Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    14-11-2020 18:32

General

  • Target

    522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe

  • Size

    365KB

  • MD5

    1ec1a06e9206527fa74c5560f1fa71b7

  • SHA1

    808955643df13e421c270e377c819cde4dd2c845

  • SHA256

    522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2

  • SHA512

    f6d860a6b21db89615e90caadcc33734a0c6c1a0953fec6d9c0e9330dfb12d8455536ba7c398e86ed33d5e18490cc58ddae3b0c09733bbd1f58394cb5562c604

Malware Config

Extracted

Family

ursnif

Attributes
  • dga_base_url

  • dga_crc

    0

  • dga_season

    0

  • dga_tlds

  • dns_servers

Signatures

  • Gozi, Gozi IFSB

    Gozi ISFB is a well-known and widely distributed banking trojan.

  • Ursnif, Dreambot

    Ursnif is a variant of the Gozi IFSB with more capabilities.

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Users\Admin\AppData\Local\Temp\522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe
      "C:\Users\Admin\AppData\Local\Temp\522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\4442\2221.bat" "C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe" "C:\Users\Admin\AppData\Local\Temp\522B12~1.EXE""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:748
        • C:\Windows\SysWOW64\cmd.exe
          cmd /C ""C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe" "C:\Users\Admin\AppData\Local\Temp\522B12~1.EXE""
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1640
          • C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe
            "C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe" "C:\Users\Admin\AppData\Local\Temp\522B12~1.EXE"
            5⤵
            • Executes dropped EXE
            • Deletes itself
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1116
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe
              6⤵
              • Suspicious use of SetThreadContext
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:1088
    • C:\Windows\system32\cmd.exe
      cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\CC08.bi1"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:696
      • C:\Windows\system32\nslookup.exe
        nslookup myip.opendns.com resolver1.opendns.com
        3⤵
          PID:272
      • C:\Windows\system32\cmd.exe
        cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\CC08.bi1"
        2⤵
          PID:1644

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\4442\2221.bat

        MD5

        d257030180eb5ae26444ef279d2ce3f7

        SHA1

        886ef8cc6ded79fc1918a6c32f0280a6c44c215b

        SHA256

        e74cfd27c28bda2695c0fd912a8a76a6773cd57d4878c23e8b4b88a87d0a1d21

        SHA512

        3a159c25584e2b15db17c895514f93032cb99460eb8e1910884c2485b45e465fffc42126a0f1024d286ccd1d6f894aab852de4d7bebfc2f4950f90bcdbee1f1e

      • C:\Users\Admin\AppData\Local\Temp\CC08.bi1

        MD5

        c4f77466fa6bb3b7b587745fd51eb73e

        SHA1

        c9ee49b895e2cec4483b9e3d84e32f0d650edcbb

        SHA256

        37d5f9a9a4db772e5bcc6a0211a3092049c09f438067bc36cde152e10b79eeb8

        SHA512

        51c1ddeac48567d106cbcc5bad19b31639b73ec66d11ed83dbc90da880792df0b6bd6c6e28a712e854ceeb6bd96a3985e521cb9d666b0ccd087e96f4a90fc7d7

      • C:\Users\Admin\AppData\Local\Temp\CC08.bi1

        MD5

        c4f77466fa6bb3b7b587745fd51eb73e

        SHA1

        c9ee49b895e2cec4483b9e3d84e32f0d650edcbb

        SHA256

        37d5f9a9a4db772e5bcc6a0211a3092049c09f438067bc36cde152e10b79eeb8

        SHA512

        51c1ddeac48567d106cbcc5bad19b31639b73ec66d11ed83dbc90da880792df0b6bd6c6e28a712e854ceeb6bd96a3985e521cb9d666b0ccd087e96f4a90fc7d7

      • C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe

        MD5

        1ec1a06e9206527fa74c5560f1fa71b7

        SHA1

        808955643df13e421c270e377c819cde4dd2c845

        SHA256

        522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2

        SHA512

        f6d860a6b21db89615e90caadcc33734a0c6c1a0953fec6d9c0e9330dfb12d8455536ba7c398e86ed33d5e18490cc58ddae3b0c09733bbd1f58394cb5562c604

      • C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe

        MD5

        1ec1a06e9206527fa74c5560f1fa71b7

        SHA1

        808955643df13e421c270e377c819cde4dd2c845

        SHA256

        522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2

        SHA512

        f6d860a6b21db89615e90caadcc33734a0c6c1a0953fec6d9c0e9330dfb12d8455536ba7c398e86ed33d5e18490cc58ddae3b0c09733bbd1f58394cb5562c604

      • \Users\Admin\AppData\Roaming\Devidisc\bcryider.exe

        MD5

        1ec1a06e9206527fa74c5560f1fa71b7

        SHA1

        808955643df13e421c270e377c819cde4dd2c845

        SHA256

        522b12f425adf3c974452ec25cc35090594cf94ae0f36ef4945c420b322a53a2

        SHA512

        f6d860a6b21db89615e90caadcc33734a0c6c1a0953fec6d9c0e9330dfb12d8455536ba7c398e86ed33d5e18490cc58ddae3b0c09733bbd1f58394cb5562c604

      • memory/272-14-0x0000000000000000-mapping.dmp

      • memory/696-13-0x0000000000000000-mapping.dmp

      • memory/748-0-0x0000000000000000-mapping.dmp

      • memory/1076-12-0x000007FEF77C0000-0x000007FEF7A3A000-memory.dmp

        Filesize

        2.5MB

      • memory/1088-9-0x000007FFFFFD8000-mapping.dmp

      • memory/1088-11-0x0000000000410000-0x000000000049F000-memory.dmp

        Filesize

        572KB

      • memory/1088-10-0x0000000000370000-0x00000000003A5000-memory.dmp

        Filesize

        212KB

      • memory/1088-7-0x0000000000000000-mapping.dmp

      • memory/1116-8-0x0000000001DF0000-0x0000000001E7F000-memory.dmp

        Filesize

        572KB

      • memory/1116-5-0x0000000000000000-mapping.dmp

      • memory/1640-2-0x0000000000000000-mapping.dmp

      • memory/1644-15-0x0000000000000000-mapping.dmp