Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    16/06/2022, 09:42

General

  • Target

    PI.exe

  • Size

    696KB

  • MD5

    ef9ddc4ebd697d61db488c560d2115e9

  • SHA1

    a60fa983cf0a54caa2001f86bac961bba4e4ecc6

  • SHA256

    ce60e4de64afb14f5f5db72f72dcb978930c13b743f093bc8562468c7680d9ee

  • SHA512

    c2564963ca294f5b6ccccc9ae1ae7c325cc981d0b225345b6aab72e1bb100f96606a46fab18f488d3d8eac98a814960c61f3d64986e9a422d3e2c7d6f7667aa9

Malware Config

Extracted

Family

xloader

Version

2.8

Campaign

k59h

Decoy

5Jmm72a3503V

N0yBoUCYUTRLfak=

211XjgQWec5Yk5Qo6SgqZGwU

1mxV5ax97shdmbA=

StuJphyppWyplnyrgD58/HNwVc4=

O2q6/rr5gcviVU/h

ataW27/QPlPRgNMvtQ==

ut6GGNcWyhBDDDQ1Db4=

93Rc7LJ6gUek2lG3djp7wg==

8wdHfz6ABUqJsUVbyLDW3Z08hA==

7nAdOLREOQFLfrv8ae4st8yEG1gjpCJs

HD53nVq5W+8zKjeAnUDT

udw2urI9JTRLfak=

eeyly1z1Ko4FGA==

VWym0IGvHmXECZ+AnUDT

Oez2q42RI520scgnuVUxpmA=

bZM6QYi3503V

kkZvoEkVm+eTBw==

HDJld+XLDUGV0YXCdjp7wg==

gW7mk4AU31LHCZ+AnUDT

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Xloader Payload 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Users\Admin\AppData\Local\Temp\PI.exe
      "C:\Users\Admin\AppData\Local\Temp\PI.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:548
      • C:\Users\Admin\AppData\Local\Temp\PI.exe
        "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        3⤵
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:2016
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\SysWOW64\explorer.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1896
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        3⤵
        • Deletes itself
        PID:576

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/548-55-0x0000000075D21000-0x0000000075D23000-memory.dmp

          Filesize

          8KB

        • memory/548-56-0x00000000004C0000-0x00000000004CA000-memory.dmp

          Filesize

          40KB

        • memory/548-57-0x0000000005840000-0x00000000058E2000-memory.dmp

          Filesize

          648KB

        • memory/548-58-0x00000000058E0000-0x000000000594C000-memory.dmp

          Filesize

          432KB

        • memory/548-54-0x00000000000F0000-0x00000000001A4000-memory.dmp

          Filesize

          720KB

        • memory/1380-77-0x0000000006FE0000-0x0000000007143000-memory.dmp

          Filesize

          1.4MB

        • memory/1380-67-0x0000000006E40000-0x0000000006FDF000-memory.dmp

          Filesize

          1.6MB

        • memory/1380-79-0x0000000006FE0000-0x0000000007143000-memory.dmp

          Filesize

          1.4MB

        • memory/1896-78-0x00000000000D0000-0x00000000000FC000-memory.dmp

          Filesize

          176KB

        • memory/1896-73-0x0000000000410000-0x0000000000691000-memory.dmp

          Filesize

          2.5MB

        • memory/1896-76-0x00000000021D0000-0x0000000002260000-memory.dmp

          Filesize

          576KB

        • memory/1896-75-0x00000000022B0000-0x00000000025B3000-memory.dmp

          Filesize

          3.0MB

        • memory/1896-74-0x00000000000D0000-0x00000000000FC000-memory.dmp

          Filesize

          176KB

        • memory/1896-71-0x0000000075131000-0x0000000075133000-memory.dmp

          Filesize

          8KB

        • memory/2016-59-0x0000000000400000-0x000000000042C000-memory.dmp

          Filesize

          176KB

        • memory/2016-69-0x0000000000400000-0x000000000042C000-memory.dmp

          Filesize

          176KB

        • memory/2016-66-0x0000000000240000-0x0000000000251000-memory.dmp

          Filesize

          68KB

        • memory/2016-65-0x0000000000AA0000-0x0000000000DA3000-memory.dmp

          Filesize

          3.0MB

        • memory/2016-62-0x0000000000400000-0x000000000042C000-memory.dmp

          Filesize

          176KB

        • memory/2016-60-0x0000000000400000-0x000000000042C000-memory.dmp

          Filesize

          176KB