Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    18-02-2022 15:18

General

  • Target

    LETTER OF INTENT.exe

  • Size

    750KB

  • MD5

    b3f43a58149d9058f8c39455869c2f84

  • SHA1

    8f3d20b2f71e7331c355e2926a5fc5ce71e72eb8

  • SHA256

    a04a4acf00f50f8b3c3bea38914813aa75ce4ba8c30c08971a6094c492d0d41d

  • SHA512

    4aa74fa83551e3c2318f488cf2dbd0741e9b42899ad8501c0bf9d0e2c6471fee6ad0c1588ea652195de1ef813e51bc2bb03628cf5609792e7e59e1baa56b3fef

Score
10/10

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

uar3

Decoy

jogoreviravolta.com

keysine.com

sami60.com

morganators.com

referral.directory

campdiscount.info

vanwah.com

jmtmjz.com

der-transformationscode.com

evangelvalormedia.com

bedsidehomecare.com

novaair.net

privilegetroissecurity.com

elsiepupz.com

yy77kk.com

nt-renewable.com

alyaqoutalabyadhautoparts.com

start-play-now.com

myskew.com

himalaya-finance.com

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • Xloader Payload 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 3 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies data under HKEY_USERS 51 IoCs
  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Users\Admin\AppData\Local\Temp\LETTER OF INTENT.exe
      "C:\Users\Admin\AppData\Local\Temp\LETTER OF INTENT.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3984
      • C:\Users\Admin\AppData\Local\Temp\LETTER OF INTENT.exe
        "C:\Users\Admin\AppData\Local\Temp\LETTER OF INTENT.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        PID:1748
    • C:\Windows\SysWOW64\mstsc.exe
      "C:\Windows\SysWOW64\mstsc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\LETTER OF INTENT.exe"
        3⤵
          PID:3248
    • C:\Windows\system32\MusNotifyIcon.exe
      %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
      1⤵
      • Checks processor information in registry
      PID:3704
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k NetworkService -p
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:3424
    • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
      C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
      1⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:1908

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1204-144-0x0000000004B10000-0x0000000004BA0000-memory.dmp
      Filesize

      576KB

    • memory/1204-143-0x0000000004BC0000-0x0000000004F0A000-memory.dmp
      Filesize

      3.3MB

    • memory/1204-142-0x0000000000950000-0x0000000000979000-memory.dmp
      Filesize

      164KB

    • memory/1204-141-0x0000000000DE0000-0x0000000000F1A000-memory.dmp
      Filesize

      1.2MB

    • memory/1748-139-0x00000000017A0000-0x00000000017B1000-memory.dmp
      Filesize

      68KB

    • memory/1748-135-0x0000000000400000-0x0000000000429000-memory.dmp
      Filesize

      164KB

    • memory/1748-138-0x000000000041D000-0x000000000041E000-memory.dmp
      Filesize

      4KB

    • memory/1748-137-0x00000000017F0000-0x0000000001B3A000-memory.dmp
      Filesize

      3.3MB

    • memory/2440-140-0x0000000002C00000-0x0000000002CB8000-memory.dmp
      Filesize

      736KB

    • memory/2440-145-0x00000000080D0000-0x0000000008218000-memory.dmp
      Filesize

      1.3MB

    • memory/3984-130-0x00000000748FE000-0x00000000748FF000-memory.dmp
      Filesize

      4KB

    • memory/3984-134-0x0000000005180000-0x000000000521C000-memory.dmp
      Filesize

      624KB

    • memory/3984-133-0x0000000004E40000-0x0000000004ED2000-memory.dmp
      Filesize

      584KB

    • memory/3984-132-0x0000000004BF0000-0x0000000004BF1000-memory.dmp
      Filesize

      4KB

    • memory/3984-131-0x0000000000240000-0x0000000000302000-memory.dmp
      Filesize

      776KB