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Analysis

  • max time kernel
    146s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/04/2024, 00:05

General

  • Target

    a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe

  • Size

    177KB

  • MD5

    0bebcc64ad6ab3aed9b2a5b783db1b7a

  • SHA1

    2c4f870a2c89299b638668e868fc1ece233df2df

  • SHA256

    a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b

  • SHA512

    6fb4dafe91444d348afe91eb360bd18abc745268974864ca8e99f4d64f7a5ed4eced40ec2462b9347092916ed914f0bc82a7462f436c3c0bc572d5669d82f17b

  • SSDEEP

    3072:ksYkcYIUQObxophkyWOVotM+lmsolAIrRuw+mqv9j1MWLQh:nVIabOLyG+lDAA

Malware Config

Extracted

Family

xworm

C2

uk2.localto.net:32941:443

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svchost.exe

Signatures

  • Detect Xworm Payload 4 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Detects Windows executables referencing non-Windows User-Agents 4 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe
    "C:\Users\Admin\AppData\Local\Temp\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1684
    • 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\a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2732
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2496
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:672
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1812
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
      2⤵
      • Creates scheduled task(s)
      PID:1820
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {00A28DCE-C0F2-4046-8892-CFDD5A9D05BC} S-1-5-21-3787592910-3720486031-2929222812-1000:HSNHLVYA\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2908
    • C:\ProgramData\svchost.exe
      C:\ProgramData\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2760
    • C:\ProgramData\svchost.exe
      C:\ProgramData\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\svchost.exe

    Filesize

    177KB

    MD5

    0bebcc64ad6ab3aed9b2a5b783db1b7a

    SHA1

    2c4f870a2c89299b638668e868fc1ece233df2df

    SHA256

    a7903a792f681e00d5c41c11bcb041227a13f16f4f1f5fde1bdb1722c2f7085b

    SHA512

    6fb4dafe91444d348afe91eb360bd18abc745268974864ca8e99f4d64f7a5ed4eced40ec2462b9347092916ed914f0bc82a7462f436c3c0bc572d5669d82f17b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    04e3eac1396f57eb08d70f5f28252ff5

    SHA1

    4fb520b92360152d605a54da7b37406d198840f3

    SHA256

    8a91bfa2ad0dce16905b80b93fab019c96aa96d448439f99cb465d9fea6e6ded

    SHA512

    6d0cf9b1fbb01c61a11b6dda7e820529f375d6bb7c78fd8bb1f4cfdff9952f2a912588a75b2e717a54855d9e491ddbd15e54968fd56c6050348226f19dcdd791

  • memory/672-40-0x000007FEED3D0000-0x000007FEEDD6D000-memory.dmp

    Filesize

    9.6MB

  • memory/672-34-0x000007FEED3D0000-0x000007FEEDD6D000-memory.dmp

    Filesize

    9.6MB

  • memory/672-39-0x0000000002750000-0x00000000027D0000-memory.dmp

    Filesize

    512KB

  • memory/672-38-0x0000000002750000-0x00000000027D0000-memory.dmp

    Filesize

    512KB

  • memory/672-37-0x000007FEED3D0000-0x000007FEEDD6D000-memory.dmp

    Filesize

    9.6MB

  • memory/672-36-0x0000000002750000-0x00000000027D0000-memory.dmp

    Filesize

    512KB

  • memory/1440-66-0x00000000012B0000-0x00000000012E2000-memory.dmp

    Filesize

    200KB

  • memory/1440-67-0x000007FEF4CC0000-0x000007FEF56AC000-memory.dmp

    Filesize

    9.9MB

  • memory/1440-68-0x000007FEF4CC0000-0x000007FEF56AC000-memory.dmp

    Filesize

    9.9MB

  • memory/1684-2-0x000000001B200000-0x000000001B280000-memory.dmp

    Filesize

    512KB

  • memory/1684-1-0x000007FEF4CC0000-0x000007FEF56AC000-memory.dmp

    Filesize

    9.9MB

  • memory/1684-0-0x0000000000B40000-0x0000000000B72000-memory.dmp

    Filesize

    200KB

  • memory/1684-41-0x000000001B200000-0x000000001B280000-memory.dmp

    Filesize

    512KB

  • memory/1684-35-0x000007FEF4CC0000-0x000007FEF56AC000-memory.dmp

    Filesize

    9.9MB

  • memory/1812-52-0x000007FEECA30000-0x000007FEED3CD000-memory.dmp

    Filesize

    9.6MB

  • memory/1812-47-0x000007FEECA30000-0x000007FEED3CD000-memory.dmp

    Filesize

    9.6MB

  • memory/1812-48-0x00000000021D0000-0x0000000002250000-memory.dmp

    Filesize

    512KB

  • memory/1812-49-0x000007FEECA30000-0x000007FEED3CD000-memory.dmp

    Filesize

    9.6MB

  • memory/1812-50-0x00000000021D0000-0x0000000002250000-memory.dmp

    Filesize

    512KB

  • memory/1812-51-0x00000000021D0000-0x0000000002250000-memory.dmp

    Filesize

    512KB

  • memory/2496-20-0x0000000002460000-0x0000000002468000-memory.dmp

    Filesize

    32KB

  • memory/2496-19-0x000000001B3E0000-0x000000001B6C2000-memory.dmp

    Filesize

    2.9MB

  • memory/2496-24-0x0000000002470000-0x00000000024F0000-memory.dmp

    Filesize

    512KB

  • memory/2496-27-0x000007FEECA30000-0x000007FEED3CD000-memory.dmp

    Filesize

    9.6MB

  • memory/2496-26-0x0000000002470000-0x00000000024F0000-memory.dmp

    Filesize

    512KB

  • memory/2496-25-0x0000000002470000-0x00000000024F0000-memory.dmp

    Filesize

    512KB

  • memory/2496-23-0x000007FEECA30000-0x000007FEED3CD000-memory.dmp

    Filesize

    9.6MB

  • memory/2496-22-0x0000000002470000-0x00000000024F0000-memory.dmp

    Filesize

    512KB

  • memory/2496-21-0x000007FEECA30000-0x000007FEED3CD000-memory.dmp

    Filesize

    9.6MB

  • memory/2732-7-0x000000001B3B0000-0x000000001B692000-memory.dmp

    Filesize

    2.9MB

  • memory/2732-13-0x000007FEED3D0000-0x000007FEEDD6D000-memory.dmp

    Filesize

    9.6MB

  • memory/2732-12-0x000007FEED3D0000-0x000007FEEDD6D000-memory.dmp

    Filesize

    9.6MB

  • memory/2732-11-0x0000000002880000-0x0000000002900000-memory.dmp

    Filesize

    512KB

  • memory/2732-10-0x0000000002880000-0x0000000002900000-memory.dmp

    Filesize

    512KB

  • memory/2732-9-0x000007FEED3D0000-0x000007FEEDD6D000-memory.dmp

    Filesize

    9.6MB

  • memory/2732-8-0x00000000023F0000-0x00000000023F8000-memory.dmp

    Filesize

    32KB

  • memory/2760-62-0x0000000000D30000-0x0000000000D62000-memory.dmp

    Filesize

    200KB

  • memory/2760-63-0x000007FEF4CC0000-0x000007FEF56AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2760-64-0x000007FEF4CC0000-0x000007FEF56AC000-memory.dmp

    Filesize

    9.9MB