Analysis

  • max time kernel
    600s
  • max time network
    590s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    29-10-2020 16:21

General

  • Target

    ebook_29.10.20.exe

  • Size

    310KB

  • MD5

    cd1f5e41d727816c6ca5e6c073130df4

  • SHA1

    5d9a72b2b721aa7834d3f3bb07225ce48d4bc3fb

  • SHA256

    a1297a535f5ac9ca22d8c1200098eb01e16860ef3c840457f98000ac6a5087cc

  • SHA512

    4f88ce58d61fa0eb4fc8ad2ce068a3044bcc7f205819cab5c39a998147f034869994c849ee022b487d3708d62167cc766d406e4310d301be1e51b1b1a7f3c588

Malware Config

Extracted

Family

zloader

Botnet

r1

Campaign

r1

C2

https://notsweets.net/LKhwojehDgwegSDG/gateJKjdsh.php

https://olpons.com/LKhwojehDgwegSDG/gateJKjdsh.php

https://karamelliar.org/LKhwojehDgwegSDG/gateJKjdsh.php

https://dogrunn.com/LKhwojehDgwegSDG/gateJKjdsh.php

https://azoraz.net/LKhwojehDgwegSDG/gateJKjdsh.php

rc4.plain
rsa_pubkey.plain

Signatures

  • Suspicious use of NtCreateUserProcessOtherParentProcess ⋅ 1 IoCs
  • Zloader, Terdot, DELoader, ZeusSphinx

    Zloader is a malware strain that was initially discovered back in August 2015.

  • Blacklisted process makes network request ⋅ 36 IoCs
  • Reads user/profile data of web browsers ⋅ 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting ⋅ 2 TTPs
  • Modifies service ⋅ 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext ⋅ 1 IoCs
  • Discovers systems in the same network ⋅ 1 TTPs 2 IoCs
  • Gathers network information ⋅ 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses ⋅ 9 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 3 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 45 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    PID:1216
    • C:\Users\Admin\AppData\Local\Temp\ebook_29.10.20.exe
      "C:\Users\Admin\AppData\Local\Temp\ebook_29.10.20.exe"
      Suspicious use of NtCreateUserProcessOtherParentProcess
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1032
    • C:\Windows\SysWOW64\msiexec.exe
      msiexec.exe
      Blacklisted process makes network request
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1544
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c ipconfig /all
        Suspicious use of WriteProcessMemory
        PID:1380
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /all
          Modifies service
          Gathers network information
          PID:1744
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c net config workstation
        Suspicious use of WriteProcessMemory
        PID:2020
        • C:\Windows\SysWOW64\net.exe
          net config workstation
          Suspicious use of WriteProcessMemory
          PID:1884
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 config workstation
            PID:2000
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c net view /all
        Suspicious use of WriteProcessMemory
        PID:604
        • C:\Windows\SysWOW64\net.exe
          net view /all
          Discovers systems in the same network
          PID:1344
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c net view /all /domain
        Suspicious use of WriteProcessMemory
        PID:1832
        • C:\Windows\SysWOW64\net.exe
          net view /all /domain
          Discovers systems in the same network
          PID:1656

Network

MITRE ATT&CK Matrix

Command and Control

    Credential Access

    Defense Evasion

    Exfiltration

      Impact

        Initial Access

          Lateral Movement

            Privilege Escalation

              Replay Monitor

              00:00 00:00

              Downloads

              • C:\Users\Admin\AppData\Roaming\Atepb
                MD5

                d41d8cd98f00b204e9800998ecf8427e

                SHA1

                da39a3ee5e6b4b0d3255bfef95601890afd80709

                SHA256

                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                SHA512

                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

              • memory/604-16-0x0000000000000000-mapping.dmp
              • memory/1032-1-0x0000000001F20000-0x0000000001F31000-memory.dmp
              • memory/1032-2-0x0000000001F20000-0x0000000001F31000-memory.dmp
              • memory/1032-0-0x000000000030B000-0x000000000030C000-memory.dmp
              • memory/1344-17-0x0000000000000000-mapping.dmp
              • memory/1380-11-0x0000000000000000-mapping.dmp
              • memory/1484-10-0x000007FEF71F0000-0x000007FEF746A000-memory.dmp
              • memory/1544-5-0x0000000000090000-0x00000000000B8000-memory.dmp
              • memory/1544-8-0x0000000000000000-mapping.dmp
              • memory/1544-7-0x0000000000090000-0x00000000000B8000-memory.dmp
              • memory/1544-6-0x00000000000C0000-0x00000000000C1000-memory.dmp
              • memory/1544-20-0x00000000055C0000-0x000000000579B000-memory.dmp
              • memory/1656-19-0x0000000000000000-mapping.dmp
              • memory/1744-12-0x0000000000000000-mapping.dmp
              • memory/1832-18-0x0000000000000000-mapping.dmp
              • memory/1884-14-0x0000000000000000-mapping.dmp
              • memory/2000-15-0x0000000000000000-mapping.dmp
              • memory/2020-13-0x0000000000000000-mapping.dmp