Analysis

  • max time kernel
    138s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-11-2022 18:21

General

  • Target

    5a75fa55211464cb6938bcc10ef921422b81d3fa1e864897bc15dcd96ab57e1b.exe

  • Size

    32KB

  • MD5

    0387eb52d9a0ba82e69b623d14425550

  • SHA1

    a20fa675abe285070999b9830decf78b81a3896e

  • SHA256

    5a75fa55211464cb6938bcc10ef921422b81d3fa1e864897bc15dcd96ab57e1b

  • SHA512

    e62309af8828648883a37abaa22828c253c90fb2ad4e0d8d86e2021e648cf070b27905c53a9e12d3e8511581bd9dcd7e742f4bb0277572743eb3bfbb0895b8fd

  • SSDEEP

    768:ryHus/t/jPMUY96cPvc0xJGKJxsLoI/CYR/9m:rm7/1T46Gc0xJwdL

Malware Config

Extracted

Family

joker

C2

http://tttie.oss-cn-shenzhen.aliyuncs.com

Signatures

  • joker

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

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a75fa55211464cb6938bcc10ef921422b81d3fa1e864897bc15dcd96ab57e1b.exe
    "C:\Users\Admin\AppData\Local\Temp\5a75fa55211464cb6938bcc10ef921422b81d3fa1e864897bc15dcd96ab57e1b.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    PID:4656

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4656-132-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/4656-133-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB