Resubmissions

29-10-2020 16:21

201029-sfamlcy2aj 10

29-10-2020 16:15

201029-jk9vy2x46s 10

29-10-2020 15:23

201029-3eee5a1gls 1

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
    1⤵
      PID:1216
      • C:\Users\Admin\AppData\Local\Temp\ebook_29.10.20.exe
        "C:\Users\Admin\AppData\Local\Temp\ebook_29.10.20.exe"
        2⤵
        • 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
        2⤵
        • 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
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1380
          • C:\Windows\SysWOW64\ipconfig.exe
            ipconfig /all
            4⤵
            • Modifies service
            • Gathers network information
            PID:1744
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /c net config workstation
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2020
          • C:\Windows\SysWOW64\net.exe
            net config workstation
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1884
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 config workstation
              5⤵
                PID:2000
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c net view /all
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:604
            • C:\Windows\SysWOW64\net.exe
              net view /all
              4⤵
              • Discovers systems in the same network
              PID:1344
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c net view /all /domain
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1832
            • C:\Windows\SysWOW64\net.exe
              net view /all /domain
              4⤵
              • Discovers systems in the same network
              PID:1656

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Command-Line Interface

      1
      T1059

      Persistence

      Modify Existing Service

      1
      T1031

      Defense Evasion

      Modify Registry

      1
      T1112

      Credential Access

      Credentials in Files

      2
      T1081

      Discovery

      Remote System Discovery

      1
      T1018

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      2
      T1005

      Replay Monitor

      Loading Replay Monitor...

      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
        Filesize

        68KB

      • memory/1032-2-0x0000000001F20000-0x0000000001F31000-memory.dmp
        Filesize

        68KB

      • memory/1032-0-0x000000000030B000-0x000000000030C000-memory.dmp
        Filesize

        4KB

      • memory/1344-17-0x0000000000000000-mapping.dmp
      • memory/1380-11-0x0000000000000000-mapping.dmp
      • memory/1484-10-0x000007FEF71F0000-0x000007FEF746A000-memory.dmp
        Filesize

        2.5MB

      • memory/1544-5-0x0000000000090000-0x00000000000B8000-memory.dmp
        Filesize

        160KB

      • memory/1544-8-0x0000000000000000-mapping.dmp
      • memory/1544-7-0x0000000000090000-0x00000000000B8000-memory.dmp
        Filesize

        160KB

      • memory/1544-6-0x00000000000C0000-0x00000000000C1000-memory.dmp
        Filesize

        4KB

      • memory/1544-20-0x00000000055C0000-0x000000000579B000-memory.dmp
        Filesize

        1.9MB

      • 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