farfli | 87eee8469e69a1436e003431599b84ff441937b382db6f7a0be6081efc670534

General

Target
2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_coinminer_elex_wannacry.exe
Size 421KB
Sample260906-wd84nsxtew
SHA256 87eee8469e69a1436e003431599b84ff441937b382db6f7a0be6081efc670534
MD5 cc8143db033edfe1ddbe0aa1d5507300
SHA1 1ab71279eaf7b99b53cc8a817e7319098ac152c1
SHA512 551cbd0741fcaff42ba34d8d19b755b94da097196e931ef03da837503ac382d6141151d786ac64336e3739e1f2dbc04173fa4c0ac354d93938e5c8e84f37b03c
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T10094D02272D0CBA3D0856472CE66E63CD3E5CC689D705E3773E9F65EEA36901423A274
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/1924-8-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/1924-6-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/1924-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/1924-8-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1924-6-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1924-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000011371-1.dat	UPX

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
8	1924	rundll32.exe
11	1924	rundll32.exe
10	1924	rundll32.exe
12	1924	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4704	txounp.exe

Executes dropped EXE 1 IoCs

pid	Process
4704	txounp.exe

Loads dropped DLL 1 IoCs

pid	Process
1924	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-1-5-21-4046655672-1449839301-2197395821-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\qebxrcmej\\iduuo.dll\",InitEngine"	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)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\qebxrcmej	txounp.exe
File created	\??\c:\Program Files\qebxrcmej\iduuo.dll	txounp.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
5596	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	txounp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_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
5596	cmd.exe
4348	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4348	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe
1924	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5684	2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_coinminer_elex_wannacry.exe
4704	txounp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5684 wrote to memory of 5596	5684	2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_coinminer_elex_wannacry.exe	90
PID 5596 wrote to memory of 4348	5596	cmd.exe	92
PID 5596 wrote to memory of 4704	5596	cmd.exe	93
PID 4704 wrote to memory of 1924	4704	txounp.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5684
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\txounp.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_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:5596
- - 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:4348
- - C:\Users\Admin\AppData\Local\Temp\txounp.exe
    C:\Users\Admin\AppData\Local\Temp\\txounp.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-06_cc8143db033edfe1ddbe0aa1d5507300_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:4704
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\qebxrcmej\iduuo.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\txounp.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:1924

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

txounp.exe

Path C:\Users\Admin\AppData\Local\Temp\txounp.exe
Size 422KB
SHA256 6ecf88d50a07a750ad445dfd0b520179a83cff8970f8ae25832b80ed6a482244
MD5 b640fd4360b96172db492540d69708b6
SHA1 8012503976c4c9af23a5b1687cf37ed90d55d50f
SHA512 746f6a843154181f3d9857bca28d5dcbc41e88bb6964c415c117dd575ee9261905ffbbaae415dc0501347bcd8b8cb00ccd8e47fe0a0a88b055eddb37473dabee
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T12C94C02272D0CBA3D0856472CE66E63CD3E5CC689D705E3773E9F65EEA36901423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

iduuo.dll

Path \??\c:\Program Files\qebxrcmej\iduuo.dll
Size 176KB
SHA256 0f8d8ba8f748bccc7931ea4687693bcdb497fa1196dbab076953d777094834d6
MD5 e42d3dbc727faf5ce793da28147ea738
SHA1 24a35e67403d605c6ed999bb9f69beef7bcd25b7
SHA512 f342e6883ba029e17c9c5cf7009f289d1219ab833e512695751b1c99631e5f69b0073bddd17c2d289f542b320d95c1e288fe5e88d79e6405d29ba81c56cc1ac9
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocA:1Jv2tOItshGYdMnYYVjasKbOWSFofA
TLSH
T110041261866D1C34C087B7717B05920DF6B453A49079CB93F7B8AF2B3D12AEA806E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1924-9-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/1924-8-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/1924-6-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/1924-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads