Analysis

  • max time kernel
    209s
  • max time network
    212s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-ja
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-jalocale:ja-jpos:windows10-2004-x64systemwindows
  • submitted
    16-10-2024 00:18

General

  • Target

    お見積り依頼.exe

  • Size

    497KB

  • MD5

    5fb84fe04e1573be79533791aeaa9d34

  • SHA1

    df0f6db5d0bba16265f2210fce28d6b5c5c704cb

  • SHA256

    07544f90f1d6b64b394f2a1c8a8ab2283c8ac87eac9ea3128cc4e2af83c8e920

  • SHA512

    488075a3bc63b005a117726c4859743154cc0d75f0e57927e8eccf9e8ca929b68d1fd3fff5f2cd24f19afc4f05e9e934b683e00b83aa63ae4317db2a58f40f76

  • SSDEEP

    12288:FfUSZtmY7Q+JJxCq9MXWRZVk9BEe7v4joiZ6kD4o:FnbxzJxCq9MGNk9EUicm4

Malware Config

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 39 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.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
    "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2552
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4724
    • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
      "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
      2⤵
        PID:1496
      • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
        "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4776
    • C:\Windows\system32\mmc.exe
      "C:\Windows\system32\mmc.exe" "C:\Windows\system32\taskschd.msc" /s
      1⤵
      • Drops file in System32 directory
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:1992
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:112
      • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
        "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
        1⤵
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:904
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1652
        • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
          "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
          2⤵
            PID:2740
          • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
            "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
            2⤵
            • Accesses Microsoft Outlook profiles
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • outlook_office_path
            • outlook_win_path
            PID:3696
        • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
          "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
          1⤵
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3988
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
            2⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:3692
          • C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe
            "C:\Users\Admin\AppData\Local\Temp\お見積り依頼.exe"
            2⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            PID:2156

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

          Filesize

          2KB

          MD5

          968cb9309758126772781b83adb8a28f

          SHA1

          8da30e71accf186b2ba11da1797cf67f8f78b47c

          SHA256

          92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

          SHA512

          4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\お見積り依頼.exe.log

          Filesize

          1KB

          MD5

          8ec831f3e3a3f77e4a7b9cd32b48384c

          SHA1

          d83f09fd87c5bd86e045873c231c14836e76a05c

          SHA256

          7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

          SHA512

          26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          18KB

          MD5

          5c5252b072dcbe22812589cba933f29f

          SHA1

          cc3ede2404cfb15798b65e25d505558518ed8979

          SHA256

          8dbc305474bf98ba7c2bb86ddc5b600db0838a22c7fb672c5f4373eaf71734eb

          SHA512

          f4d82158537c6bb77607dd7da18d77d7fff6873f208ead3b208c55b5b4cef48ba3be24ecf467f86bfde378c038df3b0ff6baebe9712de6e19af5a5e23112a65f

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

          Filesize

          18KB

          MD5

          7dd63c9468b9599fbefc382c05aca017

          SHA1

          5db3f8234c8e7eb3c6a95edea9839565b017d5e4

          SHA256

          e7dabab09e415635f40d7da3a5155c8dcceea6e69d62370443366e946fa3af98

          SHA512

          03b05ba7ddc80a78ebd3b716f88e56943a116bfb5b5d57de689df8a535112b8c92b5aae645cd88ca76a1ec2c3ffd57407f2afb5bb3ec19ab1b2e53d61845e023

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_muprm0d4.chx.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/904-73-0x00000000059D0000-0x00000000059E2000-memory.dmp

          Filesize

          72KB

        • memory/1652-76-0x0000000005B70000-0x0000000005EC4000-memory.dmp

          Filesize

          3.3MB

        • memory/1652-87-0x0000000006430000-0x000000000647C000-memory.dmp

          Filesize

          304KB

        • memory/1652-88-0x0000000070790000-0x00000000707DC000-memory.dmp

          Filesize

          304KB

        • memory/1652-98-0x0000000007640000-0x00000000076E3000-memory.dmp

          Filesize

          652KB

        • memory/1652-99-0x00000000078E0000-0x00000000078F1000-memory.dmp

          Filesize

          68KB

        • memory/1652-100-0x0000000007980000-0x0000000007994000-memory.dmp

          Filesize

          80KB

        • memory/1992-71-0x000000001D560000-0x000000001D582000-memory.dmp

          Filesize

          136KB

        • memory/1992-68-0x000000001D310000-0x000000001D41E000-memory.dmp

          Filesize

          1.1MB

        • memory/1992-70-0x000000001D970000-0x000000001DB16000-memory.dmp

          Filesize

          1.6MB

        • memory/1992-69-0x0000000004F30000-0x0000000004F3E000-memory.dmp

          Filesize

          56KB

        • memory/2552-8-0x0000000074C3E000-0x0000000074C3F000-memory.dmp

          Filesize

          4KB

        • memory/2552-6-0x0000000004D00000-0x0000000004D9C000-memory.dmp

          Filesize

          624KB

        • memory/2552-1-0x0000000000010000-0x0000000000092000-memory.dmp

          Filesize

          520KB

        • memory/2552-2-0x0000000004FC0000-0x0000000005564000-memory.dmp

          Filesize

          5.6MB

        • memory/2552-3-0x0000000004AB0000-0x0000000004B42000-memory.dmp

          Filesize

          584KB

        • memory/2552-4-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/2552-14-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/2552-5-0x0000000004A90000-0x0000000004A9A000-memory.dmp

