Resubmissions

30-05-2024 14:51

240530-r8l56scb6z 10

30-05-2024 14:49

240530-r65vhadb99 10

Analysis

  • max time kernel
    1800s
  • max time network
    1792s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-05-2024 14:49

General

  • Target

    chrome.exe

  • Size

    183KB

  • MD5

    2b26b084c03ef96db3cda61ec42b9780

  • SHA1

    d285abb4911dbb747b8cc0fb61d90c424905d71f

  • SHA256

    21dcb388ee5eeb9ff54802794de0a765b7a4613d93dd6564694e88e48a75c798

  • SHA512

    9fff7138ce7101c78e67e2f41181876b67d76c134757c61e151af5ffbca647b6fe965d60a41666f0dabf3508e0c43f6a56126c048ffc00bfe5909221732d2271

  • SSDEEP

    3072:k0SK4dXl19I2pbXwo5MObaQ04NpVq8BxFRzaqF+o2GQJ7/JzqVfGvc:34dFI2pbgeM/gVqwlL

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

  • pastebin_url

    https://pastebin.com/raw/0hUbjRaB

  • telegram

    https://api.telegram.org/bot7166866838:AAHZkNz5kuPxP-6aLkd_O3PTozWCCuLQp-w/sendMessage?chat_id=6817832744

Signatures

  • Detect Xworm Payload 2 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 30 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 37 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 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\chrome.exe
    "C:\Users\Admin\AppData\Local\Temp\chrome.exe"
    1⤵
    • Checks computer location settings
    • 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:1492
    • 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\chrome.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2348
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'chrome.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4476
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\chrome'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4888
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'chrome'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1360
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "chrome" /tr "C:\Users\Admin\chrome"
      2⤵
      • Creates scheduled task(s)
      PID:1252
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1496
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3056
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:968
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4860
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:724
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4876
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:184
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4980
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1704
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5096
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3180
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2092
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:856
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4520
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5000
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3856
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1664
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2532
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3844
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3924
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5084
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:792
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4920
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4356
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1080
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4708
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5032
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1844
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4712
  • C:\Users\Admin\chrome
    C:\Users\Admin\chrome
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

    Filesize

    944B

    MD5

    6d3e9c29fe44e90aae6ed30ccf799ca8

    SHA1

    c7974ef72264bbdf13a2793ccf1aed11bc565dce

    SHA256

    2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

    SHA512

    60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

    Filesize

    944B

    MD5

    a7cc007980e419d553568a106210549a

    SHA1

    c03099706b75071f36c3962fcc60a22f197711e0

    SHA256

    a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

    SHA512

    b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

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

    Filesize

    944B

    MD5

    ba169f4dcbbf147fe78ef0061a95e83b

    SHA1

    92a571a6eef49fff666e0f62a3545bcd1cdcda67

    SHA256

    5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

    SHA512

    8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eh2qwpkg.jb1.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\chrome

    Filesize

    183KB

    MD5

    2b26b084c03ef96db3cda61ec42b9780

    SHA1

    d285abb4911dbb747b8cc0fb61d90c424905d71f

    SHA256

    21dcb388ee5eeb9ff54802794de0a765b7a4613d93dd6564694e88e48a75c798

    SHA512

    9fff7138ce7101c78e67e2f41181876b67d76c134757c61e151af5ffbca647b6fe965d60a41666f0dabf3508e0c43f6a56126c048ffc00bfe5909221732d2271

  • memory/1492-0-0x0000000000310000-0x0000000000344000-memory.dmp

    Filesize

    208KB

  • memory/1492-2-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1492-1-0x00007FFC9BDF3000-0x00007FFC9BDF5000-memory.dmp

    Filesize

    8KB

  • memory/1492-57-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1492-56-0x00007FFC9BDF3000-0x00007FFC9BDF5000-memory.dmp

    Filesize

    8KB

  • memory/2348-4-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2348-18-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2348-6-0x000001CF357E0000-0x000001CF35802000-memory.dmp

    Filesize

    136KB

  • memory/2348-11-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2348-3-0x00007FFC9BDF0000-0x00007FFC9C8B1000-memory.dmp

    Filesize

    10.8MB