farfli | f51df99c8c570fa1bda4ba543f519081f67f1203b09c93d42237f8f2e4cbf8d7

Analysis

max time kernel
150s
max time network
138s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
29/06/2026, 13:02

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General

Target
2026-06-26_b3feb3d6a044781424619c488790fb71_coinminer_elex_wannacry.exe
Size 401KB
Sample260629-p9tkjafx2m
SHA256 f51df99c8c570fa1bda4ba543f519081f67f1203b09c93d42237f8f2e4cbf8d7
MD5 b3feb3d6a044781424619c488790fb71
SHA1 51114e3e5942c6ad07f6642c6970bb99ea9c6db2
SHA512 b226ab2cd74c748c9578d3813cc0a67ff2dc0291b23d7a51bd430aaf53edb46c9cffae6d42f974c45e8308124971a3f9884a27528d9fec731afabb5486064dd7
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T1C094AF01E7C741D6DE8225B081FA7377B3789A490F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery 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
behavioral2/memory/5048-10-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/5048-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/5048-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/5048-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/5048-10-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5048-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5048-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5048-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/6012-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/6012-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x00130000000118d9-3.dat	UPX
behavioral2/memory/3140-7-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000d00000001c5d6-8.dat	UPX
behavioral2/memory/5048-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/5048-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/5048-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/5048-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
3140	qxueh.exe

Executes dropped EXE 2 IoCs

pid	Process
3140	qxueh.exe
5048	srn.exe

Loads dropped DLL 1 IoCs

pid	Process
5048	srn.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-1-5-21-3246620872-1649211507-2285877732-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\wzeuh\\srn.exe \"c:\\Program Files\\wzeuh\\srnrw.dll\",Viewer"	srn.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:	srn.exe
File opened (read-only)	\??\p:	srn.exe
File opened (read-only)	\??\w:	srn.exe
File opened (read-only)	\??\x:	srn.exe
File opened (read-only)	\??\y:	srn.exe
File opened (read-only)	\??\a:	srn.exe
File opened (read-only)	\??\g:	srn.exe
File opened (read-only)	\??\i:	srn.exe
File opened (read-only)	\??\u:	srn.exe
File opened (read-only)	\??\z:	srn.exe
File opened (read-only)	\??\d:	srn.exe
File opened (read-only)	\??\m:	srn.exe
File opened (read-only)	\??\n:	srn.exe
File opened (read-only)	\??\v:	srn.exe
File opened (read-only)	\??\b:	srn.exe
File opened (read-only)	\??\j:	srn.exe
File opened (read-only)	\??\l:	srn.exe
File opened (read-only)	\??\o:	srn.exe
File opened (read-only)	\??\q:	srn.exe
File opened (read-only)	\??\r:	srn.exe
File opened (read-only)	\??\s:	srn.exe
File opened (read-only)	\??\t:	srn.exe
File opened (read-only)	\??\h:	srn.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	srn.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\wzeuh\srn.exe	qxueh.exe
File opened for modification	\??\c:\Program Files\wzeuh	qxueh.exe
File created	\??\c:\Program Files\wzeuh\srnrw.dll	qxueh.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qxueh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	srn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-26_b3feb3d6a044781424619c488790fb71_coinminer_elex_wannacry.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
6344	PING.EXE
5824	cmd.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	srn.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	srn.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
6344	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5048	srn.exe
5048	srn.exe
5048	srn.exe
5048	srn.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5048	srn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
6012	2026-06-26_b3feb3d6a044781424619c488790fb71_coinminer_elex_wannacry.exe
3140	qxueh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 6012 wrote to memory of 5824	6012	2026-06-26_b3feb3d6a044781424619c488790fb71_coinminer_elex_wannacry.exe	90
PID 5824 wrote to memory of 6344	5824	cmd.exe	92
PID 5824 wrote to memory of 3140	5824	cmd.exe	93
PID 3140 wrote to memory of 5048	3140	qxueh.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-06-26_b3feb3d6a044781424619c488790fb71_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-26_b3feb3d6a044781424619c488790fb71_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:6012
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qxueh.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-26_b3feb3d6a044781424619c488790fb71_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5824
- - 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:6344
- - C:\Users\Admin\AppData\Local\Temp\qxueh.exe
    C:\Users\Admin\AppData\Local\Temp\\qxueh.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-26_b3feb3d6a044781424619c488790fb71_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:3140
  - - \??\c:\Program Files\wzeuh\srn.exe
      "c:\Program Files\wzeuh\srn.exe" "c:\Program Files\wzeuh\srnrw.dll",Viewer C:\Users\Admin\AppData\Local\Temp\qxueh.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:5048

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

srn.exe

Path C:\Program Files\wzeuh\srn.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

qxueh.exe

Path C:\Users\Admin\AppData\Local\Temp\qxueh.exe
Size 401KB
SHA256 f89acdea6764afd6903cbe184c179ca82f2a37f68342cb859f6db68e8d018708
MD5 6102e09b532cb095307a175001ca6dc4
SHA1 93596968d34b7fcb7a67fb11ac10a29d702d3717
SHA512 634fefd31af1770274a1b7aef7d66f69a7b8d405741241374c482047dcd94222e7715c65f14369f914a9015402a62c7180e752f362039317e140ba3fa2597b5f
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T15694AF01E7C741D6DE8225B081FA7376B3789A490F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

srnrw.dll

Path \??\c:\Program Files\wzeuh\srnrw.dll
Size 89KB
SHA256 39fdf726eb1db9685d4edc1971ec15eb933eb70e69c53d412d3594b8f4dfd6df
MD5 160e3799dac3ebf234fe3f821d2e74f1
SHA1 746331c3a60c00c15758ec73d8f9a39ce80f0ee8
SHA512 48178f6546a5dc24567335123069733127aecbf7d14c1c0473519e2fd9b2d094d5817ee976c1c878dc66ac1c01c1581ed22e49dce72523e77efa31b733d7962d
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGiF:M1uF6Feu2NlQOBcGi
TLSH
T1A39302C45665CD8BCCD87072727FAA4EE631C48CB941ACB34B5E12A31B36AF3D45A705
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3140-7-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/5048-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/5048-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/5048-13-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/5048-15-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/6012-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/6012-2-0x0000000000400000-0x0000000000471000-memory.dmp

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