Analysis

  • max time kernel
    143s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    13-11-2020 15:39

General

  • Target

    d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe

  • Size

    327KB

  • MD5

    2e2ed2b2bc917a92eb0d9bdb466da3b9

  • SHA1

    f361d57f199c8a75c8e92b5ff0385e978cda0e53

  • SHA256

    d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702

  • SHA512

    7011c2fea9a87c19b86ce4fff579a7e73796ea9fc4474880ef0f84801f86a37b385b54cb271dc486f38ff3fd6f1727d0ac640e7155f1fa297b80e61e360fa844

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:1276
    • C:\Users\Admin\AppData\Local\Temp\d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe
      "C:\Users\Admin\AppData\Local\Temp\d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1848
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\2472\1239.bat" "C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe" "C:\Users\Admin\AppData\Local\Temp\D0C6A4~1.EXE""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1428
        • C:\Windows\SysWOW64\cmd.exe
          cmd /C ""C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe" "C:\Users\Admin\AppData\Local\Temp\D0C6A4~1.EXE""
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1996
          • C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe
            "C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe" "C:\Users\Admin\AppData\Local\Temp\D0C6A4~1.EXE"
            5⤵
            • Executes dropped EXE
            • Deletes itself
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1980
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe
              6⤵
              • Suspicious use of SetThreadContext
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:604
    • C:\Windows\system32\cmd.exe
      cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\B52E.bi1"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:660
      • C:\Windows\system32\nslookup.exe
        nslookup myip.opendns.com resolver1.opendns.com
        3⤵
          PID:1916
      • C:\Windows\system32\cmd.exe
        cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\B52E.bi1"
        2⤵
          PID:1076

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Modify Registry

      1
      T1112

      Credential Access

      Credentials in Files

      1
      T1081

      Collection

      Data from Local System

      1
      T1005

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\2472\1239.bat
        MD5

        9b1bd114aff92414683f6e7197aadc34

        SHA1

        321d20055bf5661156ae5a9f301a8209004eabfb

        SHA256

        d9455f4a34a110acd243d8b806752049980c5629fe44a779d1b7529c587f76ba

        SHA512

        cdfe277913ece2f3adac282e462bb4a327f615ffb94d1f56c411f5844ccfef8ee6c878068db899e27857f56fed3800c1bcd97035e5f14b87d73b67b8152d79fa

      • C:\Users\Admin\AppData\Local\Temp\B52E.bi1
        MD5

        c4f77466fa6bb3b7b587745fd51eb73e

        SHA1

        c9ee49b895e2cec4483b9e3d84e32f0d650edcbb

        SHA256

        37d5f9a9a4db772e5bcc6a0211a3092049c09f438067bc36cde152e10b79eeb8

        SHA512

        51c1ddeac48567d106cbcc5bad19b31639b73ec66d11ed83dbc90da880792df0b6bd6c6e28a712e854ceeb6bd96a3985e521cb9d666b0ccd087e96f4a90fc7d7

      • C:\Users\Admin\AppData\Local\Temp\B52E.bi1
        MD5

        c4f77466fa6bb3b7b587745fd51eb73e

        SHA1

        c9ee49b895e2cec4483b9e3d84e32f0d650edcbb

        SHA256

        37d5f9a9a4db772e5bcc6a0211a3092049c09f438067bc36cde152e10b79eeb8

        SHA512

        51c1ddeac48567d106cbcc5bad19b31639b73ec66d11ed83dbc90da880792df0b6bd6c6e28a712e854ceeb6bd96a3985e521cb9d666b0ccd087e96f4a90fc7d7

      • C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe
        MD5

        2e2ed2b2bc917a92eb0d9bdb466da3b9

        SHA1

        f361d57f199c8a75c8e92b5ff0385e978cda0e53

        SHA256

        d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702

        SHA512

        7011c2fea9a87c19b86ce4fff579a7e73796ea9fc4474880ef0f84801f86a37b385b54cb271dc486f38ff3fd6f1727d0ac640e7155f1fa297b80e61e360fa844

      • C:\Users\Admin\AppData\Roaming\Devidisc\bcryider.exe
        MD5

        2e2ed2b2bc917a92eb0d9bdb466da3b9

        SHA1

        f361d57f199c8a75c8e92b5ff0385e978cda0e53

        SHA256

        d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702

        SHA512

        7011c2fea9a87c19b86ce4fff579a7e73796ea9fc4474880ef0f84801f86a37b385b54cb271dc486f38ff3fd6f1727d0ac640e7155f1fa297b80e61e360fa844

      • \Users\Admin\AppData\Roaming\Devidisc\bcryider.exe
        MD5

        2e2ed2b2bc917a92eb0d9bdb466da3b9

        SHA1

        f361d57f199c8a75c8e92b5ff0385e978cda0e53

        SHA256

        d0c6a4b3d920ff9efb4150c7b59de59497baf32f6c92ffd570a5406633665702

        SHA512

        7011c2fea9a87c19b86ce4fff579a7e73796ea9fc4474880ef0f84801f86a37b385b54cb271dc486f38ff3fd6f1727d0ac640e7155f1fa297b80e61e360fa844

      • memory/604-7-0x0000000000000000-mapping.dmp
      • memory/604-9-0x000007FFFFFDD000-mapping.dmp
      • memory/604-10-0x00000000003F0000-0x0000000000425000-memory.dmp
        Filesize

        212KB

      • memory/604-11-0x0000000001FD0000-0x000000000205F000-memory.dmp
        Filesize

        572KB

      • memory/660-13-0x0000000000000000-mapping.dmp
      • memory/1076-15-0x0000000000000000-mapping.dmp
      • memory/1428-0-0x0000000000000000-mapping.dmp
      • memory/1532-12-0x000007FEF6680000-0x000007FEF68FA000-memory.dmp
        Filesize

        2.5MB

      • memory/1916-14-0x0000000000000000-mapping.dmp
      • memory/1980-8-0x0000000000480000-0x000000000050F000-memory.dmp
        Filesize

        572KB

      • memory/1980-5-0x0000000000000000-mapping.dmp
      • memory/1996-2-0x0000000000000000-mapping.dmp