Overview

overview

10

Static

static

8

prescribe -05.21.doc

windows7_x64

10

prescribe -05.21.doc

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    07-05-2021 08:58

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General

  • Target

    prescribe -05.21.doc

  • Size

    79KB

  • MD5

    f783dd95bc127688cb406fe0d5d01ff0

  • SHA1

    45ca3a0c157b8b2a38d5b20f1dd6963bb5d36a64

  • SHA256

    e3ca77e541cc28d492ff279b51d97a81a1f46a73aac808e3b7f5d4952850e3d0

  • SHA512

    c6dc3e33103f569a42c0f9033c099253fa94bf7570fed0d54b4d829486e72d8adb9cffb397dd33506ad98f30471ec6d31135efaa29bc9c147921b19ca7caf12d

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 21 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\prescribe -05.21.doc" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4044
    • C:\Windows\explorer.exe
      explorer c:\users\public\funcLib.hta
      2⤵
      • Process spawned unexpected child process
      PID:2352
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Public\funcLib.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
        PID:508
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 508 -s 1324
          3⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2024

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Public\funcLib.hta
      MD5

      51902bd49c27e0c3b93378b27f8083dc

      SHA1

      6de5d6753e9eaadea243087879b0bf2f615f98cf

      SHA256

      d5dd98b67ef723bd5f5ca4a6f1e4f165ba26a3f2b2dc216c259496889e525b6b

      SHA512

      54474de1308b9e92e634ba73a3eddbbdac9130a716c911699dc3282a19a81303e3e2047064e195b21ee95dea19bba6e646784be2057da42dcfede60752985740

      Download Submit
    • memory/508-182-0x0000000000000000-mapping.dmp
      Download
    • memory/2352-180-0x0000000000000000-mapping.dmp
      Download
    • memory/4044-114-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp
      Filesize

      64KB

      Download
    • memory/4044-115-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp
      Filesize

      64KB

      Download
    • memory/4044-116-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp
      Filesize

      64KB

      Download
    • memory/4044-117-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp
      Filesize

      64KB

      Download
    • memory/4044-119-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp
      Filesize

      64KB

      Download
    • memory/4044-118-0x00007FFB7D9B0000-0x00007FFB804D3000-memory.dmp
      Filesize

      43.1MB

      Download
    • memory/4044-122-0x00007FFB766E0000-0x00007FFB777CE000-memory.dmp
      Filesize

      16.9MB

      Download
    • memory/4044-123-0x00007FFB747E0000-0x00007FFB766D5000-memory.dmp
      Filesize

      31.0MB

      Download
    • memory/4044-179-0x00000192E80E0000-0x00000192E80E4000-memory.dmp
      Filesize

      16KB

      Download