Analysis

  • max time kernel
    59s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06-11-2022 23:26

General

  • Target

    cb4d017ce28a9b6d04ae3c7357c1983c9c989b56449749bf1b06d05939e4fd17.exe

  • Size

    815KB

  • MD5

    1056301c89aec5bddfeaa3ea47c22310

  • SHA1

    2b835c064ed4c5b1f98375ee9fe4a525b5cee0cc

  • SHA256

    cb4d017ce28a9b6d04ae3c7357c1983c9c989b56449749bf1b06d05939e4fd17

  • SHA512

    f9ebf4bfdf6494bc8746e0bb1b16c087f90dbf9727083c8a6e7334f98751fafa9e41d523b7647b5cbbc6f85cf140a8a1becb9882014f36fe37f199f282b045a3

  • SSDEEP

    24576:dDPiBNLxYY3I2PcAa8XejW2olrvUIlwz4lpilhhdg:dDPirKY3I20AtpJZwz4lpilj+

Malware Config

Signatures

  • joker

    Joker is an Android malware that targets billing and SMS fraud.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 14 IoCs
  • Modifies registry class 10 IoCs
  • Modifies system certificate store 2 TTPs 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cb4d017ce28a9b6d04ae3c7357c1983c9c989b56449749bf1b06d05939e4fd17.exe
    "C:\Users\Admin\AppData\Local\Temp\cb4d017ce28a9b6d04ae3c7357c1983c9c989b56449749bf1b06d05939e4fd17.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1408
    • C:\Users\Admin\AppData\Local\Temp\cb4d017ce28a9b6d04ae3c7357c1983c9c989b56449749bf1b06d05939e4fd17.exe
      "C:\Users\Admin\AppData\Local\Temp\cb4d017ce28a9b6d04ae3c7357c1983c9c989b56449749bf1b06d05939e4fd17.exe"
      2⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      PID:1380
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0xc8
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1696

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1380-59-0x0000000000400000-0x00000000005E3000-memory.dmp

    Filesize

    1.9MB

  • memory/1380-60-0x0000000000400000-0x00000000005E3000-memory.dmp

    Filesize

    1.9MB

  • memory/1408-54-0x00000000750A1000-0x00000000750A3000-memory.dmp

    Filesize

    8KB

  • memory/1408-55-0x0000000000400000-0x00000000005E3000-memory.dmp

    Filesize

    1.9MB

  • memory/1408-57-0x0000000000400000-0x00000000005E3000-memory.dmp

    Filesize

    1.9MB