Analysis

  • max time kernel
    153s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    01-12-2021 12:57

General

  • Target

    core.bat

  • Size

    184B

  • MD5

    3d8324a955312a7ffcb44b35919f59c7

  • SHA1

    9fd77adcf0405680c06963c576e192c58561ca5d

  • SHA256

    743953ecd93245846c2c8b44b9d6c7c5a7a98cba40631102ed5f77d9189df934

  • SHA512

    deb56530f203f064e7b8c65ae361185d1c734ba3d542f9e47f33224898e6426c918bf860951f4c6c6a51c56ebf328e7b1067ee9494d97e189ee2adc5890c6fbe

Malware Config

Extracted

Family

icedid

rsa_pubkey.plain

Extracted

Family

icedid

Botnet

1892568649

C2

baeswea.com

bersaww.com

Attributes
  • auth_var

    10

  • url_path

    /news/

Signatures

  • IcedID, BokBot

    IcedID is a banking trojan capable of stealing credentials.

  • Blocklisted process makes network request 5 IoCs
  • Downloads MZ/PE file
  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Discovers systems in the same network 1 TTPs 2 IoCs
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Modifies registry class 2 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\core.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:756
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\excuse64.dat,DllMain /i="license.dat"
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1120
      • C:\Windows\system32\cmd.exe
        cmd.exe /c chcp >&2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1084
        • C:\Windows\system32\chcp.com
          chcp
          4⤵
            PID:304
        • C:\Windows\System32\Wbem\WMIC.exe
          WMIC /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get * /Format:List
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1832
        • C:\Windows\system32\ipconfig.exe
          ipconfig /all
          3⤵
          • Gathers network information
          PID:1612
        • C:\Windows\system32\systeminfo.exe
          systeminfo
          3⤵
          • Gathers system information
          PID:804
        • C:\Windows\system32\net.exe
          net config workstation
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1328
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 config workstation
            4⤵
              PID:1900
          • C:\Windows\system32\nltest.exe
            nltest /domain_trusts
            3⤵
              PID:2008
            • C:\Windows\system32\nltest.exe
              nltest /domain_trusts /all_trusts
              3⤵
                PID:972
              • C:\Windows\system32\net.exe
                net view /all /domain
                3⤵
                • Discovers systems in the same network
                PID:964
              • C:\Windows\system32\net.exe
                net view /all
                3⤵
                • Discovers systems in the same network
                PID:1176
              • C:\Windows\system32\net.exe
                net group "Domain Admins" /domain
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1016
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 group "Domain Admins" /domain
                  4⤵
                    PID:1992

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Roaming\license.dat

              MD5

              c7c45636ca690acdab7fba1e9d126f8b

              SHA1

              61376304cd90786813a80680a92cef03fedb6484

              SHA256

              cfc202b44509f2f607d365858a8218dfdc6b26f8087efcc5e46f4fef9ab53705

              SHA512

              9e6c7df9f70017b9eeb5868a358bc9eaf50de65dad04640220f380ff72e80bc303f034cb62929abb0c35d951b751732a131ae828c4c01cd1826610423f784db8

            • \??\PIPE\NETLOGON

              MD5

              d41d8cd98f00b204e9800998ecf8427e

              SHA1

              da39a3ee5e6b4b0d3255bfef95601890afd80709

              SHA256

              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

              SHA512

              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

            • \Users\Admin\AppData\Local\Temp\sqlite64.dll

              MD5

              26d773a69f6fad3200d49a7aaa77752b

              SHA1

              3970ffe8aefe0c30daaec65b85fb103c0fc0f2a7

              SHA256

              fca6b7fe66ad9973f18f407e83b56dacd04197cbd35efc498a342d73d6a113e5

              SHA512

              0041b52514460dda19dd065fc46393f6fbe248a4c62fce28e0819abd952756996b34fdea286eb7814a7c868a12656a065278932760e61e53f7102b0dba324e4f

            • memory/304-61-0x0000000000000000-mapping.dmp

            • memory/804-64-0x0000000000000000-mapping.dmp

            • memory/964-71-0x0000000000000000-mapping.dmp

            • memory/972-69-0x0000000000000000-mapping.dmp

            • memory/1016-73-0x0000000000000000-mapping.dmp

            • memory/1084-60-0x0000000000000000-mapping.dmp

            • memory/1120-59-0x000007FEFC4B1000-0x000007FEFC4B3000-memory.dmp

              Filesize

              8KB

            • memory/1120-55-0x0000000000000000-mapping.dmp

            • memory/1120-58-0x00000000001B0000-0x00000000001E7000-memory.dmp

              Filesize

              220KB

            • memory/1120-57-0x00000000001F0000-0x0000000000249000-memory.dmp

              Filesize

              356KB

            • memory/1176-72-0x0000000000000000-mapping.dmp

            • memory/1328-66-0x0000000000000000-mapping.dmp

            • memory/1612-63-0x0000000000000000-mapping.dmp

            • memory/1832-62-0x0000000000000000-mapping.dmp

            • memory/1900-67-0x0000000000000000-mapping.dmp

            • memory/1992-74-0x0000000000000000-mapping.dmp

            • memory/2008-68-0x0000000000000000-mapping.dmp