Resubmissions

01-10-2024 06:10

241001-gxfh5svaqk 10

01-10-2024 06:10

241001-gw8hjaycpg 8

Analysis

  • max time kernel
    128s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-ja
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-jalocale:ja-jpos:windows10-2004-x64systemwindows
  • submitted
    01-10-2024 06:10

General

  • Target

    お見積り依頼.exe

  • Size

    617KB

  • MD5

    7c1e195506cf284e5b49c8b3233a17ca

  • SHA1

    21965a5bbbb0eb10a8943e0f0ad80f5077a87695

  • SHA256

    759bf48589770e15226a694e1d8ea23a58e69f5121958eb692c68d46a59a25b4

  • SHA512

    e785e17bee1abdc476ef3e12f76d5b77113ad318c4a0feb1f6a4f6060bf2ab0643d8af2d38c7718f83cbf60f0cbcb2b40037cccf9ef05b4d4aac62a8f551e27d

  • SSDEEP

    12288:B5oRpQVnipnobW7NGzGW9x252e96CjrzhnheagXJ:joUnKCqVvT8I/UJ

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 2 IoCs

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

  • Checks computer location settings 2 TTPs 2 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 1 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 37 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:3692
    • 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:5252
    • 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:3408
      • 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:2656
        • 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:1316
      • 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 SetWindowsHookEx
        PID:1056
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
        1⤵
          PID:2056
        • 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:3848
          • 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:3200
          • 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:3320
            • 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:4636
              • 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:2252
                • 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:3208

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              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

                e34ef80a24b2f7ee12e5aced2ca7443e

                SHA1

                2835284bee2e58b641d06871490d0e499e1730d2

                SHA256

                5044d58701f912837dcd8c69289e4f530baa103d9d3cb03e14366f2f7195d5fc

                SHA512

                752e152014324a2ebc53c01c2d0afba825987a971d8ae835b4e70dc194ede5e569e9a3687605844a7601b27f08d8fcd8b361c4d6c68d2822d663667df59baae2

              • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_shnilwhd.nu2.ps1

                Filesize

                60B

                MD5

                d17fe0a3f47be24a6453e9ef58c94641

                SHA1

                6ab83620379fc69f80c0242105ddffd7d98d5d9d

                SHA256

                96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                SHA512

                5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

              • memory/1056-69-0x000000001D210000-0x000000001D31E000-memory.dmp

                Filesize

                1.1MB

              • memory/1056-72-0x000000001D6E0000-0x000000001D702000-memory.dmp

                Filesize

                136KB

              • memory/1056-70-0x0000000004E40000-0x0000000004E4E000-memory.dmp

                Filesize

                56KB

              • memory/1056-71-0x000000001D960000-0x000000001DB06000-memory.dmp

                Filesize

                1.6MB

              • memory/1316-67-0x0000000006BC0000-0x0000000006D82000-memory.dmp

                Filesize

                1.8MB

              • memory/1316-12-0x0000000000400000-0x0000000000426000-memory.dmp

                Filesize

                152KB

              • memory/1316-14-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/1316-36-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/1316-68-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/1316-66-0x00000000067F0000-0x0000000006804000-memory.dmp

                Filesize

                80KB

              • memory/1316-65-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/3200-99-0x0000000007B60000-0x0000000007B71000-memory.dmp

                Filesize

                68KB

              • memory/3200-98-0x00000000078E0000-0x0000000007983000-memory.dmp

                Filesize

                652KB

              • memory/3200-85-0x0000000005E90000-0x00000000061E4000-memory.dmp

                Filesize

                3.3MB

              • memory/3200-88-0x0000000070D00000-0x0000000070D4C000-memory.dmp

                Filesize

                304KB

              • memory/3200-87-0x0000000006740000-0x000000000678C000-memory.dmp

                Filesize

                304KB

              • memory/3200-100-0x0000000007C00000-0x0000000007C14000-memory.dmp

                Filesize

                80KB

              • memory/3692-17-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/3692-0-0x00000000750BE000-0x00000000750BF000-memory.dmp

