Overview

overview

10

Static

static

3

ac4ea5f29e...86.exe

windows10-2004-x64

10

ac4ea5f29e...86.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    29/05/2026, 01:11

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General

  • Target
    ac4ea5f29efbd2a2dfaa5d066583460782918c2e0a29026833e8e054e3f66686.exe
  • Size 262KB
  • Sample260529-bj81msfx2w
  • SHA256 ac4ea5f29efbd2a2dfaa5d066583460782918c2e0a29026833e8e054e3f66686
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoorbootkitdiscoveryfarflipersistencespywarestealer

Malware Config

Signatures

  • Family: Farfli

    Farfli is a Windows backdoor written in C++.

    backdoorfarfli
  • Detects Farfli Backdoor 2 IoCs
  • Badlisted process makes network request 15 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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.

    bootkitpersistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac4ea5f29efbd2a2dfaa5d066583460782918c2e0a29026833e8e054e3f66686.exe
    "C:\Users\Admin\AppData\Local\Temp\ac4ea5f29efbd2a2dfaa5d066583460782918c2e0a29026833e8e054e3f66686.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ahjjz.exe "C:\Users\Admin\AppData\Local\Temp\ac4ea5f29efbd2a2dfaa5d066583460782918c2e0a29026833e8e054e3f66686.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2120
      • 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:1760
      • C:\Users\Admin\AppData\Local\Temp\ahjjz.exe
        C:\Users\Admin\AppData\Local\Temp\\ahjjz.exe "C:\Users\Admin\AppData\Local\Temp\ac4ea5f29efbd2a2dfaa5d066583460782918c2e0a29026833e8e054e3f66686.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1228
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\gcnzl\fwgbvdd.wbf",RAFlush C:\Users\Admin\AppData\Local\Temp\ahjjz.exe
          4⤵
          • Badlisted process makes network request
          • Checks computer location settings
          • 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
          • Suspicious use of WriteProcessMemory
          PID:4364
          • C:\wiseman.exe
            "C:\wiseman.exe"
            5⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:920
  • C:\wiseman.exe
    C:\wiseman.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:3472

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        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

        1
        T1120

        Query Registry

        3
        T1012

        Remote System Discovery

        1
        T1018

        System Information Discovery

        4
        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

        Replay Monitor

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        Downloads

        ahjjz.exe
        • Path C:\Users\Admin\AppData\Local\Temp\ahjjz.exe
        • Size 262KB
        • SHA256 615f3edd7f7a4b8f9d7e136668e14725a232de0ebcc4d1c30588edb85f1112a4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        wiseman.exe
        • Path C:\wiseman.exe
        • Size 378KB
        • SHA256 03505198d487e04a8ec82c627d34e4d9145f211140c4c8793b4461621e6bf6ce
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        fwgbvdd.wbf
        • Path \??\c:\gcnzl\fwgbvdd.wbf
        • Size 155KB
        • SHA256 ec6ef50587a847d4a655e9bfc5c1aee4078005c0774a3e6fa23949cc4d8fbad3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1228-10-0x0000000000400000-0x000000000049E01B-memory.dmp
        Download

        memory/1264-0-0x0000000000400000-0x000000000049E01B-memory.dmp
        Download

        memory/1264-3-0x0000000000400000-0x000000000049E01B-memory.dmp
        Download

        memory/4364-13-0x0000000010000000-0x0000000010054000-memory.dmp
        Download

        memory/4364-18-0x0000000010000000-0x0000000010054000-memory.dmp
        Download

        memory/4364-22-0x0000000010000000-0x0000000010054000-memory.dmp
        Download