Analysis

  • max time kernel
    144s
  • max time network
    113s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19-10-2022 14:15

General

  • Target

    tmp.exe

  • Size

    881KB

  • MD5

    4b28d8e218f5dfe20541b32fca297074

  • SHA1

    a5b715011f2bd3229e3acf3d88131a61043eba1a

  • SHA256

    ecd2c1eb9e0c374746d9148a15db8deb551d46d3c45bd075e7928b1f3210f4bc

  • SHA512

    04fac1bf2cb45ea967ddf9e5cf34fc1582b094fd0d0423ba6f56e889fb9e58b6b85f848201855446f540de19b8665fef1bc5d5f07face17955682cbcad4707ac

  • SSDEEP

    12288:rMXcyHcfKPLcYdXQawrPI2F2QVokACzkRj8U8oxfEunphMnX:QNcfMLciXQlrR2QukACgRHM

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5576673774:AAF__hFRh9bcJV72HkFb-9eZR9JNNyuOmFM/sendMessage?chat_id=1194722650

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 4 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:740
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1120
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        3⤵
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1704

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/740-54-0x0000000000C60000-0x0000000000D42000-memory.dmp

    Filesize

    904KB

  • memory/740-55-0x0000000075A81000-0x0000000075A83000-memory.dmp

    Filesize

    8KB

  • memory/740-56-0x0000000000930000-0x0000000000948000-memory.dmp

    Filesize

    96KB

  • memory/740-57-0x0000000000A80000-0x0000000000A8C000-memory.dmp

    Filesize

    48KB

  • memory/740-58-0x00000000009E0000-0x0000000000A60000-memory.dmp

    Filesize

    512KB

  • memory/740-59-0x00000000042D0000-0x00000000042FA000-memory.dmp

    Filesize

    168KB

  • memory/1120-63-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/1120-61-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/1120-60-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/1120-65-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/1120-68-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/1120-72-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/1120-82-0x0000000000400000-0x0000000000422000-memory.dmp

    Filesize

    136KB

  • memory/1704-73-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB

  • memory/1704-75-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB

  • memory/1704-78-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB

  • memory/1704-80-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB