Analysis

  • max time kernel
    300s
  • max time network
    269s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    03-11-2020 12:42

General

  • Target

    wasm_003892.exe

  • Size

    291KB

  • MD5

    6d2343d950d09893a1dafda2a7b6bac7

  • SHA1

    b134043d846cb168949efba262897f0db4d67b03

  • SHA256

    4af92f08a32990d91c2628e7a196b98c8361a591ead8785a9bd9985020d9f580

  • SHA512

    48bfb460d340570965967e1b897923da81c16460ca3764bb88aac9a97faa90bce6e8a914af233f6cb417ae50f44d9ebeadb255756b7f51328480463143ad41ce

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 ⋅ 23 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 ⋅ 4 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 3 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 45 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    PID:1276
    • C:\Users\Admin\AppData\Local\Temp\wasm_003892.exe
      "C:\Users\Admin\AppData\Local\Temp\wasm_003892.exe"
      Suspicious use of NtCreateUserProcessOtherParentProcess
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1588
    • C:\Windows\SysWOW64\msiexec.exe
      msiexec.exe
      Blacklisted process makes network request
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1400
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c ipconfig /all
        Suspicious use of WriteProcessMemory
        PID:1452
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /all
          Modifies service
          Gathers network information
          PID:1564
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c net config workstation
        Suspicious use of WriteProcessMemory
        PID:1344
        • C:\Windows\SysWOW64\net.exe
          net config workstation
          Suspicious use of WriteProcessMemory
          PID:1580
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 config workstation
            PID:1308
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c net view /all
        Suspicious use of WriteProcessMemory
        PID:1952
        • C:\Windows\SysWOW64\net.exe
          net view /all
          Discovers systems in the same network
          PID:156
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c net view /all /domain
        Suspicious use of WriteProcessMemory
        PID:2032
        • C:\Windows\SysWOW64\net.exe
          net view /all /domain
          Discovers systems in the same network
          PID:1700

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\Edud
                MD5

                d41d8cd98f00b204e9800998ecf8427e

                SHA1

                da39a3ee5e6b4b0d3255bfef95601890afd80709

                SHA256

                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                SHA512

                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

              • memory/156-17-0x0000000000000000-mapping.dmp
              • memory/1308-15-0x0000000000000000-mapping.dmp
              • memory/1344-13-0x0000000000000000-mapping.dmp
              • memory/1400-5-0x00000000000D0000-0x00000000000F8000-memory.dmp
              • memory/1400-6-0x0000000000100000-0x0000000000101000-memory.dmp
              • memory/1400-7-0x00000000000D0000-0x00000000000F8000-memory.dmp
              • memory/1400-8-0x0000000000000000-mapping.dmp
              • memory/1452-11-0x0000000000000000-mapping.dmp
              • memory/1564-12-0x0000000000000000-mapping.dmp
              • memory/1580-14-0x0000000000000000-mapping.dmp
              • memory/1588-0-0x0000000002449000-0x000000000244A000-memory.dmp
              • memory/1588-2-0x0000000003EB0000-0x0000000003EC1000-memory.dmp
              • memory/1588-1-0x0000000003EB0000-0x0000000003EC1000-memory.dmp
              • memory/1596-10-0x000007FEF7C10000-0x000007FEF7E8A000-memory.dmp
              • memory/1700-19-0x0000000000000000-mapping.dmp
              • memory/1952-16-0x0000000000000000-mapping.dmp
              • memory/2032-18-0x0000000000000000-mapping.dmp