farfli | b0385b23d9b44290833769c06c12436fb8a54dbeff54afbdb421a893347b9faf

General

Target
2026-08-09_95879d55093ab57c8cc1eed3962bf834_coinminer_elex_wannacry.exe
Size 415KB
Sample260809-hd2spsar4y
SHA256 b0385b23d9b44290833769c06c12436fb8a54dbeff54afbdb421a893347b9faf
MD5 95879d55093ab57c8cc1eed3962bf834
SHA1 b972ae9e227adf75d9789092fe0608fa3c88ccf5
SHA512 7dbcd9cc6044116e343101d6b90c16cfc44a753fcee7858279535183fd3a22186219ac41522e6b85b47f50dc35d666867d0130192545bafd58ef31f7f110f958
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6Lw:jGmTju+mMC4ITJE8dfSJ/F60
TLSH
T1BC94D02272D0CBA3C0856432CE66E63CD3E5CC689D705E3773E9FA5DEA36941423A275
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/4912-8-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/4912-6-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/4912-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/4912-8-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4912-6-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4912-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000011390-1.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
7	4912	rundll32.exe
9	4912	rundll32.exe
10	4912	rundll32.exe
11	4912	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3076	saslu.exe

Executes dropped EXE 1 IoCs

pid	Process
3076	saslu.exe

Loads dropped DLL 1 IoCs

pid	Process
4912	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-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\udebv\\manxg.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)	\??\o:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\k:	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)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	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)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\udebv	saslu.exe
File created	\??\c:\Program Files\udebv\manxg.dll	saslu.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
4296	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_95879d55093ab57c8cc1eed3962bf834_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	saslu.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
4296	cmd.exe
4608	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
4608	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe
4912	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3956	2026-08-09_95879d55093ab57c8cc1eed3962bf834_coinminer_elex_wannacry.exe
3076	saslu.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3956 wrote to memory of 4296	3956	2026-08-09_95879d55093ab57c8cc1eed3962bf834_coinminer_elex_wannacry.exe	89
PID 4296 wrote to memory of 4608	4296	cmd.exe	91
PID 4296 wrote to memory of 3076	4296	cmd.exe	92
PID 3076 wrote to memory of 4912	3076	saslu.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-09_95879d55093ab57c8cc1eed3962bf834_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_95879d55093ab57c8cc1eed3962bf834_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\saslu.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_95879d55093ab57c8cc1eed3962bf834_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:4296
- - 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:4608
- - C:\Users\Admin\AppData\Local\Temp\saslu.exe
    C:\Users\Admin\AppData\Local\Temp\\saslu.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_95879d55093ab57c8cc1eed3962bf834_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:3076
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\udebv\manxg.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\saslu.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:4912

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

saslu.exe

Path C:\Users\Admin\AppData\Local\Temp\saslu.exe
Size 416KB
SHA256 c9c104a98b0163efa89b1259ce85a9620d1788cd264ab270fdc5e0079d1e5291
MD5 e95d90a263a33d17bc0fc0422ec6df25
SHA1 24f0c0d7be822fda80161a344ace713a219c73ea
SHA512 f19815c4d8bcd33067095386d5d0d84cbe19866881413ea3c861937c96429c45a24a0713eeaab39b71d00ded8b7e613484215eca2175ee9526c9f3f4814fc394
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T11394D02272D0CBA3C0856432CE66E63CD3E5CC689D705E3773E9FA5DEA36941423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

manxg.dll

Path \??\c:\Program Files\udebv\manxg.dll
Size 176KB
SHA256 686e525a91969e41c68889790f75328481d5f2c95675513b3c7abd6bf9496cc2
MD5 34e6892065eb42898c76de9eefffc052
SHA1 d4180318e360bf96e79f8ea618f8f6026d1ae6ff
SHA512 4a8ac9d0a19507bf85df121620d468aa2a5ff5601945d54e3b648e84fbcdada6547ee8cc4d9635f3067c9338898c578b4bd87a9728d8194355ba4b896140cf19
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFooch:1Jv2tOItshGYdMnYYVjasKbOWSFofh
TLSH
T13E041261862D1C34D087B7717B05920DF6B452A49079CBD3F7B8AF2B3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4912-9-0x000000001005A000-0x000000001005B000-memory.dmp

Download

memory/4912-8-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/4912-6-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/4912-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads