Analysis

  • max time kernel
    1800s
  • max time network
    1805s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    14-04-2024 13:54

General

  • Target

    Ro-exec/loader-upd.exe

  • Size

    70KB

  • MD5

    573bd20fc8382d92a7ae9eae51e738e3

  • SHA1

    55006093429df791f27e91a66e5ee63a81382b28

  • SHA256

    09036ffa342f9e5bb1e31a867dcc3b60db011baba8c0d202aff1d33195cbe729

  • SHA512

    d38736acff4128d6ce9ea17ee609ca33a37ac88f2c994cf4caf7f0eb62406a8963c33531b9f3cd020974d892c2751f3a4f67ce13ed6ba6080f97c406ccbb4aca

  • SSDEEP

    1536:PmMfwrNATngx6fPLgD9vYebv2S5NiwWW6N9dOoihkAO:LCmn463UD6ebv242FzOoiSAO

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Public%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/UWpQULMP

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Executes dropped EXE 29 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 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: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\Ro-exec\loader-upd.exe
    "C:\Users\Admin\AppData\Local\Temp\Ro-exec\loader-upd.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:848
    • 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\Ro-exec\loader-upd.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4028
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'loader-upd.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4584
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\svchost.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:856
    • 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:2128
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Public\svchost.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4432
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2396
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1624
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3384
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2636
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5108
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3568
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4996
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2392
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4196
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4716
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2656
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:960
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2812
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5088
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1876
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3452
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3092
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4680
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2028
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2312
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:408
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1736
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1324
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4456
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4316
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1412
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2332
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2740
  • C:\Users\Public\svchost.exe
    C:\Users\Public\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4004

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

    627073ee3ca9676911bee35548eff2b8

    SHA1

    4c4b68c65e2cab9864b51167d710aa29ebdcff2e

    SHA256

    85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

    SHA512

    3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

    Filesize

    654B

    MD5

    2cbbb74b7da1f720b48ed31085cbd5b8

    SHA1

    79caa9a3ea8abe1b9c4326c3633da64a5f724964

    SHA256

    e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

    SHA512

    ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

    Filesize

    944B

    MD5

    6903d57eed54e89b68ebb957928d1b99

    SHA1

    fade011fbf2e4bc044d41e380cf70bd6a9f73212

    SHA256

    36cbb00b016c9f97645fb628ef72b524dfbdf6e08d626e5c837bbbb9075dcb52

    SHA512

    c192ea9810fd22de8378269235c1035aa1fe1975a53c876fe4a7acc726c020f94773c21e4e4771133f9fcedb0209f0a5324c594c1db5b28fe1b27644db4fdc9e

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

    Filesize

    944B

    MD5

    d0697ff5fb3eb27d35e690fc135f5db0

    SHA1

    e0f0a22689a15af3e11be316de1e255b5e1bbd55

    SHA256

    4f1b596e3ac426426ebd29f9f8df3a2259c967fd5bfdd37bc1a958f36619b607

    SHA512

    55f279a037f5b7a1cdb0bb938c0347a8e950fe394a43b6ad9bf21b61ad3a7acd1fda597682499c2cbfce41ad91858a550e50796293f5c04a4c785eea5c278a43

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

    Filesize

    944B

    MD5

    cef328ddb1ee8916e7a658919323edd8

    SHA1

    a676234d426917535e174f85eabe4ef8b88256a5

    SHA256

    a1b5b7ada8ebc910f20f91ada3991d3321104e9da598c958b1edac9f9aca0e90

    SHA512

    747400c20ca5b5fd1b54bc24e75e6a78f15af61df263be932d2ee7b2f34731c2de8ce03b2706954fb098c1ac36f0b761cf37e418738fa91f2a8ea78572f545cb

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eqskdneo.xi3.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Public\svchost.exe

    Filesize

    70KB

    MD5

    573bd20fc8382d92a7ae9eae51e738e3

    SHA1

    55006093429df791f27e91a66e5ee63a81382b28

    SHA256

    09036ffa342f9e5bb1e31a867dcc3b60db011baba8c0d202aff1d33195cbe729

    SHA512

    d38736acff4128d6ce9ea17ee609ca33a37ac88f2c994cf4caf7f0eb62406a8963c33531b9f3cd020974d892c2751f3a4f67ce13ed6ba6080f97c406ccbb4aca

  • memory/848-0-0x00000000008F0000-0x0000000000908000-memory.dmp

    Filesize

    96KB

  • memory/848-67-0x000000001B700000-0x000000001B710000-memory.dmp

    Filesize

    64KB

  • memory/848-66-0x000000001B700000-0x000000001B710000-memory.dmp

    Filesize

    64KB

  • memory/848-1-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/848-33-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/856-43-0x000001A275F40000-0x000001A275F50000-memory.dmp

    Filesize

    64KB

  • memory/856-45-0x000001A275F40000-0x000001A275F50000-memory.dmp

    Filesize

    64KB

  • memory/856-48-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/856-46-0x000001A275F40000-0x000001A275F50000-memory.dmp

    Filesize

    64KB

  • memory/856-42-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/960-105-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/960-106-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/1624-75-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/1624-76-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/1876-114-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/1876-115-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2028-126-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2028-127-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2128-61-0x000001FA24F50000-0x000001FA24F60000-memory.dmp

    Filesize

    64KB

  • memory/2128-51-0x000001FA24F50000-0x000001FA24F60000-memory.dmp

    Filesize

    64KB

  • memory/2128-62-0x000001FA24F50000-0x000001FA24F60000-memory.dmp

    Filesize

    64KB

  • memory/2128-64-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2128-50-0x000001FA24F50000-0x000001FA24F60000-memory.dmp

    Filesize

    64KB

  • memory/2128-49-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-94-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-93-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2396-70-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2396-72-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2636-81-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2636-82-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2656-102-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2656-103-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2812-108-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/2812-109-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3092-120-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3092-121-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3384-79-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3384-78-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3452-117-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3452-118-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3568-88-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/3568-87-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4028-16-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4028-13-0x0000016070C20000-0x0000016070C30000-memory.dmp

    Filesize

    64KB

  • memory/4028-10-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4028-2-0x0000016072B20000-0x0000016072B42000-memory.dmp

    Filesize

    136KB

  • memory/4028-12-0x0000016070C20000-0x0000016070C30000-memory.dmp

    Filesize

    64KB

  • memory/4196-97-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4196-96-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4584-19-0x0000025D7DE50000-0x0000025D7DE60000-memory.dmp

    Filesize

    64KB

  • memory/4584-30-0x0000025D7DE50000-0x0000025D7DE60000-memory.dmp

    Filesize

    64KB

  • memory/4584-32-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4584-29-0x0000025D7DE50000-0x0000025D7DE60000-memory.dmp

    Filesize

    64KB

  • memory/4584-18-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4680-123-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4680-124-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4716-100-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4716-99-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4996-90-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4996-91-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/5088-112-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/5088-111-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/5108-84-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB

  • memory/5108-85-0x00007FFE8A700000-0x00007FFE8B1C2000-memory.dmp

    Filesize

    10.8MB