farfli | da990792ba9ddccd81d22ffed10faaaecf8aa611e5f31cc36c7d81d1e4c9f479

General

Target
2026-08-31_d2a025fa358921decfe3d9b4d5997911_coinminer_elex_wannacry.exe
Size 421KB
Sample260831-rnfsnatdkd
SHA256 da990792ba9ddccd81d22ffed10faaaecf8aa611e5f31cc36c7d81d1e4c9f479
MD5 d2a025fa358921decfe3d9b4d5997911
SHA1 f9fafb5c1574d56a22e4a11398f90c62699fe629
SHA512 f7773479d0e61a4411287ace82bbd03d46c2b02ec34c543d7bc3ca89c5015ea495bd753371a112bd9f1da22186e526547e6e65779cbf50eea5dd7cb9e796ffe1
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T17494D02272D0CBA3D0856472CE66E63CD3E5CC689D705E3773E9F65EEA36901423A274
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 2 IoCs

resource	yara_rule
behavioral2/memory/3132-7-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/3132-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/3132-7-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3132-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000006977-1.dat	UPX

Badlisted process makes network request 3 IoCs

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

flow	pid	Process
7	3132	rundll32.exe
9	3132	rundll32.exe
10	3132	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4932	hloswgs.exe

Executes dropped EXE 1 IoCs

pid	Process
4932	hloswgs.exe

Loads dropped DLL 1 IoCs

pid	Process
3132	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\\jbuhyhy\\dksot.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)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\k:	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\jbuhyhy	hloswgs.exe
File created	\??\c:\Program Files\jbuhyhy\dksot.dll	hloswgs.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
2328	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	2026-08-31_d2a025fa358921decfe3d9b4d5997911_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	hloswgs.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
2328	cmd.exe
3412	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
3412	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3132	rundll32.exe
3132	rundll32.exe
3132	rundll32.exe
3132	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3132	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4616	2026-08-31_d2a025fa358921decfe3d9b4d5997911_coinminer_elex_wannacry.exe
4932	hloswgs.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 2328	4616	2026-08-31_d2a025fa358921decfe3d9b4d5997911_coinminer_elex_wannacry.exe	90
PID 2328 wrote to memory of 3412	2328	cmd.exe	92
PID 2328 wrote to memory of 4932	2328	cmd.exe	93
PID 4932 wrote to memory of 3132	4932	hloswgs.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-08-31_d2a025fa358921decfe3d9b4d5997911_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-31_d2a025fa358921decfe3d9b4d5997911_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hloswgs.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-31_d2a025fa358921decfe3d9b4d5997911_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:2328
- - 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:3412
- - C:\Users\Admin\AppData\Local\Temp\hloswgs.exe
    C:\Users\Admin\AppData\Local\Temp\\hloswgs.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-31_d2a025fa358921decfe3d9b4d5997911_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:4932
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\jbuhyhy\dksot.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\hloswgs.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:3132

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

hloswgs.exe

Path C:\Users\Admin\AppData\Local\Temp\hloswgs.exe
Size 422KB
SHA256 8431e958756d68e4019192755f905a99806b54f561e48e156e2f65b9b3720b6e
MD5 df84a56032c4393f2a47d97464f81761
SHA1 1e28d59c53948fe6cb0b957da2551b8e70c9af67
SHA512 85c66325312f12e0e83c48531f92b3be1c89a3f0ea7bee3ade5564146211118fc0cfcfc719f714310393012b5098eee06e27c5cb88532cd78597eedd542de386
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L9:jGmTju+mMC4ITJE8dfSJ/F6J
TLSH
T16994D02272D0CBA3D0856472CE66E63CD3E5CC689D705E3773E9F65EEA36901423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

dksot.dll

Path \??\c:\Program Files\jbuhyhy\dksot.dll
Size 176KB
SHA256 0ade25dd54e07ff13184609183fd9dacb1721799d012513de8a966073369d3ea
MD5 ba20382c180225e9d94662d60e690cf2
SHA1 406f66e2735b3bb7b345a48bfe94031a63f2d6d8
SHA512 f4cf988d4bddbc2fd43cf1733875d220af9a424c3b705fc7063afd4360cc732d1ae6a1a2c0478b85afeb62ea7804da3a00eb82be1feec9bdd9b849c47b32c780
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocq:1Jv2tOItshGYdMnYYVjasKbOWSFofq
TLSH
T19B041261862D1C34D087B7717B05920DF6B452A491B9CBD3F7B8AF2B3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3132-6-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/3132-9-0x000000001005A000-0x000000001005B000-memory.dmp

Download

memory/3132-7-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/3132-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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