farfli | 25158d9e552906fd1641738f7515b96090801d2f17885646f9ea15d7cd0449d2

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
06/08/2026, 11:06

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General

Target
2026-08-06_e23e08f3c99348c1458602af62843cde_coinminer_elex_wannacry.exe
Size 312KB
Sample260806-m7lqsshc63
SHA256 25158d9e552906fd1641738f7515b96090801d2f17885646f9ea15d7cd0449d2
MD5 e23e08f3c99348c1458602af62843cde
SHA1 6e6620c8ab643e47276adee7731fdae433050e57
SHA512 0ee650afbd7e34bdd1c8893f73b7524984b187b885a96c1f4d51cb8e8378df72da0311cb94e121ef30383819ce70da134f135952f6d68d4e5265b100739ee4c4
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO:ywLcCmuErglr73aAD+
TLSH
T13164F142D511CF47FC2FCAB6823E1E355317AE553B205693D3C8BA1F65B2B42A63A0D8
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 7 IoCs

resource	yara_rule
behavioral2/memory/7112-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/7112-10-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/7112-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/7112-17-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/7112-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/7112-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/7112-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/7112-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/7112-10-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/7112-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/7112-17-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/7112-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/7112-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/7112-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1184-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/1184-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x002a000000011561-3.dat	UPX
behavioral2/memory/5380-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
7	7112	rundll32.exe
9	7112	rundll32.exe
10	7112	rundll32.exe
11	7112	rundll32.exe
12	7112	rundll32.exe
14	7112	rundll32.exe
17	7112	rundll32.exe
18	7112	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5380	rnmdx.exe

Executes dropped EXE 1 IoCs

pid	Process
5380	rnmdx.exe

Loads dropped DLL 1 IoCs

pid	Process
7112	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-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\xkwue\\remzihon.dll\",GetProc"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	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

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1184-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/1184-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x002a000000011561-3.dat	upx
behavioral2/memory/5380-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\xkwue	rnmdx.exe
File created	\??\c:\Program Files\xkwue\remzihon.dll	rnmdx.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
2484	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rnmdx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-06_e23e08f3c99348c1458602af62843cde_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
2864	PING.EXE
2484	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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2864	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
7112	rundll32.exe
7112	rundll32.exe
7112	rundll32.exe
7112	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	7112	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1184	2026-08-06_e23e08f3c99348c1458602af62843cde_coinminer_elex_wannacry.exe
5380	rnmdx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 2484	1184	2026-08-06_e23e08f3c99348c1458602af62843cde_coinminer_elex_wannacry.exe	89
PID 2484 wrote to memory of 2864	2484	cmd.exe	91
PID 2484 wrote to memory of 5380	2484	cmd.exe	92
PID 5380 wrote to memory of 7112	5380	rnmdx.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-06_e23e08f3c99348c1458602af62843cde_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-06_e23e08f3c99348c1458602af62843cde_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rnmdx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-06_e23e08f3c99348c1458602af62843cde_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:2484
- - 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:2864
- - C:\Users\Admin\AppData\Local\Temp\rnmdx.exe
    C:\Users\Admin\AppData\Local\Temp\\rnmdx.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-06_e23e08f3c99348c1458602af62843cde_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:5380
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\xkwue\remzihon.dll",GetProc C:\Users\Admin\AppData\Local\Temp\rnmdx.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:7112

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

rnmdx.exe

Path C:\Users\Admin\AppData\Local\Temp\rnmdx.exe
Size 312KB
SHA256 695b5b38ed24a400e12cf28e20a1fb24f4d9f76451bd1fbd87c5b3cd1a90eec0
MD5 cbef2f2fdf685c5cd508e7c78ec55eb7
SHA1 66f93c1f13edcf95b54d0a10db8783fd218f7764
SHA512 7a2c9d962d53ab6c64ba696aeaf086d92c89658451562c0f4f6022063d500a1cc019623f0df5021d488df62f0c4472a3366a8efffde32ed342f40a1b810bf33f
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOl:ywLcCmuErglr73aAD+Q
TLSH
T12764F141D511CF47FC2FCAB6823E1E355317AE553B205693D3C8BA1FA5B2B42A63A0D8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

remzihon.dll

Path \??\c:\Program Files\xkwue\remzihon.dll
Size 218KB
SHA256 f36f8c3753bbaf6817a2148ee8a44d3a50a9797d1aaf8171c38c1fef7e2ae86d
MD5 fd72c2650bf5aa2c4caa7632a84b16af
SHA1 3e36712c71b12a8631340c4d32137b03be5bdb2b
SHA512 bde733c0ab23db445030ecb13d90d7bdafd33c859421518cd9e6f5aa6b01815596d195aef3f9a84dce83f3014efea9045abe595c55fe2528b488923468dc8eb9
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauytR:pnNwDTi3swddDiROXI/
TLSH
T171241287CF983873C5223379597951A0B9324290AFA1530DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1184-0-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/1184-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/5380-6-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/7112-12-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/7112-9-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/7112-14-0x00000000022B0000-0x00000000022B1000-memory.dmp

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memory/7112-10-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/7112-15-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/7112-17-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/7112-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/7112-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/7112-20-0x0000000010000000-0x0000000010058000-memory.dmp

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