Analysis

  • max time kernel
    34s
  • max time network
    26s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 03:54

General

  • Target

    sigmasoft-0.1xw.exe

  • Size

    80KB

  • MD5

    7aba935fb8e2e973e2e15b98cda42058

  • SHA1

    5c227e7f053a883394d6162f9183c3343532a302

  • SHA256

    d1adc072119b02981f1581427259693b0e14db39e06e27daa2059259a97857d4

  • SHA512

    fd566bc99920c03a86d8a7b1b85d29ef23e48bcf686d5259d957d0921fac5de2b17c21341d77859616efde4b621037282c34f3fb3f5099337b01c17e6b8378bf

  • SSDEEP

    1536:4HZle0b+wFYoZrXbcAc8T+b6l+URVthEmrk6PocZgnWQ6OjK5PQUZ:Yg0b+wHRrcAT+boPd7OnWQ6O+20

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:42772

gorodpro-42772.portmap.host:42772

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svchost.exe

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • 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.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 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\sigmasoft-0.1xw.exe
    "C:\Users\Admin\AppData\Local\Temp\sigmasoft-0.1xw.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:1764
    • 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\sigmasoft-0.1xw.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2696
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sigmasoft-0.1xw.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2576
    • 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⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2616
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2568
    • 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:2192

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    7KB

    MD5

    2f9d23f2634a7dc1d560f019dd3bf6de

    SHA1

    5e02964464bd2bfb0137a0faf5e1011ec427c82c

    SHA256

    280d4f8adae6125caefcb7885a296a65fd3822749231b0d576b364aad8940131

    SHA512

    8ccca03164f30e8f650ad11b59a458ae44ca107f0cad251d3b1408ec92655a9ed88aa3f6bbfd69793399abcaacdfc5ac3ecca22f7b33210447227ab729986707

  • \??\PIPE\srvsvc

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/1764-0-0x000007FEF5B13000-0x000007FEF5B14000-memory.dmp

    Filesize

    4KB

  • memory/1764-1-0x0000000000AF0000-0x0000000000B0A000-memory.dmp

    Filesize

    104KB

  • memory/1764-32-0x000000001B300000-0x000000001B380000-memory.dmp

    Filesize

    512KB

  • memory/1764-33-0x000007FEF5B13000-0x000007FEF5B14000-memory.dmp

    Filesize

    4KB

  • memory/1764-34-0x000000001B300000-0x000000001B380000-memory.dmp

    Filesize

    512KB

  • memory/2576-14-0x000000001B630000-0x000000001B912000-memory.dmp

    Filesize

    2.9MB

  • memory/2576-15-0x00000000021D0000-0x00000000021D8000-memory.dmp

    Filesize

    32KB

  • memory/2696-6-0x0000000002CB0000-0x0000000002D30000-memory.dmp

    Filesize

    512KB

  • memory/2696-7-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

    Filesize

    2.9MB

  • memory/2696-8-0x0000000001C10000-0x0000000001C18000-memory.dmp

    Filesize

    32KB