Analysis

  • max time kernel
    123s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/01/2022, 17:14

General

  • Target
    opra.doc.dll
  • Size 209KB
  • Sample220120-vrzxgsagg7
  • SHA256 4bbab985fdd9eee28a8a9951080d28c2b51de13ad5e42c471e9933d9b596eacc
  • MD5 SHA1 SHA512
Score
1/10

Malware Config

Signatures

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\opra.doc.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Windows\system32\cmd.exe
      cmd /c timeout 5 & "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\opra.doc.dll", #1 wD6bUqfE kO5rG7fD & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:640
      • C:\Windows\system32\timeout.exe
        timeout 5
        3⤵
        • Delays execution with timeout.exe
        PID:1188
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\opra.doc.dll", #1 wD6bUqfE kO5rG7fD
        3⤵
          PID:1368

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          memory/1600-54-0x0000000001BF0000-0x0000000001C10000-memory.dmp