          Filesize

          40KB

        • memory/2552-0-0x0000000074C3E000-0x0000000074C3F000-memory.dmp

          Filesize

          4KB

        • memory/2552-11-0x0000000008B60000-0x0000000008C6E000-memory.dmp

          Filesize

          1.1MB

        • memory/2552-10-0x0000000005FD0000-0x0000000006038000-memory.dmp

          Filesize

          416KB

        • memory/2552-9-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/2552-7-0x0000000004E50000-0x0000000004E62000-memory.dmp

          Filesize

          72KB

        • memory/3692-127-0x0000000007830000-0x0000000007844000-memory.dmp

          Filesize

          80KB

        • memory/3692-126-0x0000000007790000-0x00000000077A1000-memory.dmp

          Filesize

          68KB

        • memory/3692-125-0x0000000007540000-0x00000000075E3000-memory.dmp

          Filesize

          652KB

        • memory/3692-112-0x0000000005C80000-0x0000000005FD4000-memory.dmp

          Filesize

          3.3MB

        • memory/3692-115-0x00000000708C0000-0x000000007090C000-memory.dmp

          Filesize

          304KB

        • memory/3692-114-0x0000000006310000-0x000000000635C000-memory.dmp

          Filesize

          304KB

        • memory/4724-18-0x00000000056C0000-0x0000000005CE8000-memory.dmp

          Filesize

          6.2MB

        • memory/4724-40-0x0000000070510000-0x000000007055C000-memory.dmp

          Filesize

          304KB

        • memory/4724-55-0x0000000007CC0000-0x0000000007D10000-memory.dmp

          Filesize

          320KB

        • memory/4724-56-0x0000000007DB0000-0x0000000007E46000-memory.dmp

          Filesize

          600KB

        • memory/4724-57-0x0000000007CA0000-0x0000000007CB1000-memory.dmp

          Filesize

          68KB

        • memory/4724-58-0x0000000007D20000-0x0000000007D2E000-memory.dmp

          Filesize

          56KB

        • memory/4724-59-0x0000000007D30000-0x0000000007D44000-memory.dmp

          Filesize

          80KB

        • memory/4724-60-0x0000000007D80000-0x0000000007D9A000-memory.dmp

          Filesize

          104KB

        • memory/4724-61-0x0000000007D70000-0x0000000007D78000-memory.dmp

          Filesize

          32KB

        • memory/4724-64-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4724-16-0x0000000005050000-0x0000000005086000-memory.dmp

          Filesize

          216KB

        • memory/4724-17-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4724-19-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4724-53-0x0000000007B10000-0x0000000007B2A000-memory.dmp

          Filesize

          104KB

        • memory/4724-52-0x0000000008160000-0x00000000087DA000-memory.dmp

          Filesize

          6.5MB

        • memory/4724-51-0x0000000007A00000-0x0000000007AA3000-memory.dmp

          Filesize

          652KB

        • memory/4724-50-0x0000000007780000-0x000000000779E000-memory.dmp

          Filesize

          120KB

        • memory/4724-54-0x0000000007B80000-0x0000000007B8A000-memory.dmp

          Filesize

          40KB

        • memory/4724-39-0x00000000077C0000-0x00000000077F2000-memory.dmp

          Filesize

          200KB

        • memory/4724-38-0x00000000067D0000-0x000000000681C000-memory.dmp

          Filesize

          304KB

        • memory/4724-37-0x0000000006790000-0x00000000067AE000-memory.dmp

          Filesize

          120KB

        • memory/4724-36-0x0000000005E80000-0x0000000005E90000-memory.dmp

          Filesize

          64KB

        • memory/4724-32-0x0000000006030000-0x0000000006384000-memory.dmp

          Filesize

          3.3MB

        • memory/4724-24-0x0000000005E90000-0x0000000005EF6000-memory.dmp

          Filesize

          408KB

        • memory/4724-25-0x0000000005F00000-0x0000000005F66000-memory.dmp

          Filesize

          408KB

        • memory/4724-23-0x0000000005CF0000-0x0000000005D12000-memory.dmp

          Filesize

          136KB

        • memory/4724-22-0x0000000005520000-0x00000000055B2000-memory.dmp

          Filesize

          584KB

        • memory/4724-21-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4776-20-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4776-67-0x0000000006BA0000-0x0000000006D62000-memory.dmp

          Filesize

          1.8MB

        • memory/4776-66-0x00000000067B0000-0x00000000067C4000-memory.dmp

          Filesize

          80KB

        • memory/4776-65-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4776-15-0x0000000074C30000-0x00000000753E0000-memory.dmp

          Filesize

          7.7MB

        • memory/4776-12-0x0000000000400000-0x0000000000426000-memory.dmp

          Filesize

          152KB