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Overview

overview

10

Static

static

10

RunTimeBroker.exe

windows7-x64

10

RunTimeBroker.exe

windows10-2004-x64

10

Resubmissions

28/06/2024, 23:46

240628-3sddwavhjc 10

28/06/2024, 14:25

240628-rrsavsthne 10

Analysis

  • max time kernel
    148s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/06/2024, 23:46

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General

  • Target

    RunTimeBroker.exe

  • Size

    39KB

  • MD5

    0061dd18de7cfdd840fbce10433e8d73

  • SHA1

    9852fe23c191a11a387a7f7a7744c15b1d7d601a

  • SHA256

    06ebe0fa2a8df8fe5a51879b6e4a81292bd36668e619666f94db94641666abd9

  • SHA512

    4687b8357ef603dfbefd0661d103a454d7d1dc3448526d6e9d21823a2d60b485cea307eedf846dd695bc2009534abd1081461d03f39729dc9c642478a6d87411

  • SSDEEP

    768:N2CSKPu9Wkh6A9C96eutXwwTSmvAFU9OLj6SOMhNL575A:EVK6WgMs2moFU9Yj6SOM/pi

Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

rTw9cIeh9w3su4g8

Attributes
  • Install_directory

    %AppData%

  • install_file

    Dllhost.exe

  • pastebin_url

    https://pastebin.com/raw/pw1j2xqz

aes.plain

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    execution
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 48 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RunTimeBroker.exe
    "C:\Users\Admin\AppData\Local\Temp\RunTimeBroker.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\RunTimeBroker.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:880
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RunTimeBroker.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4968
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Dllhost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2812
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Dllhost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3576

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    944B

    MD5

    6d3e9c29fe44e90aae6ed30ccf799ca8

    SHA1

    c7974ef72264bbdf13a2793ccf1aed11bc565dce

    SHA256

    2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

    SHA512

    60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    944B

    MD5

    eb1ad317bd25b55b2bbdce8a28a74a94

    SHA1

    98a3978be4d10d62e7411946474579ee5bdc5ea6

    SHA256

    9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

    SHA512

    d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_branp2l1.51r.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    Download Submit

  • memory/560-0-0x00007FF917AA3000-0x00007FF917AA5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/560-1-0x0000000000800000-0x0000000000810000-memory.dmp

    Filesize

    64KB

    Download

  • memory/560-54-0x00007FF917AA3000-0x00007FF917AA5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/880-12-0x00007FF917AA0000-0x00007FF918561000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/880-13-0x00007FF917AA0000-0x00007FF918561000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/880-14-0x00007FF917AA0000-0x00007FF918561000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/880-15-0x00007FF917AA0000-0x00007FF918561000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/880-18-0x00007FF917AA0000-0x00007FF918561000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/880-7-0x0000026CEA780000-0x0000026CEA7A2000-memory.dmp

    Filesize

    136KB

    Download