Analysis

  • max time kernel
    148s
  • max time network
    154s
  • 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 42 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:3048
    • 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:4308
      • 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:2292
    • C:\Windows\SysWOW64\msdt.exe
      "C:\Windows\SysWOW64\msdt.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2188
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        3⤵
          PID:60

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/2188-149-0x0000000002FC0000-0x0000000003050000-memory.dmp

            Filesize

            576KB

          • memory/2188-148-0x0000000001100000-0x000000000112C000-memory.dmp

            Filesize

            176KB

          • memory/2188-147-0x0000000003290000-0x00000000035DA000-memory.dmp

            Filesize

            3.3MB

          • memory/2188-144-0x0000000000260000-0x00000000002B7000-memory.dmp

            Filesize

            348KB

          • memory/2188-145-0x0000000001100000-0x000000000112C000-memory.dmp

            Filesize

            176KB

          • memory/2292-143-0x0000000000400000-0x000000000042C000-memory.dmp

            Filesize

            176KB

          • memory/2292-137-0x0000000000400000-0x000000000042C000-memory.dmp

            Filesize

            176KB

          • memory/2292-139-0x0000000001720000-0x0000000001A6A000-memory.dmp

            Filesize

            3.3MB

          • memory/2292-140-0x0000000001290000-0x00000000012A1000-memory.dmp

            Filesize

            68KB

          • memory/3048-141-0x0000000008010000-0x0000000008154000-memory.dmp

            Filesize

            1.3MB

          • memory/3048-150-0x0000000007E20000-0x0000000007F4F000-memory.dmp

            Filesize

            1.2MB

          • memory/3048-151-0x0000000007E20000-0x0000000007F4F000-memory.dmp

            Filesize

            1.2MB

          • memory/4308-130-0x0000000000030000-0x00000000000E4000-memory.dmp

            Filesize

            720KB

          • memory/4308-135-0x0000000007770000-0x000000000780C000-memory.dmp

            Filesize

            624KB

          • memory/4308-134-0x0000000004BD0000-0x0000000004BDA000-memory.dmp

            Filesize

            40KB

          • memory/4308-133-0x0000000004AA0000-0x0000000004B4A000-memory.dmp

            Filesize

            680KB

          • memory/4308-132-0x0000000004A00000-0x0000000004A92000-memory.dmp

            Filesize

            584KB

          • memory/4308-131-0x0000000004FB0000-0x0000000005554000-memory.dmp

            Filesize

            5.6MB