Analysis

  • max time kernel
    152s
  • max time network
    156s
  • 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 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:2528
    • C:\Users\Admin\AppData\Local\Temp\PI.exe
      "C:\Users\Admin\AppData\Local\Temp\PI.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4664
      • C:\Users\Admin\AppData\Local\Temp\PI.exe
        "C:\Users\Admin\AppData\Local\Temp\PI.exe"
        3⤵
          PID:4976
        • 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:2572
      • C:\Windows\SysWOW64\chkdsk.exe
        "C:\Windows\SysWOW64\chkdsk.exe"
        2⤵
          PID:2472
        • C:\Windows\SysWOW64\wlanext.exe
          "C:\Windows\SysWOW64\wlanext.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:5068
          • C:\Windows\SysWOW64\cmd.exe
            /c del "C:\Users\Admin\AppData\Local\Temp\PI.exe"
            3⤵
              PID:4832

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • memory/2528-142-0x00000000031C0000-0x000000000327C000-memory.dmp

                Filesize

                752KB

              • memory/2528-155-0x0000000003490000-0x000000000353E000-memory.dmp

                Filesize

                696KB

              • memory/2528-156-0x0000000003490000-0x000000000353E000-memory.dmp

                Filesize

                696KB

              • memory/2528-147-0x00000000031C0000-0x000000000327C000-memory.dmp

                Filesize

                752KB

              • memory/2528-145-0x00000000088F0000-0x0000000008A3F000-memory.dmp

                Filesize

                1.3MB

              • memory/2572-143-0x0000000000400000-0x000000000042C000-memory.dmp

                Filesize

                176KB

              • memory/2572-146-0x0000000000400000-0x000000000042C000-memory.dmp

                Filesize

                176KB

              • memory/2572-138-0x0000000000400000-0x000000000042C000-memory.dmp

                Filesize

                176KB

              • memory/2572-140-0x0000000001490000-0x00000000017DA000-memory.dmp

                Filesize

                3.3MB

              • memory/2572-141-0x0000000000F40000-0x0000000000F51000-memory.dmp

                Filesize

                68KB

              • memory/2572-144-0x00000000018C0000-0x00000000018D1000-memory.dmp

                Filesize

                68KB

              • memory/4664-135-0x0000000007C90000-0x0000000007D2C000-memory.dmp

                Filesize

                624KB

              • memory/4664-134-0x0000000005300000-0x000000000530A000-memory.dmp

                Filesize

                40KB

              • memory/4664-130-0x0000000000610000-0x00000000006C4000-memory.dmp

                Filesize

                720KB

              • memory/4664-133-0x0000000005320000-0x00000000053CA000-memory.dmp

                Filesize

                680KB

              • memory/4664-132-0x0000000005120000-0x00000000051B2000-memory.dmp

                Filesize

                584KB

              • memory/4664-131-0x0000000005630000-0x0000000005BD4000-memory.dmp

                Filesize

                5.6MB

              • memory/5068-151-0x0000000000E00000-0x000000000114A000-memory.dmp

                Filesize

                3.3MB

              • memory/5068-152-0x00000000004B0000-0x00000000004DC000-memory.dmp

                Filesize

                176KB

              • memory/5068-149-0x00000000005D0000-0x00000000005E7000-memory.dmp

                Filesize

                92KB

              • memory/5068-154-0x0000000001150000-0x00000000011E0000-memory.dmp

                Filesize

                576KB

              • memory/5068-150-0x00000000004B0000-0x00000000004DC000-memory.dmp

                Filesize

                176KB