Analysis

  • max time kernel
    186s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-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 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 38 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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:796
    • 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:4376
      • 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:5064
    • C:\Windows\SysWOW64\colorcpl.exe
      "C:\Windows\SysWOW64\colorcpl.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3484
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        3⤵
          PID:224

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/796-152-0x0000000008970000-0x0000000008AC8000-memory.dmp

            Filesize

            1.3MB

          • memory/796-150-0x0000000008970000-0x0000000008AC8000-memory.dmp

            Filesize

            1.3MB

          • memory/796-148-0x0000000002CB0000-0x0000000002E0C000-memory.dmp

            Filesize

            1.4MB

          • memory/796-141-0x0000000002CB0000-0x0000000002E0C000-memory.dmp

            Filesize

            1.4MB

          • memory/3484-151-0x0000000000840000-0x000000000086C000-memory.dmp

            Filesize

            176KB

          • memory/3484-149-0x0000000002620000-0x00000000026B0000-memory.dmp

            Filesize

            576KB

          • memory/3484-146-0x0000000002800000-0x0000000002B4A000-memory.dmp

            Filesize

            3.3MB

          • memory/3484-145-0x0000000000840000-0x000000000086C000-memory.dmp

            Filesize

            176KB

          • memory/3484-144-0x0000000000050000-0x0000000000069000-memory.dmp

            Filesize

            100KB

          • memory/4376-135-0x0000000008090000-0x000000000812C000-memory.dmp

            Filesize

            624KB

          • memory/4376-130-0x00000000006D0000-0x0000000000784000-memory.dmp

            Filesize

            720KB

          • memory/4376-134-0x00000000052C0000-0x00000000052CA000-memory.dmp

            Filesize

            40KB

          • memory/4376-133-0x0000000005300000-0x00000000053AA000-memory.dmp

            Filesize

            680KB

          • memory/4376-132-0x00000000051B0000-0x0000000005242000-memory.dmp

            Filesize

            584KB

          • memory/4376-131-0x00000000056C0000-0x0000000005C64000-memory.dmp

            Filesize

            5.6MB

          • memory/5064-143-0x0000000000400000-0x000000000042C000-memory.dmp

            Filesize

            176KB

          • memory/5064-140-0x0000000001420000-0x0000000001431000-memory.dmp

            Filesize

            68KB

          • memory/5064-139-0x00000000010B0000-0x00000000013FA000-memory.dmp

            Filesize

            3.3MB

          • memory/5064-137-0x0000000000400000-0x000000000042C000-memory.dmp

            Filesize

            176KB