Analysis

  • max time kernel
    70s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20/09/2022, 09:00

General

  • Target

    SecuriteInfo.com.W32.Injector.FIHC-3037.22773.exe

  • Size

    105KB

  • MD5

    ac4b11253fd63a6f272bf10dabdbfb01

  • SHA1

    1892479a8d6b58642f57514b6bbd29ab4f7e5e62

  • SHA256

    7e7e4ddcd61df737e689389da1b59df402521f3310ad402c0696b97cf6ce3a20

  • SHA512

    34b90fb700e609065b1e0ecf8eaa3fa5f33ed470e8dd58b03874de808bbae304e52ac5c0f81c93e9ec798dcf6009cc76433899743fef8ea4db1fdb0fb9f60511

  • SSDEEP

    3072:Us+LplNxNXz3lxRXJWfH1lzsf+BaMPEGNXA8rD:UsKxNX1AP14xA7NXjv

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.overviewsupplies.com/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    w[3c2r?B,Of+

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 2 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

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

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.Injector.FIHC-3037.22773.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.Injector.FIHC-3037.22773.exe"
    1⤵
    • Checks QEMU agent file
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1848
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\caspol.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.Injector.FIHC-3037.22773.exe"
      2⤵
      • Checks QEMU agent file
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of WriteProcessMemory
      PID:1436
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 1584
        3⤵
          PID:1780

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Users\Admin\AppData\Local\Temp\nstE68A.tmp\System.dll

      Filesize

      11KB

      MD5

      883eff06ac96966270731e4e22817e11

      SHA1

      523c87c98236cbc04430e87ec19b977595092ac8

      SHA256

      44e5dfd551b38e886214bd6b9c8ee913c4c4d1f085a6575d97c3e892b925da82

      SHA512

      60333253342476911c84bbc1d9bf8a29f811207787fdd6107dce8d2b6e031669303f28133ffc811971ed7792087fe90fb1faabc0af4e91c298ba51e28109a390

    • memory/1436-65-0x0000000077280000-0x0000000077429000-memory.dmp

      Filesize

      1.7MB

    • memory/1436-68-0x0000000000401000-0x0000000000615000-memory.dmp

      Filesize

      2.1MB

    • memory/1436-77-0x00000000732C0000-0x000000007386B000-memory.dmp

      Filesize

      5.7MB

    • memory/1436-75-0x00000000732C0000-0x000000007386B000-memory.dmp

      Filesize

      5.7MB

    • memory/1436-70-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1436-63-0x0000000000080000-0x0000000000180000-memory.dmp

      Filesize

      1024KB

    • memory/1436-72-0x0000000000080000-0x0000000000180000-memory.dmp

      Filesize

      1024KB

    • memory/1436-67-0x0000000000400000-0x0000000000615000-memory.dmp

      Filesize

      2.1MB

    • memory/1848-56-0x0000000002730000-0x000000000337A000-memory.dmp

      Filesize

      12.3MB

    • memory/1848-71-0x0000000077460000-0x00000000775E0000-memory.dmp

      Filesize

      1.5MB

    • memory/1848-54-0x0000000076091000-0x0000000076093000-memory.dmp

      Filesize

      8KB

    • memory/1848-62-0x0000000077460000-0x00000000775E0000-memory.dmp

      Filesize

      1.5MB

    • memory/1848-61-0x0000000077460000-0x00000000775E0000-memory.dmp

      Filesize

      1.5MB

    • memory/1848-76-0x0000000077460000-0x00000000775E0000-memory.dmp

      Filesize

      1.5MB

    • memory/1848-57-0x0000000077280000-0x0000000077429000-memory.dmp

      Filesize

      1.7MB