Analysis

  • max time kernel
    141s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
  • submitted
    07-04-2024 23:44

General

  • Target

    99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe

  • Size

    26KB

  • MD5

    8222cc29fdeb85cc5e71e5d2ba2cdc0e

  • SHA1

    467737c290a4db43806df42bcbdf4e37586a2f11

  • SHA256

    99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af

  • SHA512

    5cbae650c63b1f8d10943a9925af881b8dbafd27305997a0450c21993c45c862ed84b934860955f938ea3bdeffc791470e391370d933b2bc071cf72e7d07bb71

  • SSDEEP

    768:XkX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIoT:6KcR4mjD9r82E

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe
    "C:\Users\Admin\AppData\Local\Temp\99efa583e66941a2dd8c17d983876d4fe35de92e7be0b8d696c43580d129e1af.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Windows\CTS.exe
      "C:\Windows\CTS.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2920

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\HDSIydjWGXne9Va.exe

    Filesize

    26KB

    MD5

    81d787bcda4e33d069708211f44336ea

    SHA1

    165797c65a15336d4062a7c4b4a22366f4f9f872

    SHA256

    ff31cdb7c3577dba99ac67d10903687dfa2f9580539d4269c4e149db04b07dbd

    SHA512

    e4c1514cbd46d0de2dd08e42fe7f5f2b1b0b55724f15d898debf0050476b98de3cf98b094cb210ae6b2f776faea540902501a6500f653124a6e7d8ed75792d4d

  • C:\Windows\CTS.exe

    Filesize

    26KB

    MD5

    286211b8e0aad0533c45d8b8c351cc70

    SHA1

    cb54a305a566c00742fb972c4ee62266e880ea78

    SHA256

    1955407b2fd523e375303d560b987216b95105b421a8471218c0b65ceba847f3

    SHA512

    91eddd484a40aee3a7a9254fd6843b3d9dd455e6a2c4d685d499ab1704d8644a6dc604ad14449e96b0754ae3e6c1c14c16d068605aa4e39840e0421aa7a4be35

  • memory/1600-0-0x0000000000E10000-0x0000000000E27000-memory.dmp

    Filesize

    92KB

  • memory/1600-4-0x0000000000070000-0x0000000000087000-memory.dmp

    Filesize

    92KB

  • memory/1600-12-0x0000000000070000-0x0000000000087000-memory.dmp

    Filesize

    92KB

  • memory/1600-10-0x0000000000E10000-0x0000000000E27000-memory.dmp

    Filesize

    92KB

  • memory/1600-21-0x0000000000070000-0x0000000000087000-memory.dmp

    Filesize

    92KB

  • memory/2920-13-0x0000000000FD0000-0x0000000000FE7000-memory.dmp

    Filesize

    92KB