Analysis

  • max time kernel
    147s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-07-2022 14:52

General

  • Target

    SecuriteInfo.com.W32.AIDetectNet.01.22897.exe

  • Size

    825KB

  • MD5

    f10789db721c1dfdf2e74554508f23e7

  • SHA1

    12a2fb70d4e7358fc53e5f19ddfc91ae0f2ea018

  • SHA256

    5e26cb68b7cd24df50916757dd43c5357bcee359d05d8d8649749fdce26d540c

  • SHA512

    72a4cf5ca2d2fe08ee4b1b667e215801d750d1d8580d1fad90e06f0caf579b23969cda58a3534c1777a9617470aac784ba13ce4587ea3e856e7d2858480b7e49

Malware Config

Extracted

Family

blustealer

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    *LQ.2{zR5.5z4aXnk*

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4448
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5112
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe
      C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe
      2⤵
        PID:1252
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe
        C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe
        2⤵
          PID:2336
        • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe
          C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.22897.exe
          2⤵
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4276
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
            3⤵
              PID:4952

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Public\3037384246424646303030333036443242464246463030303330\SQLite3_StdCall.dll

          Filesize

          59KB

          MD5

          d77b227a28a78627c2323cac75948390

          SHA1

          e228c3951f2a9fd0febfe07390633ab4f35727f4

          SHA256

          527ec201dcd7695bd9830eb82ab35a3986121de9ea156193834aed9d79223b82

          SHA512

          5627fbc8bbb98f644e21f101a68f0e0b07b87c264d00ea227286bed8ab6dd4ebf5114f03b632604f775ff93666a409a1a179a81ebfc9246956ba8150ff5b0587

        • C:\Users\Public\3037384246424646303030333036443242464246463030303330\sqlite3.dll

          Filesize

          585KB

          MD5

          5405413fff79b8d9c747aa900f60f082

          SHA1

          71caf8907ddd9a3a25d71356bd2ce09bd293bd78

          SHA256

          3e5a28ffde07ac661c26b6ccf94e64c1c90b1f25b3b24c90605aa922b87642eb

          SHA512

          2f09a30fc4da5166bd665210fefa1d44ce344f0ec6a37f127d677aeb3ca4fc0d09b7c9c1540f57da1e3449b7f588a1c61115395e965fa153d4baa5033266ed66

        • memory/4276-148-0x0000000000400000-0x0000000000499000-memory.dmp

          Filesize

          612KB

        • memory/4276-154-0x0000000000400000-0x0000000000499000-memory.dmp

          Filesize

          612KB

        • memory/4276-145-0x0000000000400000-0x0000000000499000-memory.dmp

          Filesize

          612KB

        • memory/4276-143-0x0000000000400000-0x0000000000499000-memory.dmp

          Filesize

          612KB

        • memory/4448-131-0x0000000005000000-0x0000000005022000-memory.dmp

          Filesize

          136KB

        • memory/4448-130-0x0000000000440000-0x0000000000514000-memory.dmp

          Filesize

          848KB

        • memory/4952-150-0x00000000001A0000-0x00000000001AE000-memory.dmp

          Filesize

          56KB

        • memory/4952-153-0x0000000074060000-0x0000000074611000-memory.dmp

          Filesize

          5.7MB

        • memory/5112-133-0x0000000000F90000-0x0000000000FC6000-memory.dmp

          Filesize

          216KB

        • memory/5112-134-0x0000000004DF0000-0x0000000005418000-memory.dmp

          Filesize

          6.2MB

        • memory/5112-139-0x0000000006240000-0x000000000625A000-memory.dmp

          Filesize

          104KB

        • memory/5112-138-0x0000000007360000-0x00000000079DA000-memory.dmp

          Filesize

          6.5MB

        • memory/5112-135-0x0000000005490000-0x00000000054F6000-memory.dmp

          Filesize

          408KB

        • memory/5112-137-0x0000000005D20000-0x0000000005D3E000-memory.dmp

          Filesize

          120KB

        • memory/5112-136-0x0000000005500000-0x0000000005566000-memory.dmp

          Filesize

          408KB