Analysis

  • max time kernel
    59s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-01-2023 10:46

General

  • Target

    invoice and packing list.exe

  • Size

    863KB

  • MD5

    629650941c646616da246f363ac31b64

  • SHA1

    61c75662747d73543a4fd4ef522fa4e1d68a2123

  • SHA256

    5fd88707644b5c51752f574b44b60add5b279713e5fd1b47fe95f5cf97fa634e

  • SHA512

    f762d0d13fdaf114e6e646686e7c425c015d1cec2dc3fa2207ed51cd1c1fc8c6e16dbfd85e52ea832c16ed5aa7cdc2e23a1cf1768e7743cd116290c6d5047c67

  • SSDEEP

    24576:rVO8kyGyOMQzlG27ScBABcU9Ny6AAgZy:w8kypOMj27EcUry6Au

Malware Config

Signatures

  • Accesses Microsoft Outlook profiles ⋅ 1 TTPs 3 IoCs
  • Adds Run key to start application ⋅ 2 TTPs 1 IoCs
  • Looks up external IP address via web service ⋅ 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext ⋅ 1 IoCs
  • Enumerates physical storage devices ⋅ 1 TTPs

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

  • Creates scheduled task(s) ⋅ 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses ⋅ 3 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 3 IoCs
  • Suspicious use of SetWindowsHookEx ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 20 IoCs
  • outlook_office_path ⋅ 1 IoCs
  • outlook_win_path ⋅ 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\invoice and packing list.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice and packing list.exe"
    Suspicious use of SetThreadContext
    Suspicious behavior: EnumeratesProcesses
    Suspicious use of AdjustPrivilegeToken
    Suspicious use of WriteProcessMemory
    PID:1116
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\JZJXVF.exe"
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2008
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JZJXVF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDECC.tmp"
      Creates scheduled task(s)
      PID:1888
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      Accesses Microsoft Outlook profiles
      Adds Run key to start application
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      outlook_office_path
      outlook_win_path
      PID:1700

Network

MITRE ATT&CK Matrix

Collection

Command and Control

    Credential Access

      Defense Evasion

      Execution

        Exfiltration

          Impact

            Initial Access

              Lateral Movement

                Privilege Escalation

                  Replay Monitor

                  00:00 00:00

                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\tmpDECC.tmp
                    MD5

                    e8384c7feb63671bf3adc464e7fe8623

                    SHA1

                    48673166dac1d919647e88915c2a3d4b76bdfce1

                    SHA256

                    0c885673641f60cfc8488e8b2e9017e1c71961f2c5af592d9628f5e9636aa171

                    SHA512

                    f9b924e633108391b63183fbbdbf2cf38b374e4330935a0fff7d6e701772221002d381edb2660ef9178f54848dac8367ab74ebbe841a9a419673441598767d10

                  • memory/1116-63-0x0000000000D40000-0x0000000000D72000-memory.dmp
                  • memory/1116-55-0x0000000074FB1000-0x0000000074FB3000-memory.dmp
                  • memory/1116-56-0x0000000000890000-0x00000000008A0000-memory.dmp
                  • memory/1116-58-0x00000000053A0000-0x000000000540A000-memory.dmp
                  • memory/1116-57-0x00000000008D0000-0x00000000008DA000-memory.dmp
                  • memory/1116-54-0x0000000000FD0000-0x00000000010AE000-memory.dmp
                  • memory/1700-70-0x000000000042AB8E-mapping.dmp
                  • memory/1700-67-0x0000000000400000-0x0000000000430000-memory.dmp
                  • memory/1700-68-0x0000000000400000-0x0000000000430000-memory.dmp
                  • memory/1700-69-0x0000000000400000-0x0000000000430000-memory.dmp
                  • memory/1700-65-0x0000000000400000-0x0000000000430000-memory.dmp
                  • memory/1700-72-0x0000000000400000-0x0000000000430000-memory.dmp
                  • memory/1700-74-0x0000000000400000-0x0000000000430000-memory.dmp
                  • memory/1700-64-0x0000000000400000-0x0000000000430000-memory.dmp
                  • memory/1888-60-0x0000000000000000-mapping.dmp
                  • memory/2008-77-0x000000006E9A0000-0x000000006EF4B000-memory.dmp
                  • memory/2008-59-0x0000000000000000-mapping.dmp
                  • memory/2008-76-0x000000006E9A0000-0x000000006EF4B000-memory.dmp