Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    03-11-2024 05:45

General

  • Target

    BootStrapperV2.exe

  • Size

    70KB

  • MD5

    869eb8101675b446f5d0494013b676ac

  • SHA1

    bcf9b9deacbb90439ad920c565191e6d31dfa565

  • SHA256

    e26cdf6b5b88b2bc91127406361c7ffc32090b454f7081dcaf11b15ed7da002c

  • SHA512

    b551dcb11423e8b5ed54ac95052548d62b3d34c74b424c8a1320cb940425d0bca92bba501c1c82a3becf452df1a624b60a18a312537e0844e7ede7898acf5ad9

  • SSDEEP

    1536:P3XvLmMO78lkuciRlikj9Vkt+3ybDjkYb91XRlpfsW26J5SJX94Xx:P3DmM08vTikDkt+CIYb9Z2qSJX94B

Malware Config

Extracted

Family

xworm

C2

where-reverse.gl.at.ply.gg:18649

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    Helper.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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.

  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BootStrapperV2.exe
    "C:\Users\Admin\AppData\Local\Temp\BootStrapperV2.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGEAcwBqACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGUAawBlACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGUAdAB3ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGIAaQBxACMAPgA="
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1212
    • C:\Windows\BootStrapper.exe
      "C:\Windows\BootStrapper.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3540
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2392

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nb2wtdfx.1ah.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Windows\BootStrapper.exe

    Filesize

    63KB

    MD5

    c0fd9d3438390b8805ee4c259f2e4515

    SHA1

    d00f9e027be92d9df954818e69605a65c72d3e67

    SHA256

    5cc211a9596ae27be5cf99949a2dc7c1953140569c83848dd5628a1799479c2f

    SHA512

    1603fbf5409a0b5037573570f0ebeaa90be38953166535e3ab51d96760577011d64bd7aeb3798f805daca971cca67b141b00b215504589f5c8ddcf112fe7c38f

  • memory/1212-33-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/1212-36-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/1212-26-0x0000017EA7C50000-0x0000017EA7C72000-memory.dmp

    Filesize

    136KB

  • memory/1212-31-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/1212-32-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/1424-1-0x0000000000140000-0x0000000000158000-memory.dmp

    Filesize

    96KB

  • memory/1424-8-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/1424-0-0x00007FFB57253000-0x00007FFB57255000-memory.dmp

    Filesize

    8KB

  • memory/1424-18-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-51-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-48-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-45-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-46-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-39-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-41-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-40-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-47-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-50-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/2392-49-0x00000241EE190000-0x00000241EE191000-memory.dmp

    Filesize

    4KB

  • memory/3540-20-0x0000000000660000-0x0000000000676000-memory.dmp

    Filesize

    88KB

  • memory/3540-19-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/3540-38-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB

  • memory/3540-37-0x00007FFB57250000-0x00007FFB57D12000-memory.dmp

    Filesize

    10.8MB