Resubmissions

18/03/2023, 01:01

230318-bddmjsaf776

17/03/2023, 23:06

230317-23cpnacd5t8

Analysis

  • max time kernel
    903s
  • max time network
    906s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    18/03/2023, 01:01

General

  • Target
    Documents-invoice-plan_032023.exe
  • Size 1.5MB
  • Sample230318-bddmjsaf77
  • SHA256 7572b5b6b1f0ea8e857de568898cf97139c4e5237b835c61fea7d91a6f1155fb
  • MD5 SHA1 SHA512 SSDEEP
Score
6/10

Malware Config

Signatures

  • 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
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Documents-invoice-plan_032023.exe
    "C:\Users\Admin\AppData\Local\Temp\Documents-invoice-plan_032023.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Users\Admin\AppData\Local\Temp\Documents-invoice-plan_032023.exe
      "C:\Users\Admin\AppData\Local\Temp\Documents-invoice-plan_032023.exe"
      2⤵
      • Modifies system certificate store
      • Suspicious use of WriteProcessMemory
      PID:1984
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c tzutil /g
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:308
        • C:\Windows\SysWOW64\tzutil.exe
          tzutil /g
          4⤵
            PID:892

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
          • Size 61KB
          • SHA256 95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72
          • MD5 SHA1 SHA512 SSDEEP

          94308059B57B3142E455B38A6EB92015

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
          • Size 304B
          • SHA256 0e33b6ef439202ba29ecc9817cea250fb068f77a6ac998a63fd6f3baf5fe1c88
          • MD5 SHA1 SHA512

          Cab3F64.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Cab3F64.tmp
          • Size 61KB
          • SHA256 10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b
          • MD5 SHA1 SHA512 SSDEEP

          Tar414E.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Tar414E.tmp
          • Size 161KB
          • SHA256 1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd
          • MD5 SHA1 SHA512 SSDEEP

          memory/1984-55-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          memory/1984-56-0x0000000000400000-0x0000000000545000-memory.dmp

          memory/1984-59-0x0000000000400000-0x0000000000545000-memory.dmp

          memory/1984-60-0x0000000000400000-0x0000000000545000-memory.dmp

          memory/1984-150-0x0000000000400000-0x0000000000545000-memory.dmp

          memory/2000-58-0x0000000004380000-0x00000000044BD000-memory.dmp