Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-03-2023 14:58

General

  • Target

    file.exe

  • Size

    111KB

  • MD5

    5b45640a3bd4fdc32df75aa462f5a167

  • SHA1

    fdc2b61ca7b5c31ba48155d364b8797990e2eaee

  • SHA256

    2e53a6710f04dd84cfd3ac1874a2a61e690568405f192e7cbf8a4df12da334c4

  • SHA512

    3f3e86e14f0a09bafd374da2417452bc69741e14c2d4e1a4b208a94e1a2c9cd3a0c4336ec23e9b046bcad051aac8d6f05d4477cb516c3700b27f21e023106963

  • SSDEEP

    3072:lb4MOYUuQaS+T8sv8X31OjqOjNhOYRbxqH8QW2zCrAZuRs5:wYUuQaS+T8sv8X31OXN1bgl

Score
8/10

Malware Config

Signatures

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

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

  • 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\ToxicEye\rat.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4904
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp92AF.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp92AF.tmp.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4220
      • C:\Windows\system32\tasklist.exe
        Tasklist /fi "PID eq 3908"
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:4396
      • C:\Windows\system32\find.exe
        find ":"
        3⤵
          PID:3352
        • C:\Windows\system32\timeout.exe
          Timeout /T 1 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:3216
        • C:\Users\ToxicEye\rat.exe
          "rat.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:5116
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\ToxicEye\rat.exe"
            4⤵
            • Creates scheduled task(s)
            PID:2380

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp92AF.tmp.bat

      Filesize

      181B

      MD5

      f96a89e958dbc581769ae47992099ac2

      SHA1

      21adfc348faeee6bc7a4ac796a931247964c1561

      SHA256

      c7ca8d0708476770f11ee9f87307f1e852158776d1fb1ac3eb342a2cdbb78a33

      SHA512

      be6d4d28ef2e898e4e2fc71b564bbbe9fb486af66b0f8c701331e5b63e2d6848452f861021488441b9a2aad6045b4185d61600d8da7070fbd6e289bd5df35d1b

    • C:\Users\ToxicEye\rat.exe

      Filesize

      111KB

      MD5

      5b45640a3bd4fdc32df75aa462f5a167

      SHA1

      fdc2b61ca7b5c31ba48155d364b8797990e2eaee

      SHA256

      2e53a6710f04dd84cfd3ac1874a2a61e690568405f192e7cbf8a4df12da334c4

      SHA512

      3f3e86e14f0a09bafd374da2417452bc69741e14c2d4e1a4b208a94e1a2c9cd3a0c4336ec23e9b046bcad051aac8d6f05d4477cb516c3700b27f21e023106963

    • C:\Users\ToxicEye\rat.exe

      Filesize

      111KB

      MD5

      5b45640a3bd4fdc32df75aa462f5a167

      SHA1

      fdc2b61ca7b5c31ba48155d364b8797990e2eaee

      SHA256

      2e53a6710f04dd84cfd3ac1874a2a61e690568405f192e7cbf8a4df12da334c4

      SHA512

      3f3e86e14f0a09bafd374da2417452bc69741e14c2d4e1a4b208a94e1a2c9cd3a0c4336ec23e9b046bcad051aac8d6f05d4477cb516c3700b27f21e023106963

    • memory/3908-133-0x000001F859C60000-0x000001F859C82000-memory.dmp

      Filesize

      136KB

    • memory/3908-134-0x000001F874340000-0x000001F874350000-memory.dmp

      Filesize

      64KB

    • memory/5116-142-0x0000019CF53E0000-0x0000019CF53F0000-memory.dmp

      Filesize

      64KB

    • memory/5116-143-0x0000019CF53E0000-0x0000019CF53F0000-memory.dmp

      Filesize

      64KB

    • memory/5116-144-0x0000019CF68A0000-0x0000019CF6916000-memory.dmp

      Filesize

      472KB

    • memory/5116-145-0x0000019CF69D0000-0x0000019CF6A7A000-memory.dmp

      Filesize

      680KB

    • memory/5116-146-0x0000019CF53E0000-0x0000019CF53F0000-memory.dmp

      Filesize

      64KB

    • memory/5116-147-0x0000019CF53E0000-0x0000019CF53F0000-memory.dmp

      Filesize

      64KB