Resubmissions

04-02-2024 18:03

240204-wm61nshghj 10

05-08-2020 11:30

200805-k11vh8yarj 10

Analysis

  • max time kernel
    151s
  • max time network
    6s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    05-08-2020 11:30

General

  • Target

    a6f34907ae34f485e4091ba122886cb32a2cc27856d580fe289c8861d6241f27.exe

  • Size

    743KB

  • MD5

    3636153d8fdc065fc40aae264f39eb7f

  • SHA1

    3f62736088952839a2379bb33575fc1e963e784e

  • SHA256

    a6f34907ae34f485e4091ba122886cb32a2cc27856d580fe289c8861d6241f27

  • SHA512

    96337dc43b446f6a2793715a8716a4ee688f9e0587020554dcc9a65c21a0b3ea54a2cf29954e23485b0fc29897a84d73a8df560d8b3dfc6f1807b7ca2da8a2b8

Malware Config

Signatures

  • Kutaki

    Information stealer and keylogger that hides inside legitimate Visual Basic applications.

  • Kutaki Executable 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a6f34907ae34f485e4091ba122886cb32a2cc27856d580fe289c8861d6241f27.exe
    "C:\Users\Admin\AppData\Local\Temp\a6f34907ae34f485e4091ba122886cb32a2cc27856d580fe289c8861d6241f27.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1608
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
      2⤵
        PID:240
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe"
        2⤵
        • Executes dropped EXE
        • Maps connected drives based on registry
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1052

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
    • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
    • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
    • memory/240-2-0x0000000000000000-mapping.dmp
    • memory/1052-5-0x0000000000000000-mapping.dmp
    • memory/1052-9-0x0000000002AB0000-0x0000000002AC1000-memory.dmp
      Filesize

      68KB

    • memory/1052-10-0x0000000002AB0000-0x0000000002AC1000-memory.dmp
      Filesize

      68KB