                Filesize

                4KB

              • memory/3692-1-0x0000000000D60000-0x0000000000E00000-memory.dmp

                Filesize

                640KB

              • memory/3692-2-0x0000000005D40000-0x00000000062E4000-memory.dmp

                Filesize

                5.6MB

              • memory/3692-3-0x0000000005830000-0x00000000058C2000-memory.dmp

                Filesize

                584KB

              • memory/3692-4-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/3692-5-0x0000000005800000-0x000000000580A000-memory.dmp

                Filesize

                40KB

              • memory/3692-6-0x0000000008510000-0x000000000861E000-memory.dmp

                Filesize

                1.1MB

              • memory/3692-7-0x0000000008490000-0x00000000084AE000-memory.dmp

                Filesize

                120KB

              • memory/3692-8-0x00000000750BE000-0x00000000750BF000-memory.dmp

                Filesize

                4KB

              • memory/3692-9-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/3692-10-0x0000000005240000-0x00000000052A8000-memory.dmp

                Filesize

                416KB

              • memory/3692-11-0x000000000CF90000-0x000000000D02C000-memory.dmp

                Filesize

                624KB

              • memory/5252-50-0x0000000006760000-0x000000000677E000-memory.dmp

                Filesize

                120KB

              • memory/5252-16-0x0000000005100000-0x0000000005728000-memory.dmp

                Filesize

                6.2MB

              • memory/5252-54-0x0000000007510000-0x000000000751A000-memory.dmp

                Filesize

                40KB

              • memory/5252-55-0x0000000007650000-0x00000000076A0000-memory.dmp

                Filesize

                320KB

              • memory/5252-56-0x0000000007740000-0x00000000077D6000-memory.dmp

                Filesize

                600KB

              • memory/5252-57-0x0000000007630000-0x0000000007641000-memory.dmp

                Filesize

                68KB

              • memory/5252-58-0x00000000076B0000-0x00000000076BE000-memory.dmp

                Filesize

                56KB

              • memory/5252-59-0x00000000076C0000-0x00000000076D4000-memory.dmp

                Filesize

                80KB

              • memory/5252-60-0x0000000007720000-0x000000000773A000-memory.dmp

                Filesize

                104KB

              • memory/5252-61-0x0000000007700000-0x0000000007708000-memory.dmp

                Filesize

                32KB

              • memory/5252-64-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/5252-20-0x0000000004EA0000-0x0000000004EC2000-memory.dmp

                Filesize

                136KB

              • memory/5252-19-0x0000000004ED0000-0x0000000004F62000-memory.dmp

                Filesize

                584KB

              • memory/5252-53-0x00000000074A0000-0x00000000074BA000-memory.dmp

                Filesize

                104KB

              • memory/5252-18-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/5252-52-0x0000000007AE0000-0x000000000815A000-memory.dmp

                Filesize

                6.5MB

              • memory/5252-15-0x00000000025D0000-0x0000000002606000-memory.dmp

                Filesize

                216KB

              • memory/5252-39-0x0000000007150000-0x0000000007182000-memory.dmp

                Filesize

                200KB

              • memory/5252-28-0x0000000005A00000-0x0000000005A66000-memory.dmp

                Filesize

                408KB

              • memory/5252-51-0x0000000007390000-0x0000000007433000-memory.dmp

                Filesize

                652KB

              • memory/5252-40-0x0000000070AE0000-0x0000000070B2C000-memory.dmp

                Filesize

                304KB

              • memory/5252-38-0x0000000006180000-0x00000000061CC000-memory.dmp

                Filesize

                304KB

              • memory/5252-37-0x0000000006160000-0x000000000617E000-memory.dmp

                Filesize

                120KB

              • memory/5252-21-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/5252-35-0x0000000005910000-0x0000000005920000-memory.dmp

                Filesize

                64KB

              • memory/5252-34-0x0000000005A70000-0x0000000005DC4000-memory.dmp

                Filesize

                3.3MB

              • memory/5252-29-0x00000000750B0000-0x0000000075860000-memory.dmp

                Filesize

                7.7MB

              • memory/5252-27-0x0000000005920000-0x0000000005986000-memory.dmp

                Filesize

                408KB