farfli | d8ec5cd8d14ebffe7f1337109f4c07d815d673fa9b873ee4168f52eb32b2b752

Analysis

max time kernel
148s
max time network
140s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/08/2026, 10:07

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General

Target
2026-08-09_6a145b6e5e958670122a02f80fe54d7a_coinminer_elex_wannacry.exe
Size 296KB
Sample260809-l53e4avhma
SHA256 d8ec5cd8d14ebffe7f1337109f4c07d815d673fa9b873ee4168f52eb32b2b752
MD5 6a145b6e5e958670122a02f80fe54d7a
SHA1 f23dfb43fbebd8588b3b116f654a456bbf8e9cfe
SHA512 8508815a3822ac695c69a6f0d18f98b8d570dd4bcf30671f68326de3536e1d5d58c78e0e4e4ae5eb56ee0ed88fb5977e7dbc8e410219321db3a04d798444e2a3
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO:ywLcCmuErglr73aAD+
TLSH
T143540282E501DF07EC2FC7B6813E5E291217AF521B705597D3C4B91E26B3682B63A0DD
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/5196-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5196-10-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5196-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5196-17-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5196-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5196-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/5196-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/5196-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5196-10-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5196-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5196-17-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5196-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5196-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5196-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4136-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/4136-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x000600000001b86d-3.dat	UPX
behavioral2/memory/4616-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
4	5196	rundll32.exe
9	5196	rundll32.exe
10	5196	rundll32.exe
11	5196	rundll32.exe
12	5196	rundll32.exe
13	5196	rundll32.exe
16	5196	rundll32.exe
17	5196	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4616	fpjlr.exe

Executes dropped EXE 1 IoCs

pid	Process
4616	fpjlr.exe

Loads dropped DLL 1 IoCs

pid	Process
5196	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-1-5-21-189034102-168398478-1159367937-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\sskoeeql\\gtvtvist.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)	\??\a:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	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)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	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/4136-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/4136-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x000600000001b86d-3.dat	upx
behavioral2/memory/4616-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\sskoeeql	fpjlr.exe
File created	\??\c:\Program Files\sskoeeql\gtvtvist.dll	fpjlr.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
4232	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	2026-08-09_6a145b6e5e958670122a02f80fe54d7a_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	fpjlr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
4232	cmd.exe
3388	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	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
3388	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5196	rundll32.exe
5196	rundll32.exe
5196	rundll32.exe
5196	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5196	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4136	2026-08-09_6a145b6e5e958670122a02f80fe54d7a_coinminer_elex_wannacry.exe
4616	fpjlr.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4136 wrote to memory of 4232	4136	2026-08-09_6a145b6e5e958670122a02f80fe54d7a_coinminer_elex_wannacry.exe	89
PID 4232 wrote to memory of 3388	4232	cmd.exe	91
PID 4232 wrote to memory of 4616	4232	cmd.exe	92
PID 4616 wrote to memory of 5196	4616	fpjlr.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-09_6a145b6e5e958670122a02f80fe54d7a_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_6a145b6e5e958670122a02f80fe54d7a_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4136
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fpjlr.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_6a145b6e5e958670122a02f80fe54d7a_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:4232
- - 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:3388
- - C:\Users\Admin\AppData\Local\Temp\fpjlr.exe
    C:\Users\Admin\AppData\Local\Temp\\fpjlr.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_6a145b6e5e958670122a02f80fe54d7a_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:4616
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\sskoeeql\gtvtvist.dll",GetProc C:\Users\Admin\AppData\Local\Temp\fpjlr.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:5196

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

fpjlr.exe

Path C:\Users\Admin\AppData\Local\Temp\fpjlr.exe
Size 297KB
SHA256 cd7dec21f51fa08619228dc439023fd80eab247ae0c0d4c0f13924534f35c7a9
MD5 9883524e88c77da681dceec9fda90294
SHA1 620b832824f7412311a7337dfe876a01666e2ec3
SHA512 7170d331083d3684bd114e38e00bddb63693819779b95d9c42f8dcc604e69333311b85ec8d18ea3d6c9b4bcccdaff97d732bddd5cff027f4773cc4afca026323
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO4:ywLcCmuErglr73aAD+H
TLSH
T19C540282E501DF07EC2FC7B6813E5E291217AF621B705597D3C4B91E26B3682B63E0D9
MD5 SHA1 SHA512 SSDEEP TLSH

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gtvtvist.dll

Path \??\c:\Program Files\sskoeeql\gtvtvist.dll
Size 218KB
SHA256 8fff6f32fde094d3be8967da7c00b6d08c3f9c463a085f4ace7b51209df40d9d
MD5 d0cd1761739d2f0407cd02a79cc85033
SHA1 befb1a5288853fabc475c850257761fc246195ff
SHA512 6bcf529b795b10cd29fdaa832af46b235db7a19609f4662bbe4d54c9e03e056fa5e7ad7e314a8129a8102474aaa9335bc66834a5a30ffbf61f3049c97ea28021
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauytc:pnNwDTi3swddDiROXIm
TLSH
T1B524128BCF983873C5223379597951A0B9725290AFA1530D93E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4136-0-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/4136-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/4616-6-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/5196-12-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5196-9-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5196-14-0x0000000002840000-0x0000000002841000-memory.dmp

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memory/5196-10-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5196-15-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5196-17-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5196-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5196-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5196-20-0x0000000010000000-0x0000000010058000-memory.dmp

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