Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-10-2023 15:23

General

  • Target

    a9d70cfd0e530d7fde83f53a7f1945f1a59995d17caab36141788d7074bc6d7b.exe

  • Size

    3.0MB

  • MD5

    ad1899b8ed8a1064806d93a6b04a7087

  • SHA1

    4ae5cdd51b169b9993e3729d3f83a7b87ea8e401

  • SHA256

    a9d70cfd0e530d7fde83f53a7f1945f1a59995d17caab36141788d7074bc6d7b

  • SHA512

    2ff5d82b538e452c144851a4ae6dda968deaeb5bd4753dcab2ee4f26912629dbcad6c66b0e3b2aaf47bcb35eba83c15bfcaa906d32cece2eab8df76daf6f2e9e

  • SSDEEP

    49152:rTGkQT5QZuTtS0rQMYOQ+q8CEdTG4QxTGHQO9KFeMy:rKkoWsM0r1Qn2K44KHx0Fer

Score
8/10
upx

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 8 IoCs

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

  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Drops file in System32 directory 16 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: LoadsDriver 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:628
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:3168
      • C:\Users\Admin\AppData\Local\Temp\a9d70cfd0e530d7fde83f53a7f1945f1a59995d17caab36141788d7074bc6d7b.exe
        "C:\Users\Admin\AppData\Local\Temp\a9d70cfd0e530d7fde83f53a7f1945f1a59995d17caab36141788d7074bc6d7b.exe"
        2⤵
        • Checks computer location settings
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4468
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 1 & del /Q /F "C:\Users\Admin\AppData\Local\Temp\a9d70cfd0e530d7fde83f53a7f1945f1a59995d17caab36141788d7074bc6d7b.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:5024
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 1
            4⤵
            • Delays execution with timeout.exe
            PID:4220
      • C:\Windows\Fonts\aitstatic.exe
        "C:\Windows\Fonts\aitstatic.exe"
        2⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2064
    • C:\Windows\Syswow64\c261fc3a
      C:\Windows\Syswow64\c261fc3a
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3340
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 1 & del /Q /F "C:\Windows\Syswow64\c261fc3a"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4460
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 1
          3⤵
          • Delays execution with timeout.exe
          PID:4844

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\Fonts\aitstatic.exe

      Filesize

      3.1MB

      MD5

      64ed2d2c45644c1cd48904bf39e5e5f6

      SHA1

      ddbb9fc71f4a4fcc478c40a3b8e4c87fce415317

      SHA256

      6c21c0c38032da60fcb777cd1706d3630ec541a61d63bcc4c7a28a7008da16d4

      SHA512

      a2b7a6d264e7a244e4974d7e1886d501e2de9f2bb1e55ad2a7eca61e65ac6badf648b12c3a00fc756e5063a298fe165f70dcaca2d7e0dd2a784606f871b18c60

    • C:\Windows\SysWOW64\c261fc3a

      Filesize

      3.0MB

      MD5

      bed148519984ca93328117d759fd0459

      SHA1

      d9acf5921d9b887d3c1a76293aee13dd01e562af

      SHA256

      632717c4cd7118045a362f229f870edc09d1e1ca1a838d0b331d51e1ac689d6c

      SHA512

      b1fbfeea36b50085488b719285684ae9d4268137e59ef41c803930e09d6650ce9d892cd1e3ae4d7dee50fcb1d9857b3c67fbb03ebc9fa5b8887f670de09d76ea

    • C:\Windows\SysWOW64\c261fc3a

      Filesize

      3.0MB

      MD5

      bed148519984ca93328117d759fd0459

      SHA1

      d9acf5921d9b887d3c1a76293aee13dd01e562af

      SHA256

      632717c4cd7118045a362f229f870edc09d1e1ca1a838d0b331d51e1ac689d6c

      SHA512

      b1fbfeea36b50085488b719285684ae9d4268137e59ef41c803930e09d6650ce9d892cd1e3ae4d7dee50fcb1d9857b3c67fbb03ebc9fa5b8887f670de09d76ea

    • memory/628-28-0x0000021225690000-0x00000212256B8000-memory.dmp

      Filesize

      160KB

    • memory/2064-83-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-94-0x000001EB1C5C0000-0x000001EB1C5CE000-memory.dmp

