5A36A04CB55366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

iemqyfl.dll

Path \??\c:\Program Files\mrjmtyke\iemqyfl.dll
Size 97KB
SHA256 389fbdcd49f94e21c054ad2317b70db7ccfcf36b3a4f07d6d4f1bacc64b60049
MD5 f28db8dacde3464220c5b83edb5225a2
SHA1 4cf8f09673ca1505a3c0a23098870baaddafd306
SHA512 e104bb97ae8980d14418ce0f7943fd7e0f5447dd6f8565829182ce48d66aff977213af78a2d4c3688b6d6ec8aea433f483b2c54160422cb799a22bd3ea91b66b
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbGd:5pG6Sg9txRk/SS6bGd
TLSH
T18AA301F6290D7DD6CB354839D6528E35F629EE348C589F887ECE6C13ACB8510E1641B1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2576-7-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/4308-0-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/4308-2-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/4328-10-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4328-11-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4328-13-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4328-16-0x0000000010000000-0x0000000010038000-memory.dmp

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