      Filesize

      56KB

    • memory/2064-95-0x000001EB1C5C0000-0x000001EB1C5CE000-memory.dmp

      Filesize

      56KB

    • memory/2064-73-0x000001EB1CAA0000-0x000001EB1CB40000-memory.dmp

      Filesize

      640KB

    • memory/2064-19-0x000001EB1C310000-0x000001EB1C3DB000-memory.dmp

      Filesize

      812KB

    • memory/2064-21-0x000001EB1C310000-0x000001EB1C3DB000-memory.dmp

      Filesize

      812KB

    • memory/2064-23-0x00007FFF92020000-0x00007FFF92030000-memory.dmp

      Filesize

      64KB

    • memory/2064-93-0x000001EB1C5C0000-0x000001EB1C5CE000-memory.dmp

      Filesize

      56KB

    • memory/2064-92-0x000001EB1C5C0000-0x000001EB1C5CE000-memory.dmp

      Filesize

      56KB

    • memory/2064-91-0x000001EB1C5C0000-0x000001EB1C5CE000-memory.dmp

      Filesize

      56KB

    • memory/2064-90-0x000001EB1C5C0000-0x000001EB1C5CE000-memory.dmp

      Filesize

      56KB

    • memory/2064-61-0x00007FFF92020000-0x00007FFF92030000-memory.dmp

      Filesize

      64KB

    • memory/2064-62-0x000001EB1C310000-0x000001EB1C3DB000-memory.dmp

      Filesize

      812KB

    • memory/2064-63-0x0000021225690000-0x00000212256B8000-memory.dmp

      Filesize

      160KB

    • memory/2064-89-0x000001EB1C5C0000-0x000001EB1C5C1000-memory.dmp

      Filesize

      4KB

    • memory/2064-65-0x000001EB1C310000-0x000001EB1C3DB000-memory.dmp

      Filesize

      812KB

    • memory/2064-72-0x000001EB1C5E0000-0x000001EB1C5E1000-memory.dmp

      Filesize

      4KB

    • memory/2064-67-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-68-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-69-0x0000021225690000-0x00000212256B8000-memory.dmp

      Filesize

      160KB

    • memory/2064-70-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-71-0x000001EB1C5F0000-0x000001EB1C5FF000-memory.dmp

      Filesize

      60KB

    • memory/2064-75-0x000001EB1C5E0000-0x000001EB1C5E2000-memory.dmp

      Filesize

      8KB

    • memory/2064-88-0x000001EB1C5C0000-0x000001EB1C5CE000-memory.dmp

      Filesize

      56KB

    • memory/2064-66-0x000001EB1C5E0000-0x000001EB1C5E1000-memory.dmp

      Filesize

      4KB

    • memory/2064-74-0x000001EB1CAA0000-0x000001EB1CB40000-memory.dmp

      Filesize

      640KB

    • memory/2064-77-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-76-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-78-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-79-0x000001EB1CAA0000-0x000001EB1CB40000-memory.dmp

      Filesize

      640KB

    • memory/2064-80-0x000001EB1CB80000-0x000001EB1CB81000-memory.dmp

      Filesize

      4KB

    • memory/2064-82-0x000001EB1C5E0000-0x000001EB1C5E2000-memory.dmp

      Filesize

      8KB

    • memory/2064-87-0x000001EB1C5C0000-0x000001EB1C5C1000-memory.dmp

      Filesize

      4KB

    • memory/2064-81-0x000001EB1CAA0000-0x000001EB1CB40000-memory.dmp

      Filesize

      640KB

    • memory/2064-84-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-85-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/2064-86-0x000001EB1C600000-0x000001EB1C601000-memory.dmp

      Filesize

      4KB

    • memory/3168-12-0x00000000030D0000-0x00000000030D3000-memory.dmp

      Filesize

      12KB

    • memory/3168-10-0x00000000030D0000-0x00000000030D3000-memory.dmp

      Filesize

      12KB

    • memory/3168-14-0x0000000008BC0000-0x0000000008CB7000-memory.dmp

      Filesize

      988KB

    • memory/3340-64-0x0000000000160000-0x00000000001E9000-memory.dmp

      Filesize

      548KB

    • memory/3340-27-0x0000000000160000-0x00000000001E9000-memory.dmp

      Filesize

      548KB

    • memory/3340-4-0x0000000000160000-0x00000000001E9000-memory.dmp

      Filesize

      548KB

    • memory/4468-0-0x0000000000AE0000-0x0000000000B69000-memory.dmp

      Filesize

      548KB

    • memory/4468-35-0x0000000000AE0000-0x0000000000B69000-memory.dmp

      Filesize

      548KB

    • memory/4468-25-0x0000000000AE0000-0x0000000000B69000-memory.dmp

      Filesize

      548KB